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8/8/2019 Navy Gator
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NAVYGATOR
Any navygator vessel can be said to be made up of 4 primary parts:
• A floating structure: HULL
• An energy
source:
POWER
PLANT
• A thrust system: PROPULSION
• A control mechanism: RUDDER
Now let us see them in detail.
HULL
A hull is the watertight body of the vessel. Its primary duty is to provide a waterproof platform to
other components of the vessel. The structure of the hull varies depending on the vessel type. In a
typical modern steel ship, the structure consists of watertight and non‐tight decks, major transverse
and longitudinal
members
called
watertight
bulkheads,
intermediate
members
such
as
girders,
stringers and webs, and minor members called ordinary transverse frames, frames, or longitudinals,
depending on the structural arrangement. The uppermost continuous deck may be called the "upper
deck," "weather deck," "spar deck," "main deck" or simply "deck." The particular name given
depends on the context‐‐the type of ship or boat, the arrangement, or even the area where it sails.
Coming back to our problem, “We require a stable floating structure within the prescribed
dimensions!” This can be achieved in many ways.
• Plastic bottles: They can be cut symmetrically to provide a stable hull.
• Ply wood
along
with
inflated
cycle
tube:
Ply
wood
normally
has
the
tendency
to
sink
(depending on the size) this can be solved by means of inflated cycle tubes. The ply wood
provides superior strength over plastic without loss of buoyancy.
• Sheet metal: Sheet metal when turned into a hull form as shown below provides excellent
strength and stability. Note that slight variations from the hull form can lead to loss of
buoyancy thus floatation is achievable only by means of rigorous experimentation involving
CAD or trial and error techniques.
• Other alternatives include wooden hull, talcum powder tins etc.
Make your hull leak‐proof as leakages reduce your points. This can be done using “M Seal”, “Dr Fix