DANGEROUS CARGO
All substances of an inflammable
nature which are liable to spontaneous combustion either in themselves or
when stowed adjacent to other substances and, when mixed with air, are
liable to generate explosive gases or produce suffocation or poisoning or
tainting of foodstuffs.
DANGEROUS
LIQUIDS
Liquids giving
off inflammable vapors.
DAVITS
Two radial cranes on a ship which
hold the lifeboats. They are constructed in such a way as to lower and
lift the lifeboats the easiest way possible and are also unobstructed in
case of an emergency.
DEADFREIGHT
FACTOR
Percentage of a
ship's carrying capacity that is not utilized.
DEADWEIGHT
A common measure of ship carrying
capacity. The number of tons (2240 lbs.) of cargo, stores and bunkers that
a vessel can transport. It is the difference between the number of tons of
water a vessel displaces "light" and the number of tons it displaces "when
submerged to the 'deep load line'." A vessel's cargo capacity is less than
its total deadweight tonnage. The difference in weight between a vessel
when it is fully loaded and when it is empty (in general transportation
terms, the net) measured by the water it displaces. This is the most
common, and useful, measurement for shipping as it measures cargo
capacity.
DECK
GANG
The officers and
seamen comprising the deck department aboard ship. Also called deck crew,
deck department, or just deck.
DECKHAND
Seaman who works on the deck of a
ship and remains in the wheelhouse attending to the orders of the duty
officers during navigation and manoeuvering. He also comes under the
direct orders of the bosun.
DECK LOG
Also called Captain's
Log. A full nautical record of a ship's voyage, written up at the end of
each watch by the deck officer on watch. The principal entries are:
courses steered; distance run; compass variations, sea and weather
conditions; ship's position, principal headlands passed; names of
lookouts, and any unusual position, principal headlands passed; names of
lookouts, and any unusual happenings such as fire, collision, and the
like..
DECK
OFFICER
As
distinguished from engineer officer, refers to all officers who assist the
master in navigating the vessel when at sea, and supervise the handling of
cargo when in port.
DECK
HOUSE
Small
superstructure on the top deck of a vessel which contains the helm and
other navigational instruments.
DEEP SEA
TRADES
The traffic
routes of both cargo and passenger vessels which are regularly engaged on
the high seas or on long voyages.
DEEP
STOWAGE
Any bulk,
bagged or other type of cargo stowed in single hold ships.
DEMISE
CHARTER
See Bareboat
Charter.
DEMURRAGE
A fee levied by the
shipping company upon the port or supplier for not loading or unloading
the vessel by a specified date agreed upon by contract. Usually, assessed
upon a daily basis after the deadline.
DISABLED
SHIP
When a ship is
unable to sail efficiently or in a seaworthy state as a result of engine
trouble, lack of officers or crew, damage to the hull or ship's
gear.
DISCHARGES
An essential document for officers
and seamen as it serves an official certificate confirming sea experience
in the employment for which he was engaged.
DOD
Department of Defense.
DOMESTIC
OFFSHORE TRADES
Domestic shipping routes serving Alaska and non-continental U.S. States
and territories.
DOT
Department of
Transportation.
DOUBLE
BOTTOM
General term for
all watertight spaces contained between the outside bottom plating, the
tank top and the margin plate. The double bottoms are sub-divided into a
number of separate tanks which may contain boiler feed water, drinking
water, fuel oil, ballast, etc.
DRAFT
The depth of a ship in the water.
The vertical distance between the waterline and the keel, in the U.S.
expressed in feet, elsewhere in meters.
DRY
CARGO
Merchandise other
than liquid carried in bulk.
DRY CARGO
SHIP
Vessel which
carriers all merchandise, excluding liquid in bulk.
DRY
DOCK
An enclosed basin
into which a ship is taken for underwater cleaning and repairing. It is
fitted with water tight entrance gates which when closed permit the dock
to be pumped dry.
DUAL PURPOSE
SHIP
Specially
constructed ship able to carry different types of cargoes such as ore
and/or oil.
DUNNAGE
A term applied to loose wood or
other material used in a ship's hold for the protection of
cargo.
DWT
Deadweight
tons.
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