Not to he communicated to anyone outside H.M. …...3883 2 3833.—Abbreviated Titles and other Abbreviations in Common Use (M. 01364/45.—5 'Jul. 1945.) The following list of abbreviations

ERA, c::- ■ ix& SO iA.F.O. 3833/45

RESTRICTED

(FOR OFFICIAL USE ONLY)

Not to he communicated to anyone outside H .M . Service

ADMIRALTY FLEET ORDERABBREVIATED TITLES AND OTHER ABBREVIATIONS

IN COMMON USE

A d m i r a l t y , S.W.l,19th July, 1945.

The following Order having been approved by My Lords Commissioners of the Admiralty is hereby promulgated for information and guidance and necessary action.

By Command of Their Lordships,

To Commanders - in - Chief, Flag Officers, Senior Naval Officers,Captains and Commanding Officers of H.M. Ships, Vessels and C.O.Craft (see A.F.O. 1628145), Superintendents or Officers in Charge of H.M. Naval Establishments, and Admiralty Overseers concerned.

N o t e :—The scale of d is tribu tion is shown in the A dm iralty F leet O rder Volume, 1941, Instructions, p a rag rap h 10.

3883 23833.—Abbreviated Titles and other Abbreviations in Common Use

(M. 01364/45.—5 'Jul. 1945.)

The following list of abbreviations has been prepared as an aid to the understanding of Naval communications, and supersedes A.F.O. 6783/44.

2. I t does not aim a t containing all abbreviations in use, and certain categories, e.g. Admiralty departments and titles, have been deliberately excluded. I t is not to be regarded as containing abbreviations authorized for use in signals on any occasion, and in view of its limitations, abbreviations used in signalling are-not restricted to those contained therein. A ttention is drawn to the desirability of not vising in signals or letters any abbreviation which is unlikely to be readily understood by the recipients.

3. Numerous abbreviations in use in the U.S. Navy have been included and are indicated, where the fact is not otherwise obvious, by the addition of U.S. in brackets.

4. Abbreviations used by British m ilitary units and formations are listed in the Field Service Pocket Book (F.S.P.B.), P art I, Pamphlet 3 (1944).

5. Abbreviations used by the Combined Operations Organization are given in C.O. Pamphlet No. 10, “ Abbreviations -and Definitions, 1944,” and in the “ Combined Operations Staff Note Book ” shortly to be issued by C.C.O.

6. Abbreviations in use for Trade'and Military Convoys are shown in C.A.F.O. 1101/45,

7. This Order does not supersede lists of abbreviations previously issued in respect of specific Naval organizations.’

8. The inclusion of an abbreviation for an establishment, organization, etc., is not to be taken as evidence th a t the establishment, etc., still exists.

Abbreviation.

A. A.A.................

A.A.I.A.A.R.M. .. As. and As. .. A.A.C.U.A. and A.E.E. A.A./S. S .B ...A.B.................A.B.C.A.B.D. A O i J i a ..a .b .o . ~rrA.B.R. A.B.S.D. A.B.T.U. .. A.B.Y. ' .. A/C.A.C..................A.C.21

A.C.B.A.C.D.A.C.G.M. .. A.C.H.Q. ..

A.C.I.

A.C.I.(C) .. ACK...............

Meaning.f Anti-aircraft.

... Azores Area.L Administrative Authority.

Allied Armies in Italy.... After action repair materials.... Alterations and Additions.... Anti-Aircraft Co-operation Unit.... Aircraft and Armament Experimental Establishment. ... Allied Anti-Submarine Survey Board.

/ Crane Ship, Auxiliary (U.S.).\ Crane Ship.

Boom Carrier.... Advanced Base Dock (U.S.).... Assistant Boom Defence Officer.... Admiralty Berthing Officer.... Amphibian Boat Reconnaissance Aircraft.... Advanced Base Sectional Dock (U.S.).... Advanced Base Torpedo Unit.... Bar Vessel.

~r3l Aircraft.

{Aircraft Carrier.Collier.

... Commodore Commanding 21st Aircraft Carrier Squadron.

... Australian Confidential Book./ Admiralty Chart Depot.

'" \ Australian Confidential Document.... Aircraft Carrier General Memoranda.

... Area Combined Headquarters, f Admiralty Convoy Instructions.

Ajjjjy j -Council Instructions.Admiral Commanding Iceland.Acknowledge (U.S.).

...-i Air tÂn

3 3833

A.C.M. ... ... Auxiliary Mine Layer (U.S.).A.C.N.B. ... ... Australian Commonwealth Navy Board.A _ „ f Area Cash Office..

.. . Admiralty Compass Observatory.A.C.O.S. ... ... Admiral Commanding Orkneys and Shetlands. A.C.P. ... ... Admiralty Civil Police.

f Asdic Control Room.A.C.R. ... ...-< Admiral Commanding Reserves.

L Aircraft Control Room.A.C.S.E.A. ... ... Air Command, South E ast Asia.. _ f Destroyer Tender, Auxiliary (U.S.).

... ... • '• ‘̂ D estroyer Depot Ship.A.D.D.L. . . . , ... Airfield Dummy Deck Landings.A.D.E. ... ... Escort Maintenance Ship.A.D.L.S. ... ... Air Despatch Letter Service.ADMTY. ... ... Admiralty.A.D.O. ... ... Air Defence Officer.A.D.P. ... ... Air Defence Position.A.D.P.(E) ... ... Assistant Director of Ports (Egypt).A.D.R. ... ... Aircraft Direction Room.A.D.S. (Med.) ... Assistant Director of Stores, Mediterranean. A.D.S.S.W.P- ... Assistant Director of Stores, South-West Pacific. . f Ammunition Ship Auxiliary (U.S.).

■" ■" \A rm am en t Store Issuing Ship.A.E.C. ... ... Armament Store Carrier.A.E.C.O. ... ... Admiralty Electrical Cable Overseer.

_ r Afrique Equatoriale Française.. ... ... Â llied Expeditionary Force.

A.E.L. ... ... Admiralty Engineering Laboratory.A.E.O. ... ... Admiralty Engineer Overseer.A.E.S. ... ... Authorized Equipment Standard (Aircraft).

("Provision Storeship, Auxiliary (U.S.).A.F............................... ■< Victualling Store Issuing Ship.

(Âsiatic Fleet (U.S.).A.F.C. ................ Victualling Store Carrier.A.F.D. ... . .. Auxiliary Floating Drydock (U.S.).A.F.E.S. ... ... Admiralty Fuel Experimental Station.A.F.H.Q.......................Allied Force Headquarters.A.F.O. ... ... Admiralty Fleet Order.A.G. ... ... . . . . Auxiliary, Miscellaneous (U.S.).A.G.A. ............... Armament Maintenance Ship.A.G.B. ... ... Local Craft Maintenance Ship.A.G.C. ... ... Amphibious Force Flagship (U.S.):A.G.E. ... ... Admiralty Gunnery Establishment.A.G.M. ............... Admiralty General Message.A.G.M/S. ... ... Minesweeping Maintenance Ship.A.G.N. ............... Base Accommodation Ship.A.G.O. ... ... Air Gunnery Officer., p, p /M o to r Torpedo Boats Tender (U.S.).

' " ' \C o asta l Force Repair Ship.A.G.P.(S) ... ... Coastal Force Maintenance Ship., „ „ f Survey Ship (Miscellaneous) (U.S.).

' ............... Aircraft General Stores.A.G.T.U.......................Admiralty Gyro Transmission Unit.A.G.W..........................Base W /T Ship.. ("Hospital Ship, Auxiliary (U.SJ.

A'±i...............................\ Hospital Ship.A.H.Q. ... ... Air Headquarters.A.H.Q.E.M. ... ... Air Headquarters Eastern Mediterranean.A.H.Q.H.F.................. Advanced Headquarters Home Forces.A.I.C. ... ... Action Information Centre.A.I.D. ... ... Aeronautical Inspection Directorate.

{Also intended for.Amphibian Imperial Forces.

A.I.F.S. ... ... Advance Instruction Flying School.

Abbreviation. Meaning.

A.I.F.a .:

(71799)

3833 4Abbreviation.

A.I.G.A.I.N.O.A.I.O.A IR ....Air El. O. ...Air E.O.Air.T.S.A.I.T.C.A .J...................A.K.A.K.A.A.K.C.A.K.H.M. ... A.K.M.A.K.N.A.K.S.

A.K.V.A.L. .................ALFNOR ...A.L.F.S.E.A.ALMED

A.L.O.

ALUSLO. ... ALUSNA. ... ALUSNOB....A.M....................A.M.b.A.M.C.A.M.C.AJd.C.O. ... A.M.D.I.A.M.O.A .M.S.A.N.'A.N.C.X.F. ... A.N.P.B. ... A.N.R.O.N. ... A.N.S.O. ...A.O...................A.O.C.A.O.F.A.O.G.A.O.R.E.A. ...A.O.R.M.E.I.A.O.S.A .P...................A.P.A.A.P.B........................A .P.c.........................A.P.D........................a :p .h ........................

A.P.L.

A.P.M.A.P.P.B.

Meaning.... Address Indicating Group.

Assistant Inspector of Naval Ordnance.

{Action Information Organisation.Assistant Inspecting Officer (Naval Stores).

... Aircraft (U.S.).

... Air Electrical Officer.

... Air Engineer Officer.

... Air Store Issuing Ship.

... Action inform ation Training Centre.

... Amenity Ship.

... Cargo Ship, Auxiliary (U.S.).

... Cargo Ship, A ttack (U.S.).

... Naval Store Carrier.

... Assistant King’s Harbour Master.

... Mine Issue Ship.

... Net Cargo Ship (U.S.).

Î General Stores Issue Ship, Auxliary (U.S.).Naval Store Issuing Ship.

Cargo Ship/Aircraft Ferry (U.S.).Air Store Issuing Ship (Aviation Supply Ship).

... Admiralty Letter.

... Jo in t Force Headquarters, Norway.

... Allied Land Forces, South East Africa.

... Amiral Méditerranée.

{Admiralty Liaison Officer.Army Liaison Officer.

Air Liaison Officer.... United States Naval Liaison Officer.•** »» »» „ Attaché.••• »» »» »> Observer.

{Admiralty Message.Large Minesweeper.

... Minesweeper (Harbour) (U.S.)

... Armed Merchant Cruiser.

... Minesweeper (Coastal) (U.S.).

... Air Maintenance Control Office.

... Admiralty Merchant Ship Defence Instructions.

... Air Ministry Order.

... Minesweeper, High Speed (U.S.).

... Net Laying Vessel (U.S.).

... Allied Naval Commander, Expeditionary Force.

... Army and Navy Petroleum Board.

... Allied Naval Squadron, South West Pacific.

... Assistant Naval Store Officer. f Oiler/Fuel Oil Tanker (U.S.).\ Tanker.

... Air Officer Commanding.

{Afrique Occidentale ï rançaise.Fast Fleet Tanker.

.. Gasolene Tanker (U.S.).

.. Air Operations Room, Eastern Area... Administrative Officer, Royal Marines, East Indies. .. Adviser on Oil Supplies.

f Transport (U.S.)." \ A i i Publication... Transport, A ttack (U.S.)... Barracks Ship/Self-propelled (U.S.)... Coastal Transport, Auxiliary (U.S.)... High Speed Destroyer Transport (U.S.)... Evacuation Transport, Auxiliary (U.S.).

{Barracks Ship (U.S.).Labour Transport (U.S.).

S.R.R.(D.) Accommodation Ship.Admiralty Photographic Library.

.. Mechanical Artillery Transport (U.S.).

.. Air Passage Priority Board.

Abbreviation.A.P.S.A.P.V.A.P.Y.

A.R..................

A.R.b.A.R.B.A.R.DA.R.D.C. ... A.R.D.G. ... A .R.E.E. ... A.R.G.A.R.H.

A.R.L.A.R.L. (L.C.) A.R.L. (L.S.)A.R.M.

A.R.O.

A.R.S.A.R.S.T.A.R.V.A.R.V.(E) ... A.R.V.(C) ... A.R.V.(M) ...

A.S...................

A/S...................A.S.A.A.S.C.B.S. ...A.S.D.A.S.D.G.A.S.E.A/S.E.E. A/S.F. (No.) (No.) A/S.F. A/S.F.D.O. ... A/S.G. (No.)... (No.) A/S. G. A.S.I.S.A.S.L.

A.S.O.A.S.O. (I) ... A.S.P.A.S.R.A/S S.F.O. ... A/S.T.C.A.S.V.A.S.W.O. ... A.S.X.A.T.A.

