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Unformatted text preview: f paint to protect steel.
Boat Deck ----A deck on which lifeboats are
kept. Bilge blocks supporting a vessel on a drydock. Body Plan ----A drawing which shows frame
lines in elevation. The body plan is made in two
parts. The right-hand part is a view looking
directly aft at the for'd port side of moulded
surface, while the. left-hand part is a view
looking directly forward at the after half of the
port side. This arrangement prevents the frame
lines at the after end from obliterating or fouling
the frame lines at the forward end. This view
shows buttocks and waterlines straight, while the
frame lines appear in their true shape.
Boiler ----Container in which water is heated to
Boiler Chocks ----Stay braces which prevent
fore and aft movement of boilers. More bilge blocks.
Bilge ----A fore and aft member fitted to the
outside of the shell plating along the bilge, to
prevent excessive rolling of the ship.
Bilge Pump ----Pump for removing bilge water.
Bilge Strake ----Course of plates at the bilge.
Bilge Water ----Water in ship due to leaks,
sweat, etc. Boiler Foundation ----A support for a boiler.
Bollard ----A single tie post (see bitt).
Booby Hatch ----A watertight covering over a
deck opening, which is used for a stairway or
Boom ----A long, round, heavy spar, pivoted at
one end, usually used for handling cargo, etc. E6002 – Ship Terms & Definitions p. 4 © C.G.Daley Here is a davit, or a
cargo hose boom. This one design of several
different types of devices designed to assist in
lifting heavy items. The King Post or Sampson
Post or Stanchion is the vertical pipe on the
right side of the picture. The boom (spar)
extends to the left, and is supported by a boom
rest near the tip, and the boom socket (step) at
the base of the king post.
Boom Rest ----A support for a boom when the
boom is not in use.
Boom Step ----A socket for end of boom.
Bosom Piece ----A short piece of angle riveted
over a butt joint of two angles, a butt strap for
angle bars; a splice piece.
Boss ----The curved swelling portion of the
ship's hull around the propeller shaft. Propeller on a river towboat. This one has 4
blades and is designed for power rather than
speed. 4 blade propellers have less vibration
than 2 or 3 blade propellers, benefiting the crew.
Boss Frame ----A hull frame which is bent for
clearing propeller shaft tube boss
Boss Plate ----A shell plate covering the curved
portion of hull where the propeller shaft passes
Bow ----The forward end of a vessel. (Usually
the pointed end.) Here is the bow of a tank barge on drydock.
Propeller on a ferry. Most US ferry's have
identical propellers on both ends. This way they
do not have to back up to get into the slip,
making it much easier for the vehicles to drive
on and off. The boss and the oxter plate is here
somewhere. Bowsprit --A spar projecting forward from the
bow of a vessel used to attach sails and stays.
Bracket ----A triangular plate used to connect
rigidly two or more parts, such as a deck beam
to a frame, a frame to a margin plate, etc.
Braze ----To heat and join by means of hard
solder (spelter). This may be brass, bronze, or
Breakwater ----A braced guard plate which
prevents solid water from sweeping the decks. E6002 – Ship Terms & Definitions p. 5 © C.G.Daley Breast Cap ----Small plate on top of bulwark, at
stem of vessel to stiffen bulwark. Bunker ----A compartment used for the stowage
of coal or other fuel. Breast Hook ----A triangular-shaped plate
extending horizontally across the bow behind
the stem, stiffening the stringers and stem. Buoyancy ----Ability to float; lifting power
when immersed. Bridge, Navigating ----A deck from which the
ship is navigated.
Bridge Deck ----A deck of the superstructure
Brow ----A watershed over an airport; a small
inclined runway to allow passage of trucks over
hatch coaming, or through bulkhead door, etc.;
Buck frame ----In a double skin tank barge,
these frames act as spacers in the void tanks. A
4'6" wide void might have 2 vertical 8" channel
iron with 3" x 3" x 5/16" angle iron between.
Also called a transverse truss.
Building Slip ----A place where the ship is built;
Bulb Angle ----An angle shape, which is
reinforced at one toe.
Bulb Plate ----A narrow plate reinforced on one
Bulb Tee ----A Tee bar with toe of web
Bulkhead ----A vertical partition corresponding
to the wall of a room, extending either
athwartships or fore and aft. A steel partition in
a ship. The vertical partitions that divide the hull
into separate compartments are called
bulkheads. Some are watertight. These watertight bulkheads are so arranged that in case of
accident at sea, water would be confined to one
compartment only. The collision bulkhead in the
front end is constructed to withstand heavy
strain and shock in case the bow be staved in.
Bulkhead Sluice ----A small opening in a
watertight bulkhead which can be opened or
closed from the deck above.
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This document was uploaded on 03/06/2014 for the course ENG 5003 at Memorial University.
- Winter '14