General Arrangement Plan
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Transcript General Arrangement Plan
General Arrangement Plan
Lesson 2
General Arrangement Plan
depicts the division and arrangement of the ship
side view
plan views of the most important decks
cross-sections
The views and sections display:
division into compartments (tanks, engine room, holds)
location of bulkheads
location and arrangement of superstructure
parts of the equipment (winches, loading gear, bow thruster, life boats)
Basic data included in the GAP:
dimensions
volumes of the holds
tonnage
deadweight
engine power
speed
class
a. upper deck or main deck
b. forecastle
c. tweendeck
d. tanktop
e. upper hold and lower hold
f. peak tank
g. chain locker
h. bosun’s locker
i. collision bulkheads
j. engine room
k. steering machinery
l. double bottom
m. cofferdams
n. superstructure
a. Upper deck or main deck
the principal deck of a vessel; in some ships the highest deck
of the hull, usually but not always the weather deck; in sailing
warships often a deck under the upper deck
b. Forecastle
foremost part of the upper deck
usually raised above the main deck
c. Tweendeck
space between decks – intermediate deck
divides the vessel into separate holds
d. Tanktop
inside bottom of the vessel
the plating forming the inner bottom of a ship hull
e. Upper hold / Lower hold
spaces that contain the cargoes
f. Peak tank
foremost and aftermost spaces of the vessel
serve as storage spaces for ballast water
capable of absorbing part of the impact forces that are
released in case of a collision
g. Chain locker
storage for anchor chain
h. Bosun’s locker
= Boatswain’s locker
serves as storage for ropes, paint and dunnage
i. Collision bulkheads
foremost major watertight bulkhead
prevent the vessel from flooding in case of collision with
another vessel
fireproof
j. Engine room
= machinery space
watertight compartment
situated over the after peaktank
houses the main and auxiliary machinery
j. Engine room
on a large percentage of vessels engine room is located near
the bottom, and at the aft
usually comprises few compartments - this design maximizes
the cargo carrying capacity of the vessel and situates the
prime mover close to the propeller, minimizing equipment
cost and problems posed from long shaft lines
k. Steering machinery
gives the power for moving the rudder
l. Double bottom
provides strength and storage space for fuel, lubricating oil,
fresh water, salt (ballast) water and potable water
m. Cofferdams
empty spaces / longitudinal and transverse separations
between tanks
prevent leaking of liquids from one double bottom tank into
another
n. Superstructure
accommodation for the crew and passengers
messroom, galley, pantry
Shipboard terminology for position in a
ship
COLLOQUIAL TERM
fore end
after end
midships part
right side
left side
in front of
behind
across (the ship)
from stem to stern
M.E.TERM
forward
aft
amidships
starboard s.
port s.
before / forward of
abaft / aft of
athwartships
fore and aft