136 BOAT BUILDER'S HANDBOOK Craft Print Project No. 64 Its design is versatile enough to permit the use of inboards, outboards or sails as power, but Sea Skiff is first and foremost a fisher. SEA SKIFF By WILLIAM D. JACKSON Naval Architect Designed for the man who likes to fish, this sturdy craft can be rowed, powered by an outboard or by an inboard, or driven by the wind S EA SKIFF is quickly built over forms for construction of one or for several boats. It is planked with waterproof plywood and will retain its leakproof qualities even if left to dry in the sun for long periods. An ingenious method of framing makes for a sturdy boat and provides a hull that will give many years of trouble-free service. The general design presents a sturdy skiff that may be used on any waters anywhere. The boat may be rowed, powered with air-cooled inboard motors or outboard engines, or rigged for sailing. As a sailer it is dry, light, and fast in a good breeze. Start construction by obtaining the materials listed in the Materials List. Then saw the form (Fig. 2) to shape and mount it on 2 x 4 legs at a convenient working height. To construct the mould frames, stem and transom (Figs. 3 and 4) accurately, draw full-size paper patterns of these parts, lay your material upon outlines, mark and cut to shape, reassemble on the pattern and fasten. The transom is cut from ¾-in. plywood with a ¾ x 3-in. frame, fastened with #8x1½ fh screws, inserted from the aft side of the transom. Saw the mould frames from 1x6; fasten at chine joints with 3/8-in. plywood gussets. If these moulds are to be used several times, glue and screwfasten the gussets, afterward attaching cross pieces to prevent misalignment. The stem is sawed to shape as shown in Fig. 3. STATEMENT OF USES USES: Seaworthy craft for use on any waters anywhere, for boat liveries as well as for personal use. TYPE: Skiff. LENGTH: 13 ft. 9 in. to outside stem. BEAM: 60 in. SEATING CAPACITY: Five passengers. POWER: Oars, outboard, air-cooled inboard, or sail. Now mount the transom, mould frames and stem on the form and hold in place by bracing. With everything secured, spring a light batten over the framework and mark correct beveling so that plywood will lie evenly and fair at all points. With all parts beveled, cut notches for clamps, chines and keel in all parts. Spring the keel in place and attach to transom, frames and stem notches with two #10x2-in. fh screws at each joint. Be careful not to attach any members to the moulds, as the hull is later to be lifted clear of the form and moulds when planked. Now secure the chines. Fasten both chines simultaneously to prevent wringing framework out of shape. Use one #10x2-in. fh screw at transom joints, bevel the ends to fit the stem and fasten in the same way. If the chines have a tendency to slip off the mould-frame notches, hold temporarily with small angle irons screwed to moulds and chines (see detail, Fig. 2). When hull is planked, simply remove the screws and lift the hull clear. Continue by attaching clamps in
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136 BOAT BUILDER'S HANDBOOK
Craft PrintProject No. 64
Its design is versatileenough to permit the useof inboards, outboards orsails as power, but SeaSkiff is first and foremost
a fisher.
SEA SKIFFBy WILLIAM D. JACKSON
Naval Architect
Designed for the man who likes to fish, this sturdycraft can be rowed, powered by an outboard or
by an inboard, or driven by the wind
SEA SKIFF is quickly built over forms forconstruction of one or for several boats. It isplanked with waterproof plywood and will
retain its leakproof qualities even if left to dryin the sun for long periods. An ingenious methodof framing makes for a sturdy boat and providesa hull that will give many years of trouble-freeservice.
The general design presents a sturdy skiff thatmay be used on any waters anywhere. The boatmay be rowed, powered with air-cooled inboardmotors or outboard engines, or rigged for sailing.As a sailer it is dry, light, and fast in a goodbreeze.
Start construction by obtaining the materialslisted in the Materials List. Then saw the form(Fig. 2) to shape and mount it on 2 x 4 legs at aconvenient working height. To construct themould frames, stem and transom (Figs. 3 and 4)accurately, draw full-size paper patterns of theseparts, lay your material upon outlines, mark andcut to shape, reassemble on the pattern andfasten. The transom is cut from ¾-in. plywoodwith a ¾ x 3-in. frame, fastened with #8x1½ fhscrews, inserted from the aft side of the transom.
