BOAT BOOM-A spar swung out from a ship's side
from which boats can be hauled out or made fast.
Permits boats to ride safely alongside a ship while
BOAT CALL-A flag signal used to communicate with
BOAT CHOCK-A deck fitting supporting a boat end
that is resting on deck
BOAT DECK-A partial deck above the main deck,
usually fitted with boat davits or cranes.
BOAT FALLS-The lines used in hoisting or lowering
BOAT GONG-A signal used to indicate departure of
officers boats and the arrival or departure of various
BOAT HOOK-A wooden staff with combined hook,
usually made of brass, to reduce danger of sparks;
used to engage rings, lines, or buoys from the deck
of a small craft, or to push away from any object on
the waters surface.
BOAT SKIDS-Deck fittings designed to hold and
support a boat.
BOATSWAIN -A warrant officer whose major duties
are related to deck and boat seamanship.
BOATSWAIN'S CALL-A tune played on a
boatswain's pipe announcing or calling for a
standard evolution such as meals for the crew, lower
away, and so forth.
BOATSWAIN'S CHAIR-A seat sent aloft or over the
side to facilitate repairs or painting.
BOATSWAIN'S LOCKER-A compartment where
deck gear is stowed.
BOLLARD-A steel or iron post on a dock, pier, or
wharf, used in securing a ship's lines.
BOLO-A nylon line with a lead weight or monkey fist,
thrown from ship to ship or from ship to pier during
underway replenishment evolutions.
BOOT-A newly enlisted marine or sailor. Slang for
BOURRELET-The forward bearing surface of a Navy
gun projectile, machined in a band around its body
to provide support for the projectile in the bore.
BOW-The forward end of a ship or boat.
BOW HOOK-A member of a boat crew who mans the
forward line or boat hook
BOW NUMBER-The hull number of a ship, painted
on the bow. This number gives positive
BREAK-To unfurl a flag quickly. In ship construction,
a change in the contour of a ship's main deck
BREAK OUT-To take out of stock or storage and
prepare for use.
BREAKDOWN LIGHTS-Two vertical red lights on
the highest mast of the ship that denote NOT
BREAST LINE-A mooring line from ship to pier,
perpendicular to the ship's centerline.
BREECH-The opposite end from the muzzle of a gun
where rounds are inserted for firing.
BREECHBLOCK -A device that closes the chamber
of a large gun after loading. In small arms, called a
BRIDGE-A ship's structure, topside and usually
forward, which contains control and visual
communication stations. The underway conning
station on most ships, except in submarines.
BRIGHTWORK -Unpainted and uncovered metal,
generally brass or chrome, that is kept bright by
BULKHEAD -Walls or partitions within a ship,
generally referring to those with structural functions
such as strength and water tightness.
BUOY-A floating object, anchored to the bottom,
indicating a position on the water, to mark an
obstruction or shallow area, or to provide a mooring
for a ship.
CAMEL-A float used as a fender between two ships or
a ship and a pier.
CAPSTAN-The rotating mechanism that raises the
anchor or other heavy weight.
CAPTAIN'S MAST-A hearing held by the
commanding officer whereby the commanding
officer awards punishment, listens to requests, or
commends personnel for meritorious achievements
or special service.
CARGO NET-A square net of line used to transfer case
goods and small cargo.
CARGO PORT-A large opening in the side of a vessel
for removing or loading cargo.