3833

.. Rescue Transport (U.S.).

.. Aircraft Transport, Auxiliary (U.S.).

i Transport and Aircraft Ferry (U.S.).Aircraft Transport.

Repair Ship, Auxiliary (U.S.).Allocated Reserve.Amphibian Reconnaissance.

.. Repair Ship Base (U.S.).

{Air/Sea Rescue Boat.Repair Ship, Battle Damage (U.S.).

.. Floating D ry Dock, Auxiliary (U.S.).

.. Auxiliary Repair Dock, Concrete (U.S.)... Repair Dock, Concrete (U.S.)... Admiralty Regional Electrical Engineer... Repair Ship, Internal Combustion Engines (U.S.).

SHeavy Hull Repair Ship (U.S.).Hull Repair Ship.

Admiralty Research Laboratory.Repair Ship, Landing Craft (U.S.).

.. Landing Craft Maintenance Ship.

.. Landing Ship, Maintenance Ship.

i Heavy Machinery Repair Ship (U.S.).Heavy D uty Repair Ship.

Admiralty Regional Officer.Air Radio Officer.Aircraft Recognition Officer.Salvage Vessels.

.. Salvage Craft Tender (U.S.).

.. Aircraft Repair Ship (U.S.).

.. Aircraft Engine Repair Ship.,. Aircraft Component Repair Ship.,. Aircraft Maintenance Ship.

{Admiral Superintendent.Submarine Tender Auxiliary (U.S|i.

Submarine Depot Ship.,. Anti-Submarine.

Submarine Accommodation Ship.. Admiral Superintendent, Contract Built Ships.. Seaward Defence Ship.

Assistant Superintendent of Degaussing.

{Admiralty Signal Establishment.Aircraft Stores Establishment .

. Anti-Submarine Experimental Establishment.

. Senior Officer (No.) Anti-Submarine Flotilla.

. (No.) Anti-Submarine Flotilla.

. Officer-in-Charge of A/S Fixed Detecting System.Senior Officer (No.) Anti-Submarine Group.

. (No.) Anti-Submarine Group.

. Armament Store Issuing Ship.

i Admiral (Captain) Superintendent, Alexandria.Air Sea Rescue Launch.

Armament Supply Officer.Air Signal Officer.

. Assistant Staff Officer (Intelligence).

. Admiralty Salvage Pontoon.

{Submarine Rescue Vessel, Auxiliary (U.S.). Air/Sea Rescue.

. Anti-Submarine Ship F itting Officer.

. Anti-Submarine Training Centre.

{Anti-Surface Vessel.Airborne R adar Set.

. Naval Air Stations Weekly Orders.

. X Craft Depot Ship.

{Ocean Tug Auxiliary (U.S.).Air Transport Auxiliary.

Meaning.

3833 6Abbreviation. Meaning.

A.T.B. ... ... Allied Torpedo Boats./ Airport Traffic Control (U.S.).

‘" \ A i r Training Corps.A.T.D.U. ... ... Aircraft Torpedo Development Unit.A .T.F........................... Ocean Tug, Fleet (U.S.).A.T.L. ... ... Advance Technical Leaflet (Aircraft Modification). A.T.M.C. ... ... Admiralty Transmitting Magnetic Compass.A rr. /-> / Aircraft Torpedo Office.

........................... \O cean Tug (Old) (U.S.).A.T.R. ... ... Ocean Tug, Rescue (U.S.).A.T.T.U. ... ... Air Target Towing Unit.A.T.X. ... ... Admiralty Trunk Exchange.A.U.S. ................ Army of the United States.A.V................... ... Seaplane Tender (U.S.).A.Y.C. ... ... Catapult Lighters (U.S.).A.V.D. ... ... Seaplane Tender, Destroyer, Auxiliary (U.S.). A.V.G.O. ... ... Auxiliary Vessels Gunnery Officer.A.V.P. ... ... Seaplane Tender (Small), Auxiliary (U.S.).A.V.R. ... ... Aircraft Rescue Vessel (U.S.).A. W ... Distilling Ships (U.S.).

B. B....................... ... Bomber Aircraft.B A . ... ... ... Bermuda Area.BA.B.S. ... ... Blind Approach Beam System.B.A.C. ... ... British Air Commission.B.A.D. ... ... British Admiralty Delegation.B.A.D.R. (P.C.) ... British Admiralty Delegation Representative, Pacific

Coast.BAKS. ... ... Barracks (U.S.).B.A.M. ' ... ... Large Minesweeper.B.A.M.S. ... ... Broadcasts to Allied Merchant Ships.B.A.M.S.R................... British Admiralty Maintenance and Supply Representa

tive.B.A.R. ... ... Bureau of Aeronautics Representative JU.S.).B A .R .R . ... ... Bureau of Aeronautics Resident Representative (U.S.). B.A.R.S. ... ... Salvage Vessel.B.A.T.M. ... ... British Admiralty Technical Mission.B.B. ... ... ... Battleship (U.S.).B.C.A. ... ... Biscay and Channel Area.B.C.O.P.A. ... ... British Commanding Officer, Piraeus Area.B.C.Q. ... ... Base Commander, Queensborough.B.C.S.O. ... ... British Central Scientific Office.B.D.D. ... ... Boom Defence Depot.■g j-j g f Convoy Escort Vessel.

"■ \B alloon Development Establishment.B.D.O. ... ... Boom Defence Officer.B.D.V. ... ... Boom Defence Vessel.B.D.Z. ... ... C. in C. Netherlands Navy, London.B.E.C. ... ... British Escort Craft.B.E.O. ... ... Base Engineer Officer.B.E.O.P. ... ... Basic Engine Overhaul Party.B.F.M.O. ... ... British Fleet Mail Officer.BGRAM ... ... Basegram.B.J.C.B. ... ... British Joint Communications Board.B.L.O. ... ... Bombardment Liaison Officer.B.L.P. ... ... Bombing Landplane (U.S.).B.M.D.O. ... ... Bomb and Mine Disposal Officer.B.Mr.... ... ... Beaehmaster.B.M.S.M. ... ... British Merchant Shipping Mission.BN. ... ... ... Battalion (U.S.).B.N.A. ... ... British Naval Attache.B.N.C.I.S. ... ... British Naval Commander, Ionian Islands.B.N.C.NA. ... ... British Naval Commander, Northern Aegean.B.N.L.O. ... ... British Naval Liaison Officer.B.N.L.O. (F.N.) ... „ „ „ „ to French Naval H.Q.

London.


B.N.L.O. (R.H.N.) ... „ „ „ „ (Royal Hellenic Navy),B.N.S.M.D................... Brussels Naval Signal and Radio Maintenance and

Drafting Depot.B.O.C............................ Base Officer, Chasseurs.B O I ............................ Boiler (U.S.).B .P .F ............................ British Pacific Fleet.B .P.R ........................... Bridge Plotting Room.B.P.T............................■fVosper M.T.B.

1 Battle Practice Target, r Book of Reference.

B .R ............................... J Bomber Reconnaissance Aircraft. [_ Briefing Room.

BRG.............................. Bearing (U.S.).B.R.L.O. ... British Routing Liaison Officer.B.R.O........................... British Routing Officer.B .R .R ........................... Bridge Receiving Room.(No.) B.S..................... (No.) Battle Squadron.B.S.A............................ Barents Sea Area.B.S.O............................ <f Base Supply Officer.

^C.-in-C. Netherlands Forces in the East.B .T.E ........................... British Troops in Egypt.BUAER....................... Chief of the Bureau of Aeronautics, N avy Department,

W ashington (U.S.).BUDOCKS.................. Chief of the Bureau of Yards and Docks (U.S.).BUMED....................... Chief of the Bureau of Medicine and Surgery (U.S.)'.BUORD....................... Chief of the Bureau of Ordnance (U.S.).BUPERS..................... Chief of the Bureau of Naval Personnel (U.S.).BUSANDA ... Chief of the Bureau of Supplies and Accounts (also

BUSUP) (U.S.).BUSCI.......................... British—U.S. Convoy Instructions.BUSHIPS.................... Chief of the Bureau of Ships (U.S.).BUSUP........................ Chief of the Bureau of Supplies and Accounts (also

BUSANDA) (U.S.).B.U.S.R.A................... B ritish U.S. Routing Agreement.B.Y.M.S....................... B ritish Y. Glass Minesweeper.B.Z.A. Brazilian Araa.C.................................... Freighter Aircraft.C.A................................ Heavy Cruiser (U.S.).C.A.C.F........................ Capt.-in-Command, Arakan Coastal Forces.C.A.F.A.C.................... Commander, All Forces, Aruba—Curacao (U.S.).C .A.F.O........................ Confidential Admiralty Fleet Order.C.A.M.B....................... Central Air Medical Board.CT.A.M.D.I.................... Confidential Admiralty Merchant Ship Defence

Instructions.CANMIL...................... Canadian Military Headquarters.C.A.P.S........................ Captain, Auxiliary Patrol, Scapa.CAPT. I/C ................... Captain-in-Charge.Capt. (L) ................ Captain, Alexandria.Capt. (S/m.) Captain, Submarine ^Flotilla.CARIB......................... Caribbean (U.S.).CAR1BSEAFRON.... Caribbean Sea Frontier (U.S.).CARSO ................ Staff Officer-in-Charge of Major Landing Craft Com

missioning and Reception Staff.C.A/S.E.E. ... Captain, Anti-Submarine Experimental Establishment.CA..S.U........................ Carrier Aircraft Service U nit (U.S.).C.A.S.W.O................... N aval Air Stations Confidential and Secret Weekly

Orders.C.B................................ r Confidential Book.

LLarge Cruiser (U.S.)C.B.A.L.S. ... Carrier Borne Army Liaison Section.C.B.L.O........................ Chief Bombardment Liaison Officer.C.C................................ -j 'C hief Constructor.

B attle Cruiser (U.S.).C.C.B............................ «j Combined Communications Board.

^Contraband Control Base.71799) A •*


C.C.B.P. No. Combined Communications Board, Publication No.C.C.C............................. Commonwealth Communications Council.C.C.D.U........................ Coastal Command Development U nit.C.C.F............................ Captain, Coastal Forces.C.C.F. Nore ... Captain, Coastal Forces, Nore.C.C.F.E.T.................... Captain, Coastal Forces, Eastern Theatre.C.C.M............................ Combined Cypher Machine.C.C.O............................ / Chief of Combined Operations.

\C o d e and Cypher Office.C.C.O.S......................... Combined Chiefs of Staff.C.C.S.0......................... Contraband Control Service Officer.C.C.T.C......................... Commandant, Combined Training Centre.C.C.Z............................. Canadian Coastal Zone.C.D................................ / Captain of tho Dockyard.

\ Confidential Document (R.A.F.).Cd. Ck. 0 ..................... Commissioned Cookery Officer.Cd. Ct. 0 ...................... Commissioned Catering Officer.Cd. S.O......................... Commissioned Stores Officer.Cdt................................ Naval Cadet.Cd. W.O....................... Commissioned W riter Officer.CDE. ................ Code.C.D.I............................. Cash Duties Instructions.Cdo................................ Commando.Cdo. Bde. Commando Brigade.Cdo. Gp........................ Commando Group.C.D.O.F........................ Colonie D ’Afrique Occidentale Française.Cdr................................ Commander.Cdre. ... Commodore.Cdre. E .A .................... Commodore, E ast Africa.Cdre. I.C...................... Commodore-in-Charge.Cdre. L.C.B., f Commodore Commanding Landing Craft Bases, Ports-

Portsm outh * m outh Command.Cdre. Supt................... Commodore Superintendent.Cdr. F ........................... Commander, Flying.C.D.S............................ Command Dental Surgeon.Cd. S.B......................... Commissioned Signal Boatswain.Cd. T ............................. Commissioned Telegraphist.C.E................................ Civil/Chief Engineer.C.E.A.D....................... Chief Engineer, Armaments Design.C.E.O............................ Casualty Evacuation Officer.C.Ed.O.......................... Command Education Officer.C.E.F.B.P.F. Captain, Escort Force, British Pacific Fleet.C .E.I.E ......................... Captain, E ast Indies Fleet Escorts.C.E.I.O......................... Convoy Equipment Inspection Officer.C.E.R............................ Controlling Engine Room.C.E.S.F......................... Commander, Eastern Sea Frontier (U.S.).C.E.V............................ Convoy Escort Yessol.C.F.B............................ Coastal Force Base.C .F.E............................ Commander, Coastal Forces, Eastern Mediterranean.C.F.F.T........................ Coastal Forces Fuelling Tender.C.F.M.S.O.................... Coastal Forces Material Supply Officer.C.F.M.U........................ Coastal Force Mobile Unit.C.F.O............................ Chief Fire Officer.C.F.W........................... Commander, Coastal Forces, Western Mediterranean.C.G................................*f Commanding General (U.S.) (also COMDGEN.).

