Unformatted text preview: lwark ----The ship's side above the weather
Bull Riveting ----Driving rivets by squeezing
them with a high powered air or hydraulic
machine. Butt ----The joint formed when two parts are
placed edge to edge.
Buttock ----A distance from centerline; The
intersection of the moulded surface with a
vertical plane at a given distance from the
centerline of the ship. Buttocks are shown in the
profile in the lines drawing. Shipfitters use a
buttock merely as a distance from the centerline.
Thus, they have buttocks marked on bulkheads,
decks, foundations, etc., for setting and
alignment. The buttocks and the waterlines
which are marked on the steel members for
regulating and setting are usually of some
dimension expressed in even feet. That is, they
would mark the 10'0" W. L. (waterline ) and the
24'0" Btk. (buttock) rather than a 10'7" W.L. or a
Butt Strap ----A small plate used to connect the
two parts of a butt joint by overlapping each; a
Butterworth (™) Gun ----Butterworth is the
name of a company that manufactures automatic
tank wash machines. The machines can be hose
mounted or permanent. The water flowing
through the machine causes the wash nozzles to
Butterworth Hatch ---- An opening on the deck
of a vessel opened when cleaning or ventilating
the tanks. May be round or square, secured by
bolts or dogs.
Button ----A cast or fabricated deck item,
usually round, that is used to thread cables
between vessels when they are made-up. E6002 – Ship Terms & Definitions p. 6 © C.G.Daley (pay) with the pitch and there may not be
Caulker ----One who caulks. A single button. Ceiling Wood ----Sheathing on the tank top,
sides of ship, and bulkheads; used to protect
Center Keelson ----(See vertical keel). Button cluster. Center Line ----The middle line of the ship,
extending from stem to stern . A straight line
running from bow to stern, midway between the
sides of the ship. All transverse horizontal
dimensions are taken from the center line. The
center line as applied to a transverse bulkhead is
a vertical line in the middle of the ship.
Chafing Plate ----A bent plate used in
minimizing chafing of ropes, as at hatches. C Chain Locker ----A compartment in the
forward portion of ship in which anchor chain is
stowed. Camber ----The athwartship rise or crown of a
deck. The curvature of the deck transversely. It
is measured by the difference in height between
the deck at center and the deck at side. Chain Pipe ----A pipe for passage of anchor
chain from deck to chain locker. Cant Frame ----A frame which is not square to
the keel line.
Capstan ----A revolving drum, with vertical
axis, used for heaving in lines.
Cargo ----The freight carried by a ship.
Cargo Battens ----Strips of wood used to keep
cargo away from the steel hull.
Cargo Boom ----A heavy boom used in
Cargo Hatch ----A large opening in a deck
which permits the loading of cargo into holds.
Cargo Port ----An opening in a ship's side used
in loading and unloading cargo.
Casing Bulkheads ----Walls enclosing portion
of vessel, as the boiler room casing. Also a
covering for parts of machinery.
Caulk ----To make a joint watertight. The old
saying 'the devil to pay and a half bucket of
pitch' referred to a very big joint to be caulked Chain Riveting ----Two or more rows of rivets
spaces so that the rivets in one row are opposite
those in an adjacent row.
Chain Stopper ----A device which prevents
anchor chain from running out. It is moved into
position after the anchor has been dropped.
Chamfer ----To cut off the sharp edge of a 90o
corner. To trim to an acute angle.
Channel Iron ----A steel shape commonly used
in vessel construction.
Chart Room ----A small room adjacent to the
Pilot House in which charts and navigating
instruments are located.
Chock ----A heavy fitting through which ropes
or hawsers may be led. A saddle or seat of wood
Chock-Boat ----A cradle or support for a
Chock-Roller ----A chock with a sheave to
prevent chafing of ropes. E6002 – Ship Terms & Definitions p. 7 © C.G.Daley Cleat ----A fitting having two arms or horns
around which ropes may be made fast. Also
called a kevel. A clip on the frames of a ship
used to hold cargo battens in place.
Clinching Pan ----A flat plate for clinching
nails. (Used in the mold loft.)
Coaming ----The vertical boundary of a hatch or
Cofferdam ----A narrow vacant space between
two bulkheads. A double watertight bulkhead.
Collar ----A flanged band or ring. A welded
plate used to close a frame or beam penetration
Collision Bulkhead ----The watertight bulkhead
nearest the bow of a ship; forepeak bulkhead.
Companionway ----A covered stairway leading
downward from an open deck. A series of steps
leading from the deck to a cabin or saloon
below; also, the space occupied by these steps. Counter ----Overhang of the stern of a ship.
Countersink ----To taper a hole for a flush rivet
Cowl ----The hood-...
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- Winter '14
- Nautical terms, Ship construction, stern, Keel, Rudder Stock