Page 131 - NAVAL SCIENCE 3 TEXTBOOK

136 NAVAL SKILLS

UPPER DECK
r SIGNAL "'DGE
SUPERSTRUCTURE DECKS~
~R:: NAVIGATING 8RIDGE
SECOND DECK 1 ~ "--, FORECASTlE DECK -:.>
MAIN DECK
,.
fAN,~AIL THIRD DECK I
I hi PLATfORM DECK I I--- j
" '-.r-- j
6.

,,~ "I-- J STEM
INNER BOTTOM I
ENGINE RO'OM fLAT HAlf DECK
AfTER PEAK TANK
FIRE ROOM flAT BOTTOM TANK FORWARD PEAK TANK

Decks are named by their position in the ship and their function.

wilter level along the hull of the ship. The vertical dist.lI1ce from The comp;:lrtments of cargo ships. and main storage spaces of
the keel to the waterline is the ship's draft. Freeboard is the distance all ships. are called holds; holds are normally larger in merchant
frOI11 the waterline to the main deck. ships than in naval combatants or civilian passenger ships.
Decks are named by their position in the ship ilnd their func-
Decks and Spaces tions. Decks that extend throughout the ship from side to side ilnd
stem to stern are called colllpictenecks. In Illost ships the uppermost
The "Ooors" of a ship are Ci:lllcd decks. The)' divide the ship into
complete deck is called the mail I rieck. The next complete deck
la)'ers in the same way that Hoors ofa building divide it into stories.
down is the seCOlln neck. and the third the third rieck. and so 011.
Decks help strengthen the hull and form the inner spaces (roOIllS)
In aircraft carriers. the uppermost complete deck is the fligl,t
or compnrflllclltS. The undersurface of each deck forms the over-
deck. from which aircraft take off and land. and their main deck is
head of the spaces below. Sometimes spaces are called rooms, such
the hangar deck below. where aircraft arc stowed ilnd serviced.
as the wardroom (officers' dining room), staterooms (officers' bed-
A partial deck at the bow above the main deck is GlUed the fore-
rooms). and engine rooms. but usuall), they are referred to sim-
enstle neck. Amidships it becomes an IIpper deck. and at the stern it
pi)' as compartments. The dining area for enlisted crew members
is a poop neck. lvlain deck areas between the forecastle and poop
is called the m('5S deck. and their living quarters are called berthillg
decks ;:1re called well necks. Ver), few Navy ships have forecastle and
compartmellts. Officers' living spaces are collectively called officers
poop decks today. but these are often built into merchant ships.
(Ol/Ilfry. l3athroollls on a ship are called "eans. All spaces nboard
A half deck is ony partiol deck betwccn complete decks. Platforlll
a ship are identified by standardized compartment numbers that
decks are partial decks below the lo\\'est compit:te dcck.
locate them and indicate their usc.
SHIPS
BUILT
AFTER
MAR.;49

- - - - - - - - - - - - -..:::: =:"QC
--- --'--
2
_-_-:: ::C
BOILER AND
MACHINERY SPACES _-=::-=-:~::t
·- ______ 7_
'O"UIILE BOTTOMS

The deck numbering system of all U.S. naval ships is standardized to the system shown here. The main deck is always numbered 1. Decks below
are numbered sequentially 2,3, 4, etc., while decks above are ca lled " levels" and are numbered 01, 02, 03, etc.