Saw the mould frames from 1x6; fasten at chinejoints with 3/8-in. plywood gussets. If thesemoulds are to be used several times, glue andscrewfasten the gussets, afterward attachingcross pieces to prevent misalignment. The stemis sawed to shape as shown in Fig. 3.
STATEMENT OF USESUSES: Seaworthy craft for use on any waters anywhere,
for boat liveries as well as for personal use.
TYPE: Skiff.
LENGTH: 13 ft. 9 in. to outside stem.
BEAM: 60 in.
SEATING CAPACITY: Five passengers.
POWER: Oars, outboard, air-cooled inboard, or sail.
Now mount the transom, mould frames andstem on the form and hold in place by bracing.With everything secured, spring a light battenover the framework and mark correct beveling sothat plywood will lie evenly and fair at all points.
With all parts beveled, cut notches for clamps,chines and keel in all parts. Spring the keel inplace and attach to transom, frames and stemnotches with two #10x2-in. fh screws at eachjoint. Be careful not to attach any members tothe moulds, as the hull is later to be lifted clearof the form and moulds when planked.
Now secure the chines. Fasten both chinessimultaneously to prevent wringing frameworkout of shape. Use one #10x2-in.fh screw attransom joints, bevel the ends to fit the stem andfasten in the same way. If the chines have atendency to slip off the mould-frame notches,hold temporarily with small angle irons screwedto moulds and chines (see detail, Fig. 2). Whenhull is planked, simply remove the screws and liftthe hull clear. Continue by attaching clamps in
BOAT BUILDER'S HANDBOOK 137
similar fashion, fastening at transom and stemwith one #10 x 2-in. fh, screw to each joint.
Trim and fair the entire framework so the ply-wood will lie evenly at all points. Hull may becovered with either full-length or 8-ft. length ply-wood. Using 8-ft. lengths, cover the sides first witha length of plywood clamped in place. Mark andcut to shape. A butt strap ¾ x 4 in. fitted betweenclamps and chines secures the butted joints ofplywood on sides and bottom. Before fasteningthe plywood, coat chines, clamps, transom andstem with Weldwood glue. Place plywood inposition and fasten with #8 x 1-in. fh.screws spaced about 2 in. apart.
With both sides attached, trimedges evenly. Install the skeg (ifyou don't plan on using an inboard)and short keel. The skeg is fittedclosely and held temporarily with afew screws. Later, when the hull isturned over, the skeg is fastenedwith screws from the inside.
Lay 8-ft. lengths of plywood inposition on the bottom, marking andcutting to shape. Before attachingplywood, coat all adjoining surfaceswith Kuhls aviation glue. Lay clothstrips about 1-in. wide on gluedarea, recoat and lay plywood in posi-tion, fastening with #8 x 1-in. fh.screws spaced about 2-in. apart.Cover remainder of bottom similarly
—and don't fasten plywood to moulds.Trim fore end of hull along stem and cover
exposed edges of plywood with an outer stem½ x 1½-in., softened with hot water, bent andscrew-fastened in place.
Now remove the hull from the form and turnit right side up. Seat risers are attached byspringing to sides and securing with #8 x 1-in.fh screws inserted from outside hull.
Fasten ribs in place next. Mark locations onkeel and secure each rib with two #8xl½-in.fh screws. The center of each rib is drilled and
25"NOTCH FORM AND FRAME
41"
38-40"
9½"
NOTCH41" 31½"
4¾"
1x4"C H I N E AND CLAMP
2x4"#7x 3"
4RH.