\_ Coast Guard.C.G.S.F......................... Commander Gulf Sea Frontier.C.I.A.L......................... Commercial Cable Company.C.I.B.U.S..................... Communication Instructions for British Warships in

the U.S.A.C. in C.......................... Commander-in-Chief.C. in C. B .P.F. C. in C. British Pacific Fleet.C in C. C.N.A. C. in C. Canadian N orth W est Atlantic.C. in C.E.I. ... C. in C. E ast Indies Fleet.C. in C. H .F. C. in C. Home Fleet.

9 3833

CINCLANT............... C. in C. U.S. Atlantic Fleet.C. in C MED. ... C. n C. Mediterranean.C. in C. Ned. E . ... C. in C. Netherlands Forces in the East.CINCPAC ................ C. in C. U.S. Pacific Fleet.C. in C., Ply. ... C. in C. Plymouth.C. in C. Po................... C. in C. Portsmouth.C. in C'. S.A__ ... C. in C. South Atlantic.C. in C. W.A. ... C. in C. W estern Approaches.C.J.C.C. ... ... Commonwealth Jo in t Communications Committee.C.L. ... ... ... L ight Cruiser (U.S.).

/M in e Layer (U.S.).\C ontro lled Minefield.

... Controlled Mining, Automatic.Combined Munitions Assignment Board.

... Channel Mobile Balloon Barrage.

... Co-ordination of Ministry and Service Facilities.

... Coastal Minelayer (U.S.).

... Controlled Mining, Loop.

... Controlled Mining, Observation.

... Commander Moroccan Sea Frontier Force.

... Centimetre Wave.

... Canadian Naval Board, Ottawa.Canadian Naval Mission Overseas.

... Chief Naval Meteorological Officer (South Atlantic).

... Chief of Naval Operations (U.S.).

{Commanding Officer (Brit, and U.S.).Combined Operations.

Signal Communications Officer.... No. Flotilla Signal Communications Officer.... Commanding Officer, Auxiliary Patrol, Scapa.... Combined Operations Signal Communications Officer ... Coded weather analysis (U.S.).... Captain of the Fleet.... Chaplain of the Fleet.... Coastal Frontier (U.S.).... Combined Operations Headquarters.... Chief of Intelligence Staff.... Commander (U.S.).... Commandant 1st Naval District.

... Commander Anzac Force.Commander Advance Group Amphibious Forces

Atlantic F leet (U.S.).Commander Air Force Pacific Fleet (U.S.).

Cdr. Battleship Division, One (U.S.). COMBATSHIPSLANT Cdr. Battleships, A tlantic Fleet (U.S.).COMB AY ... ... Commodore, B ay of Bengal.COMBOMRON 7 ... Cdr. Bombing Squadron 7 (U.S.).COMCARDIV 6 ... Cdr. Carrier A ircraft Division 6 (U.S.). COMCARGROUP 18 Cdr. Carrier Group 18 (U.S.)COMCARIBSEAFRON Cdr. Caribbean Sea Frontier (U.S.).


Ç.M...................C.M. (A) C.M.A.B. ... C.M.B.B. ... C.M. and S.F. C.M.C.C.M. (L.) ... C.M. (O) C.M.S.F.F. ... cm/W.C.N.B. Ottawa C.N.M.O. ... C.N.M.O. (S.A.) C.N.O.

C.O...................

C.O. No.C.O.A.P.S....................C.O.C.O........................CODAN ................C.O.F............................C. of F ..........................COFRON ................C.O.H.Q.......................C.O.I.S.........................COM. ................COM.l ................COMANZAC COMADVGRAMPH-

ORLANT. COMAIRPAC. COMBATDIV. ONE.

COMCARTRANS-RONPAC.

COMCRUDIV. TWO COMCRUPAC. COMCRUSCORON 18

Cdr. Carrier Transport Squadron, U.S. Pacific Fleet.

Cdr. Cruiser Division, Two (U.S.).Cdr. Cruisers, Pacific Fleet (U.S.).Cdr. Cruiser Aircraft Squadron, 18 (U.S.).

COMCRUSCOWING 2 Cdr. Cruiser Scouting Wing, 2 (U.S.).COMDESDIV 19 COMDESFLOT 7 ... COMDESLANT ... COMDESRON, 9 ...COM DGEN................COMDGENAM-

PHORLANTCOMDGOF ...............Comdt. C.T.C.

1799)

Cdr. Destroyer Division 19 (U.S.).Cdr. Destroyer Flotilla, 7 (U.S.).Cdr. Destroyers, A tlantic Fleet (U.S.).Cdr. Destroyer Squadron, 9 (U.S.).Cmdg. General (also C.G.) (U.S.).Cmdg. General, Amphibious Force, A tlantic Fleet

(U.S.).Commanding Officer (U.S.).Commandant, Combined Training Centre.

3833 10

COMESCORTDIV.... COMEXDIV COMFIGHTRON COMGREPAT

Com. (D) W.A ... Commodore (Destroyers), Western Approaches. COMEASTSEAFRON. Cdr. Eastern Sea Frontier (U.S.).COM. 11th PH IB . ... Cdr. Eleventh Amphibious Force (U.S.).

Cdr. Escort Division (U.S.).Cdr. Experim ental Division (U.S.).Cdr. Fighting Squadron (U.S.).Cdr. Greenland Patrol (U.S.).

COMGULFSEAFRON Cdr. Gulf Sea Frontier (U.S.). COMHAWSEAFRON Cdr. Hawaiian Sea Frontier (U.S.).

Commander-in-Chief, U.S. Fleet.Cdr. Mine Division, 88 (U.S.).Cdr. Mine Squadron, 30 (U.S.).Combined Operations Material Liaison Officer. Commodore, Naval Air Stations, E ast Africa.. Commodore, Naval Air Stations (North).Cdr. U.S. Naval Forces in Europe.Cdr. U.S. Naval Forces in N.W. African Waters. Commandant Naval Operating Base.Cdr. North-Western Sea Frontier (U.S.).


COMINCH COM3NDIV 88 COM3NRON 30 ...C.O.M.L.O...................COMNAS (E.A.) ... COM.N.A.S.(N.) ... COMNAVEU COMNAVNAW ...COMNOB ...............COMNOWESTSEA-

FRON.COMNZSEAFRON.COMOBSRON.COMOROCCAN-

SEAFRON. COMPASEAFRON. COMPHIBEU. COMPHIBLANT. ... COMPHIBPAC. ... COMPHIBSUKAY... COMSERVLANT. ... COMSERVRON. ... COMSOLANT. COMSOEASTPAC.... COMSOPAC. COMSOWESTPAC. COMSUBDIV. COMSUBSPAC. ... COMSUBRON COMTORPRON ... COMTRANSDIV ... COMTRARON COMTRANSERV-

Cdr. New Zealand Sea Frontier.Cdr. Observation Squadron (U.S.).Cdr. Moroccan Sea Frontier Forces (U.S.).

Cdr. Panam a Sea Frontier (U.S.).Cdr. Amphibious Forces, Europe (U.S.).Cdr. Amphibious Force, Atlantic Fleet (U.S.). Cdr. Amphibious Force, Pacific Fleet (U.S.).Cdr. Amphibious Base, United Kingdom (U.S.). Cdr. Service Force, Atlantic F leet (U.S.).Cdr. Service Squadron (U.S.).Cdr. South Atlantic Force (U.S.).Cdr. U.S. South E ast Pacific Force.Cdr. U.S. South Pacific Corps.Cdr. U.S. South-West Pacific Force.Cdr. Submarine Division (U.S.).Cdr. Submarine Force, Pacific Fleet (U.S.).Cdr. Submarine Squadron (U.S.).Cdr. Torpedo Squadron (U.S.).Cdr. Transport Division (U.S.).Cdr. Training Squadron (U.S.).Cdr. Transport Service Force, Pacific Fleet (U.S.).

FORPAC.COMUSBASFRANCE. Cdr. United States Ports and Bases, France. COMUTRON ... Cdr. U tility Squadron (U.S.).COMTEMTHFLEET Car. 10th Fleet, Convoy and Routing (U.S.).

CANDR.COMUTWXNGCOMWESSEAFRON.c :o .n .a .s ....................C.O.N.A.S. MED. ...

Confid.C.O.N.U. .. C.O.P.C. C.O.P.P. C.O.R.D. .. Cort Div. C.O.S. C.O.S.D. C.O.S.M.D. .. C.O.S.M.O. .. C.O.S.S.E.A... C.O.W.C.O. C.O.W.U.B.

Cdr. U tility Wing (U.S.).Cdr. Western Sea Frontier (U.S.).Commanding Officer, Naval Air Station.Commanding Officer, Naval Air Sections, Mediter

ranean.Confidential.Combined Operations Naval Unit.Commanding Officer, Pacific Coast.Combined Operations Pilotage Party .Commanding Officer, Reserve Division.Escort Division (U.S.).Chiefs of Staff.Combined Operations Stores Depot.- Combined Operations Signal Maintenance Depot. Combined Operations Signal Maintenance Officer. Chief of Staff, South E ast Asia.Controlling Officer, W ar Cabinet Offices.Commanding Officer, Working-Up Base.


C.O.X.E....................... Combined Operations Experimental Establishment.C.P.A............................ Central Pacific Area.C .P.D............................ Controller Projectile Development.C.P.R.B....................... Combined Production and Resources Board.C.R.O........................... Civilian Repair Organisation, Aircraft.C.R.T............................ Captain R adar Training.C.R.T.B....................... Cdr. i/c. Rescue Tugs Training Base.CRU............................ Cruiser (U.S.).C.S................................. Captain Superintendent.(No.) C.S...................... (No.) Cruiser Squadron.C.S. (No.) ................ Flag Officer Commanding (No.) Cruiser Squadron.

'Consular Shipping Adviser.C.S.A. ... ... *1_ Chloro-sulphonic acid.C.S.A.D........................ Chief Superintendent Armament Design.C.S.A.D.R.D.E. Chief Superintendent Aircraft Defence, Research, and

Development Establishment.C.S.A.R........................ Chief Superintendent of Armament Research.C.S.A.S.E..................... Capt. Superintendent, Admiralty Signal Establishment.C.S.H.S........................ Chief Superintendent of Hydrographic Supplies.C.S.M............................ Commodore Superintendent, Malta.C.S.N............................ Compassionate Service Naval.C.S.O............................ Chief Staff Officer.C.S.O.L.S..................... Chief Staff Officer, Landing Ships, to R.A.L.S.C.U.C.S.P.D.E.................... Chief Superintendent, Projectile Development E stab

lishment.C.S.S............................. Captain, Signal School.C.S.T.E........................ Cable Ship Training Establishment.C.S.V.O........................ Chief Salvage Officer.C.Sy.O. Command Supply Officer.C.T.C............................ Combined Training Centre.C.T.C.H.Q.................... Civilian Technical Corps Headquarters.C.T.F............................ Commander Task Force (U.S.).C.T.G............................ Commander Task Group (U.S.).C.T.U............................ Commander Task U nit (U.S.).C.T.O............................ Central Telegraph Office.CUS.............................. Course (U.S.).CUT. ................ Cutter (U.S.).c.v.......................... Aircraft Carrier, (U.S.).c .v .B ........................... Aircraft Carrier, Large (U.S.).C.V.E........................... A ircraft Carrier, Escort (U.S.).C.V.L. Aircraft Carrier, Small (U.S.).C. and W. ... Cable and Wireless Company.C. or W. Cable or Wireless.C.X.O........................... Chief Examination Officer.C.Z................................ Canal Zone (Panama) (U.S.).C.Z.M........................... F.O. i/c Royal Norwegian Navy.C.Z.T............................ Civil Zone Time.D ................................... Deferred.D. (No.) ................

ICaptain D. (No.) Destroyer Flotilla.

f D istributing Authority.D.A............................... ■< Disturbance Allowance.

