TAIL SHAFT
The extreme section at the aft end of a ship's propeller shaft.
TANK-BARGE
A river barge designed for the
carriage of liquid bulk cargoes.
TANK
CLEANING
Removal of all
traces of a cargo from the tanks of a tanker normally by means of high
pressure water jets.
TANKER
A tanker is a bulk carrier designed
to transport liquid cargo, most often petroleum products. Oil tankers vary
in size from small coastal vessels of 1,500 tons deadweight, through
medium-sized ship of 60,000 tons, to the giant VLCCs (very large crude
carriers).
TERRITORIAL
WATERS
That portion of
the sea up to a limited instance which is immediately adjacent to the
shores of any country and over which the sovereignty and exclusive
jurisdiction of that country extend.
T.E.U.
Twenty Foot Equivalent Unit
(containers): A measurement of cargo-carrying capacity on a containership,
referring to a common container size of 20 ft in length.
TOP-OFF
To fill a ship which is already
partly loaded with cargo.
TONNAGE
A quantity of cargo normally
expressed as a number of tons.
TOW
When one or more vessels are being
towed; when a tug is towing one or more floating objects; to pull an
object in the water by means of a rope.
TOWAGE
Charges for the services of tugs
assisting a ship or other vessels in ports or other locations; the act of
towing a ship or other objects from one place to another.
TRIM
The relationship between a ship's
draughts forward and aft.
TI
Transportation Institute, a
non-profit organization devoted to maritime research and
education.
TIME
CHARTER
A form of
charter party wherein owner lets or leases his vessel and crew to the
charterer for a stipulated period of time. The charterer pays for the
bunkers and port charges in addition to the charter hire.
TITLE
XI
A ship financing
guarantee program.
TONNAGE
Deadweight, gross, net,
displacement.
TON
MILE
A measurement used
in the economics of transportation to designate one ton being moved one
mile. This is useful to the shipper because it includes the distance to
move a commodity in the calculation.
TRAMP
SERVICE
Vessels
operating without a fixed itinerary or schedule or charter
contract.
TUG
A small vessel designed
to tow or push large ships or barges. Tugs have powerful diesel engines
and are essential to docks and ports to maneuver large ships into their
berths. Pusher tugs are also used to push enormous trains of barges on the
rivers and inland waterways of the U.S. Oceangoing salvage tugs provide
assistance to ships in distress and engage in such work as towing drilling
rigs and oil production platforms.
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