FRAME
A N G L E IRONHOLDS MEMBERSD U R I N GCONSTRUCTION
1x4" TOHOLDSTEM
FLOOR L I N E
CARRIAGEBOLTS x5"
STEM -2" OAK
1"½"
4
2"
2¼"I"4 ¼"
4"4"
4"
4"3¾"
½"
PLYWOOD
23"
15¾"
SECTION
7"
13½"
24"
24"
4
7"4"
4
3"
ASKEG SEE DETAIL
PLYWOOD
BOTTOM RIBS½ x 1¼" KEEL
x 4"
CHINE¾X 1¾"
¾ x 1¾"
SEAT RISER
SEAT ¾ x 8" (12 WIDTHS)
C L A M P ¾ x 1 ¾ "M O U L D I N G
4¼"
23½"
1 x 6"
MOULD
1 x 6"
MOULDPLYWOODGUSSETT 17½"
1 x 4"1 x 4"
2819¾"
16"
30"
5"1 x 6"1 x 3"
4"
15¾"TRANSOM
AND F R A M E¾"PLYWOOD
PLYWOODGUSSETT
NOTCH
18¼"
MOULD
1 x 4"
1 x 3" 1 x 6"
1 x 6"
2" 23½" 23"
Covering the frame with plywood.
The completed framework.
a galv. shingle nail inserted, clinched on theinside. A little Weldwood glue under each ribwill ensure a rigid job.
Install seats as indicated, fastening them to the
risers with #8 x l¾-in. fhscrews. Cut the breast hookand transom knees to fitand fasten with #10 x 2-in.fh screws. Fasten mould-ings in place with #8 x 1¾-in. fh screws spaced about8 in. apart. Screwfastenfloor boards of 3/8-in. ply-wood or 5/8 x 6-in. boards.Smooth hull and apply oneor two coats of sealer. Fol-low with two coats each ofwhite primer and paint orenamel. If you cover bot-tom with fiber glass (ma-terials and instructions forapplication of this materialare available from Herter'sInc., Waseca, Minnesota),complete f reedom f romworm damage is possible insalt water and strength isgreatly increased in eithersalt or fresh water.
For use of Sea Skiff as asailboat, see Fig. 7 for com-plete details. An air-cooledinboard, such as the 1¾hp Reo Trollabout InboardMarine Engine (WilliamsMarine Co.) or a 3.6 hpClinton engine, may bemounted off center or onthe center line of the boat.With an off-center installa-
tion, the centerboard used in sailing can be leftintact and you can use sail also. You may prefer tomount your engine on center, however, and fore-go sailing equipment. If you mount inboard on
center, move the amid-ships seat forward. TheReo Trollabout comes inkit form (about $100 forfresh water installations,$125 for salt water),with complete instruc-tions for installing. Foruse of Sea Skiff withoutboards, cut out tran-som as indicated in Fig.8, or attach an outboardmotor bracket (such asthat made by the HadleyMfg. Co., 2242 SmeadA v e n u e , T o l e d o 6 ,Ohio), to the transom.
(Note: Possessing theadvantages of greatstrength together withlight weight, and moreeasily built than craft
that follow conventional rules of construction,Sea Skiff, as mentioned earlier, is easily massproduced. Moreover, a set of full-size paper pat-terns—required for one or 100 Sea Skiffs—lendthemselves to rapid mass production.)
MATERIALS LIST—SEA SKIFF
LUMBER REQUIREDSize and DescriptionNo.
2222126
¾ x 1¾" x 14½'¾ x 1¾" x 14½'¾ x 1¾" x 14'7/8 x 4" x 12'¾ x 1½" x 8'¾x 1¼" x 14½'½ x 1¼" x 4½'¾ x 3" x 8'1
1 1¼ x 10" x 3'
11
3
111
2 x 8" x 4'½ x 1½" x 4'
¾ x 8" x 12'
1 x 4" x 12'1 x 6" x 12'2 x 10" x 12'
PLYWOOD REQUIRED41
4 gross6 dozen3 dozen3 dozen1 lb.2
1 lb.paint as neededWeldwood resin glueKuhls aviation glue5/16 x 5" carriage bolts1¼" galv. shingle nails#10 x 2" fh screws1¾" fh screws1½" fh screws1" fh screws
or 5/8 x 6" boardswaste from 3/8" plywood¾ x 24 x 48"3/8 x 4 x 8'
FASTENINGS
Use
clampsseat riserschineskeelsonoutside keelmoldingsribstransom framebreast hook and