[D irect Action (Bomb Fuze).D .A .E .I........................ D istributing Authority, E ast Indies Fleet.D.A.E.M...................... D istributing Authority, E astern Mediterranean.D.A.E. ( W ) ............... Director of Air Equipm ent (Washington).D .A .R .D .(I)... D irector of Admiralty Research and Development

(India).D.A.S.O....................... Deputy Armament Supply Officer.D.A.S.R.S. Director of Air Sea Rescue Service.D .B ............................... Dive Bomber Aircraft.D.B.S............................ Distressed British Seaman.

("Damage Control.D.C................................< D uty Captain.

[ D epth Charge.

3833 12

Abbreviation. Meaning.D.C.H.Q....................... Damage Control Headquarters.D.C.H.Q.2 ... ... Secondary Damage Control Headquarters.

/ Damage Control Officer.XJ .Kj.KJ . ... ' ' \_Duty Signal Communications Officer.D.C.O. (I) ... .. Director of Combined Operations (India).D.C.O. (M.E.) ... Director of Combined Operations (Middle East).D.C.S......................... ... Damage Control School.dc/W .. Decimetre Wave.D.D. ... ... Destroyer (U.S.).D.D.A.S. (E.T.) .. D eputy Director of Armament Supply, Eastern

Theatre.D.D.C.O.................... .. Deputy or Assistant Damage Control Officer.D.D.V.E.T................ .. Deputy Director of Victualling, Eastern Theatre.D.E. /D estroyer Escort Vessel (U.S.).

' ' \ Convoy Escort Vessel.D.E.M.S.................... .. Defensively Equipped Merchant Ship.Dee Div. .. Destroyer Division (U.S.).DESOIL................... .. Dieeel Oil (U.S.).D/F. .. Direction Finding/Finder.(No.) D .F .................. .. (No.) Destroyer Flotilla.D .F.C .0..................... .. D uty Flying Control Officer.D.G. f Degaussing.

Delivery Group.D.G.I.S.D................. .. Director-General India Stores Department.D.G.O. .. Degaussing Officer.D.G.P. and L. .. Director-General of Ports and Lights.D.G.R.O.................... .. Degaussing Range Officer.D.G.S.R..................... .. Director-General of Shipbuilding and Repairs.D.G.T.O.................... .. Degaussing Technical Officer.D.G.W.O................... .. Degaussing Wiping Officer.D .I.N .0 ..................... .. Deputy Inspector of Naval Ordnance.DIRMITRAIN .. Director of Military Training.D.L.C.O..................... .. Deck Landing Control Officer.D.L.T........................ .. Deck Landing Training.D.L.T.S..................... .. Deck Landing Training School.D.M............................ .. Light Mine Layer (high speed) (U.S.).D.M.8........................ .. Mine Sweeper (high speed) (U.S.).D-.M.W.T.R.............. .. Deputy Ministry of W ar Transport Representative.D.N.C........................ .. Director of Naval Communications (U.S.).D.N.L.O.................... .. D utch Naval Liaison Officer.D.N.S.O.................... .. Deputy Naval Store Officer.D.O............................ .. Dental Officer.D.O.A.P. ... .. Detailed Overall Administrative Plan.D.O.C.O.................... .. Drafting Officer Combined Operations.D. of S. (W.) .. Director of Stores (Washington).D /R ............................ .. Despatch Rider.D .R ............................ .. Dead Reckoning (U.S.).D .R.A.E....................... Director of Royal Aircraft Establishment.D .R .E .E . ... .. Director of Research and Experimental Establishment.D .R.L.S..................... .. Despatch Rider L etter Service.D.S.............................. .. Dutch Ship.D.S.A.N.F. ... ,. Director South African Naval Forces.D.S.B......................... .. D uty Steam or Power Boat.D.S.C.......................... . D istrict Shipyard Controller.D.S.C.(L) ... . Director of Small Craft (Levant) -D.S.D.F...................... . Director of Seaward Defence Force.D.S.E.A. * ................ Davis Submerged Escape Apparatus.D.S.O............................ Deputy Supply Officer.D.S.O.A.G.................. . Deputy Senior Officer, Assault Group.D.S.P.D...................... . Deputy Superintendent, Pembroke Dock.D.S.T.O...................... . Divisional Sea Transport Officer.D .T.L.......................... . D raft Technical Leaflet (Aircraft Modification).D.T.S.S....................... . Dockyard Tower Signal Station.D.V.S.O...................... . Deputy Victualling Store Officer.

E. E.A................... .. . Engineer R ear Admiral.

13 3833Abbreviaiion. Meaning.

E.A.C ... Eastern Air Command.E .E ................... ... Electrical EngineerE.E.M. ... Electrical Engineering Manager.E.E.S. ... Eastern Examination Service.E .I .................... ... E ast Indies Fleet.E.F.M. ... Expeditionary Force Message.E.F.T.S. ... Elem entary Flying Training School.E.G. (No.) ... ... Senior Officer (No.) Escort Group.E.G.S.U.P. ... ... Eastern Group Supply Council.E .I.S.I.S. ... ... E ast Indies Merchant Shipping Intelligence.E .L .E .I. ... ... Electrical Equipment for repair o f ships in the E ast

Indies Fleet.El. 0 . ... Electrical Officer.E.L.S. ... Express Letter Service.Engr. ... Engineer.E .O ................... ... Engineer Officer.E.O.F.S. ... Engineer Officer French Ships.E.O.S.O. ... ... Escort Oilers Supervising Officer.E .P .2 ... ... Secondary Electrical Control Position.E.R.A. ... Engine Room Artificer.E.R.O. ... Emergency Repair Overseer.E.T.A. ... Estim ated/Expected Time of Arrivdl (U.S.).E .T.D. ... Expected Time of Departure (U.S.).E.T.O.U.S.A. ... European Theatre of Operations, U.S.A.E.T.P. Estim ated Time of Departure (U.S.).F ....................... ... Fighter Aircraft.2 F .................... ... Two-Seater Fighter (Naval) Aircraft.F A A O . ... .. . F leet Anti-Aircraft Officer.F.A.E. ... Fleet Adviser on Education.F.A.M.G. ... ... Fleet Air Maintenance Group.FA ./S.O . ... ... Fleet Anti-Submarine Officer.F. A. V.O. ... ... Fleet Aviation Officer.F .B ................... ... Fighter Bomber Aircraft.F.B.S.O. ... Fleet Bomb Safety Officer.F.C. ... ... Flag Captain.F/C.................... ... Fire Control (Gunnery).F.C.E. (Med.) ... F leet Civil Engineer (Mediterranean).F.C.O. /F le e t Signal Communications Officer.

■ " \F ly in g Control Officer.F.C.P. ... Flying Control Position.F.C.R. .. . Flying Control Room.FCST. ... Forecast (U.S.).F .D ................... . . . Fighter Direction.F.D.B. ... F ast Despatch Beats.F.D.C. ... Fighter Direction Centre.F.D.O. .. . Fighter Direction Officer.F.D.S. ... F leet Dental Surgeon;F.D.T. ... Fighter Direction Tenders.F.E.O. ... Fleet Engineer Officer,F.Ed.O. .. . Fleet Education Officer.F.E1.0. ... Flotilla Electrical Officer.F.F.D.O. ... ... F leet Fighter Direction Officer.F ./F.S. ... French Ship manned by Fighting French.F.G.E.O. ... ... Fleet Gunnery Engineer Officer.F.G.O. ... Fleet Gunnery Officer.F .I.S ................. ... Fleet Information Section.F .L ................... .. . Flag Lieutenant.F.L.C. ... Flag Lieutenant Commander.F.L.O. ... Flag Liaison Officer.FLOT. ... Flotilla (U.S.).FLE. ... F leet (also FLT.) (U.S.).F.L.S. (PO) ... ... French Liaison Service, Portsmouth.FLT.................. ... Fleet (also FLE.) (U.S.).FLY. ... Flight (U.S.).F.Met.O. ... Fleet Meteorological Officer.


F.M.O. /F le e t Medical Officer.\ F leet Mail Officer.

F.N.C.O. ... ... Fleet Naval Constructor Officer.F.N.D. ... Flinders Naval Depot.F.N.G.B. ... ... French Navy in Great Britain.F.N.O. ... Fleet Navigating Officer.F.N.O.I.O. ... ..k Fleet Naval Ordnance Inspecting Officer.F.O................... ... Flag Officer.F.O-A.B.P.F. ... Flag Officer Commanding Aircraft Carriers, British

Pacific Fleet.F.O.Air E .I.... ... Flag Officer (Air), E ast Indies Fleet.F.O.B. /F la g Officer, Bombay.

\F o rw ard Observer, Bombardment.F.O.C. ... Flag Officer Commanding.F.O.C.O.S. ... • •• Flag Officer Commanding Orkneys and Shetlands.F.O.C.R.F. ... ... Flag Officer Commanding Reserve Fleet.F.O.C.R.I.N. ... Flag Officer Commanding Royal Indian Navy.F.O.C.S. ... Flag Officer, Cruiser Squadron.F.O.C.T. ... Flag Officer, Carrier Training and Administration.F.O.C.W.A.F. ... Flag Officer Commanding, W est Africa.F.O .F.T.B.P.F. Flag Officer, F leet Train, British Pacific Fleet.F.O.G.M.A. ... ... Flag Officer, G ibraltar and Mediterranean Approaches.F.O.G.M.O. ... • •• F itting Out Gun Mounting Overseer.F.O.G.O ... Fitting Out Gunnery Officer.F.O.I.C. ... Flag Officer-in-Charge.F.O.I.C.N.I. ... F lag Officer-in-Charge, Northern Ireland.F.O.L.E.M. ... ... Flag Officer, Levant and Eastern Mediterranean.F.O.L.U.S. ... ... Flag Officer Liaison w ith Cdr. U.S. Naval Forces in

Europe.F.O.N-A.S. ... ... Flag Officer, Naval Air Stations (U.K.).F.O-N.A.S.(A) Flag Officer, N aval Air Stations (Australia).F.O.N.F. ... ... Flag Officer, Newfoundland.F.O.P.S. ... Future Operations Planning Sections.FO R ................. ... Force (U.S.).F.O. (S/m.) ... ... Admiral (Submarines).F.O .T.A .L.I.... ... Flag Officer, Taranto and Adriatio and for Liaison

du ty w ith Italians.F.O.Y.E. ... ... Flag Officer, “ Y ” Entries.F.P.O. ... Fire Prevention Officer.F.P.S.L. ... Full Pay Sick Leave.I F .P .P . ... No. 1 Ferry Pilots Pool.F .R ................... ... F ighter Reconnaissance.F.R .A. ... ... Freetown Area.F .R .A J3.0 . ... ... Fleet R adar Officer.F .R M.O. ... • •• F leet Royal Marine Officer.F.R.O. ... F leet P . and R /T Officer.F .R .U . ... F leet Requirements U nit—Aircraft.F.S.A. ... F leet Signal Assistant.F.S.L. ... Foreign Service Leave.F.S.O. j f Fleet Supply Officer... ̂ (F lee t Salvage Officer.F.T.O. Jr French Technical Officer.

- 1 Fleet Torpedo Officer.F.W.A. ... F leet Wireless Assistant.FiW.O. ... F leet Wireless Officer.F . W/T.M.O. ... Fleet W /T Maintenance Officer.

G, G. . . . ... ... Gunnery.G.(No.) ... Senior Officer (No.) M.G.B. Flotilla.G-A................ ■ *. Ground A ttacker Aircraft.G.C.B. ... Good Conduct Badge.G.C.C.S. ... ... Government Code and Cypher School.G.C.O. ... Gunnery Control Officer.G.C.T. ... Greenwich, Civil Time.G.E.O. ... Gunnery Engineer Officer.G.H.Q. ... General Headquarters.

15 3833Abbreviation.

G.H.Q.M.E.... G.H.Q.S.W.P.A. G.I.R.O.G.L.O.G.M.A.G.M.O.G.M.T.G.N.A.G.N.L.O. ...G.O.................G.O.C.G.O.P.G.O.S. Ship ...GR..................G.R.................G.S.................G.S.F.G.S.P.G.T.C.H.A. ...H.A.C.O. ... H.C.O.H.C.P.H.D.A.H.D.M.L. ... H.D.O.H.D.R.H/F.

H J .................

H.F.P.H.G................HONO.H.Q................H.Q.B.C. ... H.Q.B.T.N.I. H.Q.C.A. ... H.Q.C.C. ... H.Q.F.C. ... H.Q.H.F. ... H.Q.R.A.F.M.E. H.Q.R.C.A.F. H.S.B.P.T. ...H.S.L.H.S.T.S.I.A.F.I. A/S.E. ... I.C.C.D.P. ... I.C.C.F.S. ... ICEPAT ... I.CJE. School I.C.O.C.I.D.G.I.E..................I.L..................INFO.I.N.O.Inst. (Lieut., etc.) INTEL.1 .0 ...................I.O.A.I.P.O.I.8.C.

... General Headquarters, Middle East.

... General H.Q. South W est Pacific Area

... General Instructions Routing Officers.

... Gunnery Liaison Officer.... Gibraltar, Morocco Area.... Gun Mounting Overseer.... Greenwich Mean Time.... Greek Naval Attaché.... Greek Naval Liaison Officer.... Gunnery Officer.... General Officer Commanding.... General Operational Plot.... Norwegian Whaler.... Group (U.S.).... General Reconnaissance Aircraft.... Greek Ship.... Gulf Sea Frontier.... General Staff Planning.... Government Telegraph Code.... High Angle (Gunnery).... High Angle Control Officer.... Hangar Control Officer.... Hangar Control Position.... Harbour Defence Asdic Installation.... Harbour Defence Motor Launch.... Harbour Defence Operator.... Home Dockyard Regulations.... High Frequency.

("Home Fleet.. . .J Fighter Aircraft fitted with engine rated for high

(_ altitude performance.... Height Filtering Position.... Home Guard.... Honolulu (U.S.).... Headquarters.... Headquarters Bomber Command.... H.Q. British Troops in Northern Ireland.... Headquarters Coastal Artillery.... Headquarters Coastal Command.... Headquarters, Fighter Command.... Headquarters Home Forces.... H.Q. Royal Air Force, Middle East.... H.Q. Royal Canadian Air Force.... High Speed Battle Practice Target.

{High Speed Launch.Home Service Leave.

... High Speed Target Service.

... Inspector of Admiralty Fuel.

... Inspector of Anti-Submarine Equipment.

... Iceland Coastal Command Daily Programme.Inspecting Capt. of Coastal Force Schools.

... Iceland Patrol (U.S.).

... Internal Combustion Engine School.

... Instructions for Commodores of Convoys.

... Inspector of Degaussing.

... Initial Equipment—Aircraft.

... Indicator Loop.

... Information.

... Inspector of Naval Ordnance.

... Instructor (Lieutenant, etc.).

... Intelligence (U.S.).

... Inspecting Officer (Naval Stores).

... Indian Ocean Area.

... Inshore Patrol Officer.

... Inter-Service Cypher.

Meaning.

3833 16

1.5.C.B.LS.T.D.1.5.T.D.C. ...I .T ....................I.T.M.I.T.O.I .X ...................

J. J.A.N.J.S.M.J.W .P.S. ...

K. K.B.O.K.H.M.KMWK .F.I.B . ... K .R . & A.C.I.K .R. & A .I. ...K U F ................

L. L. .. . ...L.A...................LANT.LAT.L.B.E.L.B.F.L.B.K.L.B.O.Lbr. (Det.) (Bn.) L.B.S.L.B.V.L.B.W.L.C....................L.C.A.L.C.A. (SR .) L.C.B.L.C.C.L.C.E.L .C J .L.C.F.F.L.C.F.U. L.C.G.(L.) ... L.C.G.(M) ... L.C.G.(T) ... L.C.H.L.C.I.G.L.C.I.(L) ... L.C.I.(S)L.C.M.L.C.M.B. ... L.C.M.S.D. ... L.C.M.S.O. ... L.C.N.L.C.O.C.U. ... L.C.P.L.C.P.(L) . . . L.C.P.(M) ... L.C.P.(N) ... L.C.P. (R) ... L.C.P.(S) ... L.C.P. (S.Y.) L.CJR.L .C Jt.U . ... L.C.S. (L) ... L.C.S.(M) ... L.C.S.(&) ...

Abbreviation.Inter-Service Communications Board (U.S.). Inter-Service Topographical Dept. Interservice Training Defence Centre. Instructional Technique.Inspector of Torpedoes and Mines.

{Instructing Torpedo Officer.Instructional Technique Officer.Miscellaneous Unclassified Ships (U.S.).Jo in t Army and Navy Radio Procedure. Jo in t Staff Mission.Jo in t W ar Production Staff.K ite and Balloon Officer.King’s Harbour Master.Senior Polish Naval Officer in London.Key Points Investigation Bureau.King’s Regulations & Air Council Instructions. King’s Regulations & Admiralty Instructions. Polish Drafting Officer, London.Alexandria.Low Angle (Gunnery).Atlantic (U.S.).Latitude (U.S.).Landing Barge, Emergency Repair.Landing Barge, Flak.Landing Barge, Kitchen.Landing Barge, Oiler.Labour (Detachment) (Battalion) (U.S.) Landing Barge, Support.Landing Barge, Vehicle.Landing Barge, W ater.Lifting Craft.Landing Craft, Assault.Landing Craft (Hedgerow).Landing Craft Base.Landing Craft, Control.Landing Craft, Emergenoy—Repair.

{Levant Coast Flotilla.Landing Craft, Flak.Landing Craft, Infantry , Flotilla Flag. Landing Craft Ferry Unit.Landing Craft, Gun (Large).Landing Craft, Gun (Medium).Landing Craft, Gun (Tower).Landing Graft, Headquarters.Landing Craft, Infantry , Gunboat.Landing Craft, Infantry (Large).Landing Craft, Infantry (Small).Landing Craft, Mechanized.Landing Craft, Maintenance Base.Landing Craft, Material Supply Depot. Landing, Craft, Material Supply Officer. Landing Craft, Navigation.Landihg Craft, Obstruction Clearance Unit. Landing Craft, Personnel.Landing Craft, Personnel (Large).Landing Craft, Personnel (Medium).Landing Craft, Personnel (Nested).Landing Craft, Personnel (Ramped).Landing Craft, Personnel (Small).Landing Craft, Personnel (Survey).Landing Craft, Rubber.Landing Craft Recovery Unit.Landing Craft, Support (Large).Landing Craft, Support (Medium).Landing Craft, Support (Small).

Meaning. 17 3833Abbreviation. Meaning.

L.C.S.S. ... Landing Craft Storage Section.L.C.T. ... Landing Craft, Tank.L.C.T.(A) ... ... Landing Craft, Tank (Armoured).L.C.T.(E) ... ... Landing Craft, Tank (Emergency Repair).L.C.T.(R) ... ... Landing Craft, Tank (Rocket).L.C.V. ... Landing Craft, Vehicle.L.C.V.(P) ... ... Landing Craft, Vehicle (Personnel).L /F ................... ... Low Frequency.L .F................... .. . Fighter Aircraft fitted w ith engine rated for low

altitude performance.L.N. No. ... ... List of Navy Numbers.Ln. (O.) ... Liaison (Officer).LONG. ... Longitude (U.S.).L.O.N.N. ... ... Liaison Officer, Norwegian Navy.L.O.P. ... Local Operational Plot.L.R.R. ... Lower Receiving Room.L.R.R.C. ... Long Range Rescue Craft.L.S.B. ... Landing Ship, Bombardment.L.S.C. ... Landing Ship, Carrier (Derrick-hoisting).L.S.D. ... Landing Ship, Dock.L.S.E. ... Landing Ship, Emergency Repair.L.S.E. (L.C.) ... Landing Ship, Emergency Repair (Landing Craft).L.S.E. (L.S.) ... Landing Ship, Emergency Repair (Landing Ship).L.S.F. ... Landing Ship, Fighter Direction.L.S.G. ... Landing Ship, Gantry.L.S.H. ... Landing Ship, Headquarters.L.S.H.(L.) ... ... Landing Ship, Headquarters (Large) for a Divisional

Force.L.S.H.(S) ... . .. Landing Ship, Headquarters (Small) for a Brigade

Force.L.S.I.(H) ... ... Landing Ship, Infantry (Hand-hoisting).L.S.I.(L) ... Landing Ship, Infantry (Large).L.S.I.(M) ... ... Landing Ship Infantry (Medium).L.S.I.(S) ... Landing Ship, Infantry (Small).L.S.M. ... Landing Ship, MediumL.S.M.R. ... Landing Ship, Medium, Rocket.L.S.M.S.O. ... ... Landing Ship Material Supply Officer.L.S.P. ... Landing Ship, Personnel.L.S.S. ... Landing Ship, Stem-Chute.L.S.T. ... Landing Ship, Tank.L.S.T.P/B.U. ... Landing Ship, Tank, Pontoon-Barge Unit.L.S.V. ... Landing Ship, Vehicle.L /T ................... Line Telecommunication.L t...................... ... Lieutenant.L t. Cdr. (F) ... ... Lieutenant Commander, Flying.Lt. (Col.) (Gen) ... Lieutenant-Colonel or -General.L.V.T. ... Landing Vehicle, Tracked.L.V.W. ... Landing Vehicle, Wheeled.

M M...................... ... Minelayer.M. (No.) ... Capt. M. (No.) Minelaying Squadron.M.A.A. ... Master a t Arms.M.A.A.F. ... ... Mediterranean Allied Air Forces.M.A.C. f Merchant Aircraft Carriers.

■" \M inesweeping A ttendant Craft.M.A.C.A.F. ... ... Mediterranean Allied Coastal Air Forces.M.A.C. (Air) ... Munitions Assignment Committee (Air), Washington.M.A.C.R.I. ... ... Mercantile Atlantic Coastal Routing Instructions.M.A.D. ... Magnetic Air Detector.M.A.D.P. ... ... Main Air Display Plot.M.A.E.E. ... ... Marine Aircraft Experimental Establishment.M.A.F.O.G. ... ... Mediterranean Area Fighter Operations Grid.M.A.R.I. ... ... Mercantile Atlantic Routing Instructions.M.A/S.B. ... ... Motor Anti-Submarine Boat.M.A/S.M.U. ... ... Mobile Anti-Submarine Maintenance U nit.MLA/S.T.U. ... ... Mobile Anti-Submarine Training Unit.


M.A.T.M.U. ...M.B..................M.B.C.U. ...M.B.M.U. ... ...M.B.W.M.C.D. ...M.C.L. ...Mc/S.................M.E.D. ...Med. ...M.E.D.I.C.O.S. ...M .E.I.R .I. ... ...M.E.O.P. (Major) ...

M.E.O.P. (Minor) ...

MERSIGS. ... ...M /F.................. ...M .F................... ...M.F.A. ...M.F.V. ...M.G. ...M.G.B. ...Mid. ... ...MILL. ...MIN. ...Min: L.C.F.U. ...Min. L.C.R. & D.

Staff.Min. L.C.S.S. ...M.I.S. ...M.J.A.O. ... ...M.L................... ...M.L.B. ...M.L.C.M.L.C.C.A.R. Staff.’

M.L.O. ..M.L.R.U. ... . .M.M.S. ..M.N.C. ..M.N.E.U. ... ..M .N .O J.F . ..M.N.P. ..M.O. ..M.O.F. ..M. of W.T. ... ..M.O.G.M.O.I.C. ..M.O.L.C.A.B. ..M.O.M.P. ... ..M.O.N.A.B. .. ..M.O.R.T. .. ..M.P.C.R.I. ..M.P.O.S.E.A.M.P.R. ..M .P.R.I. ..M.R.A. -M.S.................. ..M.S. (No.) .. ..M.S.B. ..M.S.C.I.

Meaning.Mobile Aircraft Torpedo Maintenance Unit.Motor Boat.Mobile Bombardment Control Unit.Mobile Base Maintenance Unit.Munitions Assignment Board, Washington.Manager Constructive D epartm ent.Maintenance Captain, Landing Ships and Craft.

. Megacycles.

{Manager Engineering D epartm ent.Mediterranean and Red Sea Area.Mediterranean.Mediterranean Instructions to Convoys.Mercantile E ast Indies Routing Instructions.Mobile Engine Overhaul Parties (for Major Landing

Craft Engines).Mobile Engine Overhaul Parties (for Minor Landing

Craft Engines).Merchant Ships’ Signal Book.Medium Frequency.Mediterranean Fleet.Mercantile Fleet Auxiliary.Motor Fishing Vessel.Medical Guard.Motor Gun Boat.Midshipman.Miniature Indicator and Listening Loop.Mine; Minecraft (U.S.).Minor Landing Craft Ferry Unit.Minor Landing Craft Receipt and Despatch Staff.

Minor Landing Craft Storage Section.Mine Issuing Ship.Mediterranean Jo in t Air Orders.Motor Launch.Motor Lifeboat (CG) (U.S.).Major Landing Craft.Major Landing Craft Commissioning and Reception

Staff.

{Military Liaison Officer.Military Landing Officer.

. Mobile Land Repair Units.

. Motor Minesweeper.

. Merchant Navy Code.

. Mission Navale E ta ts Unis, Washington.

. Merchant N avy Officer’s Pension Fund.

. Merchant N avy Privilege.

. Medical Officer.

. Master of the Fleet.

. Ministry of W ar Transport.

. Medical Officer of the Guard.

. Medical Officer-in-Charge.

. Mobile Landing Craft Advanced Base.

. Mid Ocean Meeting Point.

. Mobile Naval Air Base.. Maintenance Officer, Rescue Tugs.. Mercantile Pacific Coastal Routing Instructions.. Master Provision Officer, South E ast Asia.. Military Plotting Room.. Mercantile Pacific Routing Instructions.. Maritime Royal Artillery.

{Minesweeper.Motor Ship (U.S.).

. Senior Officer (No.) Minesweeping Flotilla.

. Main Switch Board.. Mediterranean Secret Convoy Instructions.

19 3833

N.A.C.

M.S.F.F. ... ... Moroccan Sea Frontier.M.S.F. (No.) . . . (No.) Minesweeping Flotilla.M.S.G. (No.)... ... (No.) Minesweeping Group.M.S.G.O. ... ... Mediterranean Secret General Orders.M.S.R.T....................... Marine Superintendent of Rescue Tugs.M.S.R.T.M................... Marine Superintendent, Rescue Tugs, Mediterranean.M.T.A.T. ... ... Mobile Torpedo A ttack Teacher.M.T.B. ... . . . Motor Torpedo Boat.M.T.M.U. ... ... Mechanical Training Mobile Unit.M.T.O. ... ... Medical Transport Officer.M.T.S. ... ... Motor Transport Service.M.U. ... ... ... Maintenance Unit.M.W.T. ... ... Ministry of W ar Transport.M.W.T.R. ... ... Ministry of W ar Transport Representative. M.W.T.M.E. ... Ministry of W ar Transport Representative, Middle East.

N. N. . . . . . . . . . Navigation.N.A. ... ... ... Naval Attaché.N.A.B. ... ... Naval Auxiliary Boats.

{Naval Accommodation.Naval Assignment Sub-Committee for U.S. Ammuni

tion Pool.N.A.D. ... ... Naval Armament Depot.N.A.D.C.U. .. . ... Naval Air Defence Control Unit.N.A.F. ... ... Naval Assault Force.N.A.F.C.A. ... ... Naval Assault Force Commander, Arakan.N.A.F.D.U. ... ... Naval Air Fighting Development Unit.N.A.F.I. ... ... Naval Air Fighting Instructions.N.A.F.S. .. . ... Naval Air Fighter School.N.A.M.O. ... ... Naval Air Maintenance Orders.N.A.M.P.C.B. ... Naval Air Maintenance Party , China Bay.N.A.R. ... ... Naval Air Representative, B.A.D., Washington. N.A.R.M.G. ... ... Naval Air Radio Maintenance Group.N.A.R.M.P. ... ... Naval Air Radio Maintenance Parties.N.A.S. .. . ... Naval Air Station/Section.N.A.S.O. ... ... N aval Armament Supply Officer.N.A.S.O.L. ... ... Naval Armament Supply Officer, Levant.NA.S.S. ... ... Naval Air Signal School.N.A.S.S.O. ... ... Naval Air Stations Standing Orders.N.A.S.T.M................... Naval Air Stations Temporary Memoranda.N.A.T.N. ... ... N aval Air Tactioal Note.NA..V. ... ... Naval Armament Vessel.NAVOP. ... . .. N aval Operation (U.S.).N.A.Y. ... ... Naval Auxiliary Yachts.N.B.C. ... . .. Naval Beach Commando.N.B.G. ... ... New Barracks, Gosport.N.B.S.S. . . . ... N aval Beach Signal Station.N.C.A.F. ... ... Naval Commander, Assault Force.N.C. Group ... ... Naval Co-operation Group.N.C.N.A.F................... N aval Commander Northern A ttack Force.N.C.S.I. ... ... Naval Control Service Instructions.N.C.S.O. ... ... N aval Control Service Officer.N.D.B.S. ... ... Naval Despatch Boat Service.N.D.O. .. . ... Northern Drafting Officer.N.E.A. ... ... N orth E ast Atlantic Area.N.E.O.C.D.E. ... N aval Experim ental Officer, Chemical Defence Experi

mental Station.N .F............................... N ight Fighter Aircraft.N.F.C.B. ... ... N aval Force Commander, Burma.N .F.C .I.E.F................. Naval Force Cdr., India Expeditionary Force.N .F.I.S ......................... N aval Fighting Instruction School.N.F.S. ... ... N ational Fire Service.N.F.T.S. ... ... Night Fighter Training School (Naval).N.G.C.S. ... ... N aval General Call Sign.N.H.O. ... ... Naval Health Officer.N .K.B. ... ... N ot K ite Balloons.



N.L................................ Naval Lightered (Pontoon Equipment).N.L.D..........................< Naval Lightered (Pontoon) Dock.N.L.O........................... Naval Liaison Officer.N.L.O.(A) ................ Naval Liaison Officer (Australia).N.L.O.(T) ................ Naval Liaison Officer (Transport).N.M.C.S........................ Naval Member of Canadian Jo in t Staff.N.M .L.0....................... Naval Meteorological Liaison Officer.N.M.S........................... Naval Meteorological Service.N .N .L .0....................... Norwegian Naval Liaison Officer.

N.O...............................f Naval Officer.\N avigating Officer.

N.O.B........................... Naval Operation Base (U.S.).NOBARGEN. Naval Operating Base, Argentia (U.S.).NOBERM................... Naval Operating Base, Bermuda (U.S.).N.O.B. GTMO. Naval Operating Base, Guantanamo (U.S.).NOBHALIX. Naval Operating Base, Halifax (U.S.).NOBSYD.................... Naval Operating Base, Sydney (U.S.).NOBTRIN .................. N aval Operating Base, Trinidad (U.S.).N.O.i/o. Naval Officer-in Charge.N.O. i/o C.P. Naval Offieer-in-Charge, Cyprian Ports.N.O.I.O........................ Naval Ordnance Inspecting Officer.N.O.R.I.B .................... Naval Officers’ Relatives Information Bureau.N.O.T.U....................... Naval Operational Training Unit.NOTWT...................... N ot W/T.N.P.A........................... N orth Pacific Area.N .P.D ........................... Naval Purchasing Division.N .P.L ........................... National Physical Laboratory.N.P.M........................... Naval Provost Marshal.N .P.T ........................... Northern Patrol Trawlers.N R. ................ Number (U.S.).N.S................................ Norwegian Ship.N.S.A............................ N orth Sea Area.N.S.B............................ Naval Servicing Boat.N.S.B.T........................ Naval Section, Bombardment Troop.N.S.H.Q....................... Naval Service Headquarters.N.S.I.S........................ . Naval Store Issuing Ship.N.S.O............................ N aval Store Officer.N.S.U........................... Naval Scout Unit.N.S./V.S.I.S. Combined Naval and Victualling Store Issuing ShipN.T.A. (East) (West) N orthern Transit Area East/W est.N .T.S............................ Naval Transportation Service (U.S.).N.W.A.......................... N orth West Atlantic Area.N .X ............................... Naval Exchange.NYBOS........................ Navy Yard, Boston (U.S.).NYD............................. N avy Yard (U.S.).NYPEARL Navy Yard, Pearl JI arbour (U.S.).N.Z.N.B....................... New Zealand Naval Board.O............................ Observer.O.A.M.C.U. Overseas Air Movements Control Unit.O.A.P........................... Observation Amphibian Plane (U.S.)O.B............................... Ordnance Board.O.B.V........................... Ocean Boarding Vessel.O.C.A.S........................ Officer-in-Charge of Armament Supply.O.C.R.M....................... Officer Commanding, Royal Marines.O.C.W.......................... Officer-in-Charge Works.OINC. ............... Officer-in-Charge (U.S.).O.L.P............................ Observation Landplane (U.S.).O.N............................... Official Number.O.O.D........................... Officer of the Day.O.O.G........................... Officer of the Guard.O.O.P........................... Officer of Patrol.O.O.W.......................... Officer of the Watch.O.R............................... Operations Room.O.R.B.S........................ Overseas Recorded Broadcasting Service.O.R.O........................... Operations Room Officer.


O.R.P........................... Polish Ship.o A e .d ....................... Operational Signal Equipment Depot.O.T.C............................ / Officer in Tactical Command (U.S.).

\ Officers’ Training Course.O.U............................... Official Use.O.X.V........................... Outer Examination Vessel.P .................................... Pilot.PA................................. Panama.PAC. ................ Pacific (U.S.).P.A.I.C......................... Persian and Iran Commands.P .A .0 ............................ Principal Administrative Officer.P.A.P.D.O.(I) Plastic Armour Protection Development Officer (India)P .A .P .O .(I) ................ Plastic Armour Protection Officer (India).P.A.S.O........................ P ort A/S. Officer.PAT. ................ Patrol.P.B. Mr........................ Principal Beach Master.P.B.O............................ Principal Boat Overseer.P.C................................ /1 8 0 ft. A/S Vessel.

\P a t r o l Vessel submarine chaser (U.S.).P.C.B............................ Protected Communications Building.P.C.C.F......................... Progress Captain Coastal Forces.P.C.E............................ Escort (180 ft.) (U.S.).P.C.E.(R) ................ Escort (Rescue) (180 ft.) (U.S.).P.C.E.T........................ Personnel Controller Eastern Theatre.P.C.O............................ f Principal Control Officer.

1 Principal Cypher Officer.P.C.S.............................■/S ubm arine Chaser (136 ft.) (U.S.).

\ Position Course and Speed.P.D.S.C........................ Perm anent Degaussing Specification Centre.PEARL........................ Pearl H arbour (U.S.).P.E.O ........................... Principal Electrical Officer.P .E .R .0 ....................... Principal Emergency Repair Overseer.P .F ................................ Patrol Craft, Frigates (U.S.).P.F.L.O........................ P o rt Facilities Liaison Officer.P/G ................................ Postagram.P.G................................ Patrol Craft, Gunboats (U.S.).P.G.M. ................ Motor Gunboat (U.S.).PHIBCRAFT Amphibious Craft, 12th Fleet (U.S.).

TW ELFTHP/L. ............................ Plain Language.P .L .E ............................ Prudent Limit of Endurance.P.M.O........................... Principal Medical Officer.P.M.S.O........................ Po rt Minesweeping Officer.P.M.T.O....................... Principal Medical Transport Officer.P/N . ................ Phonogram. .P.NJV........................... Polish Naval Attaché.P .N.L.O....................... Principal British Naval Liaison Officer to Allied Navies

P.O. ... ................- f Pilot Officer.^ P etty Officer.

P.O.B........................... President, Ordnance Board.P.O.M.M.D.V................ Principal Officer Mercantile Marine Dept.P .O .P............................ Paxm an Overhaul Parties.P .P ................................ Palestinian Ports.P.P.A.P.O.(I) Port Plastic Armour Protection Officers (India).P .P .I............................. Plan Position In . ...ator.P.P.O ............................ Principal Priority Officer.

P .R ............................... -jf River Gunboat (U.S.).[_Photographic Reconnaissance Aircraft.

P.R.A.D.O................... P o rt Radar Officer.P.R.L.O....................... Principal Repair Liaison Officer.P .R .U ........................... Photographic Reconnaissance U nit (Aircraft,P.R.V ........................... Paravane Ranging Vessel.P.S.A............................ Probationary Stores Assistant.P.S.C-D........................ Patrol Service Central Depot.


P.S.F. ... Panam a Sea Frontier.P.S.O. f Principal Ship Overseer.

Personnel Selection Officer.P.S.T.O. ... Principal Sea Transport Officer.P.S.T.O.M.E. ... Principal Sea Transport Officer, Middle East.P.S.V.O. ... Principal Salvage Officer.P .T ................... Patrol Vessel, Motor Torpedo Boat (U.S.).P.T.C. ... Motorboat, Submarine Chaser.P.T.C.O. ... Principal Technical Costs Officer.P/V ................... Paravane.P.W.S.S. ... ... Port W ar Signal Station.P.W./T.O. ... ... Port W /T Officer.PY .................... ... Patrol Vessel, Y acht (U.S.).PYc.................. ... Coastal Y acht (U.S.).

Q. Q. (No.) ... ... Senior Officer (No.) M.L. Flotilla.Q.A.R.N.N.S. ... Queen Alexandra’s Royal Naval Nursing Service.Q.A.R.N.N.S.(R) ... Queen Alexandra’s Royal N aval Nursing Service

(Reserve).R. R /A .................. ... Radio Acoustic.

R .A ............................ ... R ear Admiral.R.A.(A) ... R ear Admiral Aircraft Carriers.R.A.C. ... R ear Admiral Commanding.R.A.C.O.B.(W.A.) ,... R ear Admiral Commanding Combined Operational

Bases (Western Approaches).R.A.C.O.N................ .. R adar Beacon.R.A .D ........................ .. Rear Admiral, Destroyers.R.A.(D)B.P.F. .. Rear Admiral (D), British Pacific Fleet.R .A .E........................ .. Royal Aircraft Establishment.R .A .F.T.................... Rear Admiral, Fleet Train.R.A.L.S.C.U. .. .Rear Admiral, Landing Ships and Craft, Unallocated.R.A.(M)~ .. R ear Admiral (Minelayers).R.A.N.A.S.(I.O.) . .. R ear Admiral Naval Air Stations (Indian Ocean).R.A. (No.) ... .. R ear Admiral (No.) B attle Squadron.R.A.N.V.R............... .. Royal Australian Naval Volunteer Reserve.R.A.(Q) E .I. .. R ear Admiral (Q), E ast Indies Fleet.R.A.T.O.G................ .. Rocket-Assisted Take-Off Gear (Aircraft).R.C.L......................... .. Ramped Cargo Lighter.R.C.M........................ .. Radio Counter Measures.R.C.N.V.R................ .. Royal Canadian Naval Volunteer Reserve.R.C.O......................... .. Remote Control Office.R .D .B ........................ .. Ramped Dumb Barge.R .D .R ........................ .. Radar Display Room.R .D.U ........................ .. Receipt and Dispatch U nit (Aircraft).R .E .A........................ .. Radio Equipm ent Assistant.RECON..................... .. Reconnaissance (U.S.).RESTD ..................... .. Restricted.R .F ............................. .. Reserve Fleet.R .F.A ........................ .. Royal F leet Auxiliary.R.G.S.S..................... .. Registrar General of Shipping and Seamen.R .H .N ........................ .. Royal Hellenic Navy.R.I.N .L.O ................. .. Royal Indian Naval Liaison Officer.R .I.O ......................... .. Resettlement Information Officer.R.L.H .Q.................... .. Rear Link Headquarters.R.L.O........................ .. Repairs Liaison Officer (Landing Craft and Barges).R.M.B.P.D. ... .. Royal Marine Boom Patrol Detachment.R .M .E........................ .. Royal Marine Engineers.R.M.L........................ ... Rescue Motor Launch (Air/Sea Rescue).R.M.O........................ .. Royal Marine Office.R.M.S.O..................... .. Royal Marine Signal Office.R.M.T.G..................... .. Royal Marine Training Group.R.N .A......................... R adar Navigational Aid.R.N.A.D....................... Royal Naval Armament Depot.R .N.A .H..................... . Royal Naval Auxiliary Hospital.R.N.A.M.Y................ . Royal N aval Aircraft Maintenance Yard.R .N.A.R.Y................ ,. Royal Naval Aircraft Repair Yard.


R.N.A.S. ... R .N A .T .E . ... R.N.B.R.N.B.T.R. ... R.N.C.F. ... R.N.D.R.N.D.Q. ... R .N .G .H .Q .... R.N.H.R.N.L.O. ... R.N.N.R.N.O.R.Nor.N..........R .N.P.F. ... R.N.P.S.R.N.R.R.N.S.Q. ... R .N.T.E. ... R .N.T.F. ... R.N.W.A.F. R.N.W.C.C. ... R.N.W.L. ... R.O.R.O.CA.. ... R.R.D .E. ... R/T.R.T.O.RUSNO. ... R.Y.N.

S. {Rank) S.S.A. ....(Rank) S .A .... SA.A.L.O. ... S.A.C.S.E.A.... S.A.G.E.S.A.L.O.S.A.MS. and L.P. ...S. and R . Flot. S.A.R.O.S.A.S.O.S.A.T.

S.B. ...S.B.D.S.B.L.O.S.B.N.O. ...S.B.N.O.W.A.S.B.T.D.

S.C.

S.C.A.E.F. ... S.C.E.S.C.I.................S.C.O.S.C.P.O.S.D...................S.D. (Schedules) S.D.C.

Meaning.... Royal Naval Air Station.

{Royal Naval Air Training Establishment.Royal Naval Artificer's Training Establishment.

... Royal Naval Barracks.... Royal Naval Benevolent Trust Representative.... Royal Naval Cordite Factory.... Royal Naval Division.... Royal Naval Detention Quarters.... Royal Navy, General Headquarters (Cairo).... Royal Naval Hospital.... Royal Naval Liaison Officer.... Royal Netherlands Navy.... Resident Naval Officer.... Royal Norwegian Navy.... Royal Naval Propellant Factory.... Royal Naval Patrol Service.... Royal Naval Reserve.... Royal Naval Sick Quarters.... Royal Naval Training Establishment.... Royal Naval Torpedo Factory.... Royal Naval W ar Amenities Fund.... Royal Naval W ar Comforts Committee.... Royal Naval W ar Libraries.... Reporting Officer.... Repair Officer Canal Area (Port Said).... Radio Research and Development Establishment.... Radio Telephony.

{Railway Transport Officer.Research Technical Officer.

... Resident U.S. Naval Officer.

... Royal Yugoslav Navy.

... (Rank) (Supply and Secretariat Branch).

{Stores Assistant.South Atlantic.

... (Rank) Ships’ Air Staff (in other than Flagships).

... 'Senior Ack Ack Liaison Officer.

... Supreme Allied Commander. South-East Asia.

... Superintendent, Admiralty Gunnery Establishment. ... South African Liaison Officer.... School of Aircraft Maintenance.... Syrian and Lebanese Ports.... Supply and Repair Flotilla (Landing Barges).... Staff Air Radio Officer.

Senior/Superintending Armament Supply Officer.... Superintendent of British Air Training, B.A.D.

Washington.... Signal Boatswain.... Superintendent of Boom Defence, Rosyth.... Senior Bombardment Liaison Officer.... Senior British Naval Officer.... Senior British Naval Officer, Western Atlantic.

... Static Base Torpedo Depot.'S h ip ’s Circulation.Senior Constructor.Service Certificate-s.Submarine Chaser (110 ft.) (U.S.).Store Carrier.Supreme Commander, AU’.c.l Expeditionary Force. Superintending Civil Engineer.Smoke Curtain Installation (Aircraft).Squadron Signal Communications Officer.Stores Chief Petty Officer.Secret Document (R.A.F.).Supplementary Demand/Distribution (Schedules). Shipyard Development Committee.


S.D.D.S. (E.T.)S.D.O..........................

S.D.S...........................

S.E.A.......................... .S.E.A.A.C.H.Q.S.E.A.C.......................S.E.A.F.O.G.S.E.C.N.A.V.Sec. O.B......................S.Ed.O.........................S .E .E ...........................S.E.O...........................S.E.P.A........................S.F.F.S.........................S.F.T.S.........................S.G.B............................S.G.E.O........................S.G.O............................S.H.A.E.F...................SHA.No.......................S.I.D.G........................S.I.O.C.O.....................S.M...............................S/M. ............................S/m (Cardinal

Numeral)

Meaning.Senior Deputy Dilector of Stores (Eastern Theatre). Signal Distributing Office.

f Senior Dental Surgeon.-< Seaward Defence SJjip.^ Signal Despatch Service.

South E ast Asia.South E ast Asia Air Command Headquarters.South E ast Asia Command.South E ast Asia Fighter Operations Graticule System. Secretary of the Navy (U.S.).Secretary Ordnance Board.Staff/Squadron Education Officer.Superintending Electrical Engineer.Squadron Engineer Officer.South E ast Pacific Area.Ships Fire Fighting School.Service Flying Training School.Steam Gun Boat.Squadron Gunnery Engineer Officer.Squadron Gunnery Officer.Supreme Headquarters, Allied Expeditionary Force. Shore A uthority Number.Superintending Inspector of Degaussing.Senior Intelligence Officer, Combined Operations.Minelaying Submarine.Submarine.Captain (S/m) (Ordinal Numeral) Submarine Flotilla.

S.M.D.S.M.E.S.Met.O.S.M.O.S.M.P.S.N.A.D. ...S.N.C.F.S.N.C.O.S.N.E.O.(T)S.N.O:S.N.O.B.O.P.F.S.N.O.C.S.N .O .D EK ...S.N.O.E.Sy.S.N.O.L.S.N.O.L.A. ...S.N.O.P.G. ...S.N.O.R.S.C.A.S .N .O .W .It....S.N.R.s .n .s .o .s.o.5 .0 . (Air) ...5.0.A.G.5.0.A.S.C.(I)5.0.B.G. ...5.0.C.5.0.(D)S. ...5 .0 .E .5.0.E.I.D elhi5 .0 .E .I.K andy S. of A.U.W.5.0.F.C.5.0.F.S.C. ...5.0.F.(V) ...5.0.G.

Superintendent of Mine Design.... Squadron Mobile Equipment.... Staff/Squadron Meteorological Officer.... Senior/Squadron Medical Officer;

Special Maintenance Party.... Superintendent Naval Armament Depot.... Southern Naval Coastal Frontier.

Squadron Naval Constructor Officer.Senior Naval Experimental Officer (Torpedoes). Senior Naval Officer.Senior Naval Officer, British Operated Ports, France. Senior Naval Officer, Cyrenaica.Senior Naval Officer, Dodecanese.Senior Naval Officer, Eastern Sicily.Senior Naval Officer, Landings.Senior Naval Officer, Levant Area.Senior Naval Officer, Persian Gulf.

. . . Senior Naval Officer, Red Sea and Canal Area.Senior Naval Officer, Western Italy .Senior Naval Representative.

... Superintending Naval Store Officer.Supply Officer.Staff Officer, Air (in a Flagship).

... Senior Officer, Assault Group.Senior Officer, Assault ■Ships and Craft (India).Senior Officer, Administration and Build-up Group.

{Send ordinary course.Senior Officer Chasseurs.

... Senior Officer (Dutch) Ships.Special Operations Executive.Senior Officer, E ast Indies Fleet, Delhi.

... Senior Officer, E ast Indies Fleet, Kandy.Superintendent, Admiralty Undex Works, Rosyth.

... Senior Officer, Ferry Craft.

... Senior Officer, Fleet Signal School.

... Senior Officer Force (V).

{Small Operations Group (East Indies Station).Special Operations Group.


S.O.(I) ............ Staff Officer, Intelligence.S.O.I.S.......................... Senior Officer, Inshore Squadron.S.O.K........................... Norwegian Mission, Cockspur Street, S.W .l.S.O.L.C........................ Staff Officer, Landing Craft.S.O.L.S.T.G................ Senior Officer, Landing Ship and Tank Group.S.O.M.B.B................... / Senior Officer, Motor Boat Base.

^Senior Officer, Mobile Balloon Barrage.S.O.N.A.S.(N.I.) ... Senior Officer, Naval Air Stations (Northern Ireland).S.0.N.A.S.(0) Senior Officer, Naval Air Stations (Orkneys).S.O.N.D....................... Senior Officer, Naval Detachment.S.O.O.................. Staff Officer for Operational Duties.S.O.(P) ............... Staff Officer (Plans).SOP. (A) ............... U.S. Naval Senior Officer Present Afloat.S.O.P.L........................ Staff Officer, Polish Liaison.S.O.R.M....................... Senior Officer, Royal Marines.S.O.R.N.E.(I) Senior Officer, Royal Naval Establishments (India)S.O.R.T.F.................... Senior Officer, R adar Training Flotilla.S.O.(S) ................ Assistant Supply Officer (Stores).S.O.S.G........................ Senior Officer, Support Group.S.O.S./M....................... Senior Officer, Submarine.S.O.(Sy.) ............... Staff Officer, Security.S.O.T.L.D.F. Senior Officer, Thames Local Defence Flotilla.S.O.V.M.R.F. Senior Officer, Vernon Mine Recovery Flotilla.S.P. ................ Signal Publication.S / P . ............................ Signalling Projector.S.P.A............................ South Pacific Area.S.P.C.O.S.A................. Spare P art Control Offices South Africa.S.P.D.C........................ Spare Parts Distributing Centre.SPENAVO.................. Special Naval Observer, London (U.S.).S.P.N.O.C.D. Senior Polish Naval Officer, Clyde District.S.R................................ Seaplane Reconna issance Aircraft.S.R.A.R.N.A.H. ... Surgeon R ear Admiral, R.N. Auxiliary Hospital.S.R.E........................... Sound Reproduction Equipment.S.R.M.O....................... Squadron Royal Marine Officer.S.R.N.O....................... Senior Royal Navy Officer.S.R.O........................... Squadron P. & R.T. Officer.S.R.R.D....................... Special Repair Ratings (Dockyard).S.R.U........................... Sea Reconnaissance Unit.S/S................................ Sound Signalling.ss.......................... Submarine (U.S.).S.S.E............................ Superintendent, Admiralty Signal Establishment.s.s.o...................... Staff/Squadron Supply Officer.S.S./T........................... Super Sonic Telegraphy.S.S.T.O......................... Superintending Sea Transport Officer.s.s.u...................... Squadron Servicing U nit (Aircraft).S/T................... Sonic Telegraphy.S.T.E............................ Stokers’ Training Establishment.S.T.E.D........................ Superintendent of Torpedo Experiment and Design.S.T.K.......................... . Special Tanker.S.T.O............................ Sea Transport Officer.S.T.O. i/c..................... Sea Transport Officer-in-Charge.St. P.O......................... Stores P etty Officer.S.T.U............................ Service Trials Unit.S.T.V............................ Steam Tank Vessel.SUB. ............... Submarine (U.S.).S.U.P.E.G................... Eastern Group Supply Council (IN Signals).Supt. A.R.Y. Superintendent, Aircraft Repair Yard.Surg. (Lieut., etc.) ... Surgeon (Lieutenant, etc.).Surg. (Lieut., etc.)D. Surgeon {Lieutenant, etc.) for D ental Duties.S.V.D........................... Superintendent, Victualling Depot.S.V.S.O........................ Superintending Victualling Store Officer.S.V.T.O. (M. & M./S) Senior Vernon Trials Officer (M. and M/S).S.V.Y........................... Superintendent Victualling Yard.S.W.A........................... South West Atlantic Area.S.W.D.......................... Supt. of Welding Development.


S.W.D.(N) (M.S.) ... Supt. of Welding Development (Naval) (Merchant Shipping).

s .w .o . Squadron W /T Officer.S.W.P.A. ... ... South West Pacific Area.SWPAKFRON. South-west Pacific Sea Frontier.

T. i ....................... /Torpedo.■ "\T ra iner Aircraft.

T/A................... ... Torpedo Aircraft.T.A.B. ... Transportable Air Base.TA..G. ... Telegraphist Air Gunner.T.A.G.S. ... Telegraphist Air Gunners’ School.T.A.M.Y. ... ... Transportable Aircraft Maintenance Yards.T.A.S.C. ... Training Area Selection Committee.T.A.T. Torpedo Attack Teacher.T.B................... ... Torpedo Bomber Aircraft.T.B.R. Torpedo Bomber Reconnaissance Aircraft.T.C.O. ... Torpedo Control Officer.T.C.U. ... Torpedo Calculating Unit.T .D ................... ... Torpedo Dive Bomber Aircraft.T.D.D.E.E. ... ... Tank Design Development Experimental Establish

ment.T.D.O. ... Torpedo Defence Officer.T .E.E. ... Torpedo Experimental Establishment.T.E.O. ... Torpedo Engineer Officer.

T .F ...................f Task Force.

Torpedo Fighter Aircraft.T.F.C. Time of 1st Call (U.S.).T.F.O. ... Torpedo Firing Officer.T.G................... ... Task Group.T.H.I. ... Time Handed In.T.H.V. , . . Trinity House Vessel.T.I.O. Target Indication Officer.T.I.R. ... Target Indication Room.T.I.U. Target Indication Unit.

T.O.................../T ranspo rt Officer.

" ' i Torpedo Officer.

T.O.D.[Tim e of Despatch.

\T im e of Delivery (U.S.).T.O.O. ... Time of Origin.TOPSEC. ... ... Top Secret.T.O.R. ... Time of Receipt.TORP. ... Torpedo (U.S.).T /P................... ... Teleprinter.T .P.I. Target Position Indicator.T .R ................... ... Torpedo Reconnaissance Aircraft.T .R.E. ... Telecommunications Research Establishment.T.R.U. ... Travelling Recording Unit (Aircraft).T.R.S.B. ... Torpedo Recovery Safety Boats.T.R.V. Torpedo Recovery Vessel.T.S.................... ... Transmitting Station (Gunnery).T.S.D.S. ... Two Speed Destroyer Sweep.T.S.V. ... Torpedo School Vessel.T.T................... ... Target Towing Aircraft.T.T.S.B. Target Towing Safety Boats.

T .U ................../T a s k Unit.

■" /T actica l Urgency.Ü. U.K.A.L.M. ... ... U.K. Air Liaison Mission.

U.K.A.R. ... ... United Kingdom Approach Routes.TJ.K.C.C. ... ... United Kingdom Commercial Corporation.U.K.S.A. ... ... U.K. Shipping Adviser.URDIS. ... Your despatch (U.S.).U.S................... ... U nited States (of America) (U.S.).U.S.A.D. ... ... United States Army Depot (or Sub-Depot).U.S.A. ... United States Army (U.S.).


U .S .A .H .S ................. United States Hospital Ship.U.S.A.T....................... United States Army Transport (U.S.).U.S.C.G.C.................... U.S. Coast Guard Cutter.U.S.E.D....................... United States Engineering Dept.U.S.L.O.N................... U.S. Naval Senior Line Officer a t ------.U.S.M.C....................... U.S. Marine Corps.U.S.M.N.A.M. U.S. Military, Naval and Air Mission.U.S.N........................... United States Navy.U.S.N.A.A.B. U.S. Naval Advanced Amphibious Base.U.S.N.A.A.T.B. U.S. Naval Advanced Amphibious Training Base,U.S.N.A.T.B. U.S. Naval Amphibious Training Sub. Base.U.S.N.A.A.T.S.B. ... U.S. Naval Advanced Amphibious Training Sub. Base.U S.N.A.M.S.B. ... U.S. Naval Advanced Maintenance Sub. Base.U.S.NAV.P.O. U.S. Naval Port Officers.U.S.N.L.O.S. U.S. Naval Liaison Officers.U.S.N.S.D. ... U.S. Naval Stores and Spare Parts Depot.U.S.N.T.S.D. U.S. Navy Technical Division.U .S.R.0....................... United States Routing Officers.u.s.s...................... U.S. Man of War.U.S. Ship ... U.S. Ship.U.W.S.S....................... Under W ater Swim Suits.V.A. (No.) ............... Vice-Admiral (No.) B attle Squadron.V.A.C. (Fleet or Vice-Admiral Commanding (Fleet or Squadron).

Sqdn.)V.A. (D) ................ Vice Admiral (Destroyers).V.A.D........................... Voluntary Aid Detachment .V.A.M.......................... Vice Admiral, Malta.V.A. (Q) B.P.F. Vice Admiral (Q), British Pacific Fleet.Vice C.N.O.................. Vice Chief of Naval Operations (U.S.).VIS............................... Visibility (U.S.).VH/F............................ Very High Frequency.VL/F............................ Very Low Frequency.V.L.R........................... Very Long Range.V/S................................ Visual Signalling.V.S.C............................ Victualling Store Carrier.V.S.I.S......................... Victualling Store Issuing Ship.V.S.O............................ Victualling Store Officer.V./T.............................. Visual Telegraphy (used in Army instead of V/S).V.T.O........................... Visual Training Officer.W.A.............................. Western Approaches.W.Af. ................ West Africa.W .At............................ W estem Atlantic.Wa/T............................ Warning Telephone.W.A.T.U...................... Western Approaches Tactical Unit.W.B.B.V...................... C.O. of Waterborne Balloon Barrage Vessels.W.C.O.......................... W ar Cabinet Offices.W.Ck.O........................ W arrant Cookery Officer.W.Ct.O......................... W arrant Catering Officer.W.D..............................>| f War Dept.

[_ W ar Diary.W.D.V..........................-1f War Dept. Vessel

l_ Wreck Dispersal Vessel.WEA............................ W eather (U.S.).W .E.F.......................... Western Escort Force.W.E.L.S.O.................. Welfare Services Officer.W .E.S........................... Warship Electrical Superintendent.WESEAFRON. ... Western Sea Frontier (U.S.).WESTOMP. West Ocean Meeting Point.W.I.M.S....................... W artime Instructions for Merchant Ships.w.o........................ W ar Office.W.P.P.S....................... Western Patrol Periodical Signal.W.P.S........................... Warship Production Superintendent.

Women’s Royal Naval Service.W.R.N.S......................W.S.A........................... W ar Shipping Administration.W.S.O........................... W arrant Stores Officer.


W /T ............................ ,. Wireless Telegraphy.W/T. Bd..................... . Wireless Telegraphy Board.W.T.C.S...................... . W ar Transport Committee Suez.W.Tel. . W arrant Telegraphist.W/T.O........................ . W/T. Officer.W.T.V......................... . W ater Tank Vessel.W.U.B........................ . Working Up Base.W.W.O....................... W arrant W riter Officer.X . and D. Flot. . Experiment and Development Flotilla (Landing Crafi)X.D.O......................... . Extended Defence Officer.Y.A.............................. . Ashlighter (U.S.).YAG............................ . District Auxiliary Vessel; Miscellaneous (U.S.).Y.C. / Open Lighter (U.S.)

' \ Yard Craft.Y.C.D.......................... . Fuelling Barge.Y.C.F.......................... . Car Float (U.S.).Y.C.K......................... . Open Cargo Lighter (U.S.).Y.C.O.......................... . Fuelling Barge (U.S.).Y.C.V.......................... . Aircraft Transportation Lighter (U.S.).Y.D............................. . Floating Derricks (U.S.).Y.D.G.......................... . Degaussing Vessels (U.S.).Y.D.T......................... .. Diving Tender (U.S.).Y .E .............................. . Ammunition Lighter (U.S.).Y F............................... .. Covered Lighter (U.S.).Y .F.B............................ Ferry Boats and Launches (U.S.).Y.F.C........................... Car Floats (U.S.).Y .F.D ........................... Y ard Floating Dock (U.S.).Y.F.T ................ Torpedo Transportation Lighter (U.S.).Y.G............................... Garbage Lighter (U.S.).Y .H.B.......................... House Boats (U.S.).Y .H .T......................... Scows, H eating (U.S.).Y.L.A........................... Open Landing Lighter (U.S.).Y.M............................. Dredges (U.S.).Y.M.S........................... f Y. Class Minesweeper.

"^Minesweeper (Motor) (U.S.).Y M T............................ Motor Tug (U.S.).Y.N............................... N et Tender (U.S.).Y N g ............................ Gate Vessel (U.S.).Y N T ............................ Net Tender (Tug class) (U.S.).YO ............................ Fuel Oil Barge (U.S.).Y O G ............................ Gasoline Barge/Tanker (U.S.).Y.O.S............................ Oil Storage Barges (U.S.).Y .P ............................... Patrol Vessel District (U.S.).Y .P.D ........................... Floating Pile Drivers (U.S.).Y .P.K .......................... Pontoon Storage Barges (U.S.).Y .R.............................. Floating Workshops (U.S.).Y.R.C.......................... Submarine Rescue Chamber.Y.R.D. (H )................ Work Shops, Floating,Drydock (Hull) (U.S.).Y.R.D. (M )................ Work Shops, Floating, Drydock (Machinery) (U.S.).Y.S. J Yugo-Slav Ship.

\ Stevedoring Barges (U.S.).Y.S.D........................... Seaplane Wrecking Derricks (U.S.).Y .S.P........................... Salvage Pontoons (U.S.).Y.S.R........................... Sludge Removal Barge (U.S.).Y.T.B........................... H arbour Tug, Big (U.S.).Y .T.L........................... H arbour Tug, Little (U.S.).Y.T.M........................... H arbour Tug, Medium.Y.T.T........................... Torpedo Testing Barge.Y.W. ................ W ater Barges (U.S.).

(A.F.O. 6295/43, and C.A.F.O. 1101/45.) (A.F.O. 6783/44 is cancelled.)

(71799) Wt. 8021/2275 20,000 7/45 Hw. G.338/10

Not to he communicated to anyone outside H.M. …...3883 2 3833.—Abbreviated Titles and other Abbreviations in Common Use (M. 01364/45.—5 'Jul. 1945.) The following list of abbreviations

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