A vessel sunk deliberately to block a waterway to prevent the waterwayʹs use by an enemy. |
Related Terms |
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HARBOUR
Protected waterway suitable for vessel mooring. |
FOUL
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BLOCK COEFFICIENT
The ratio of the underwater volume of a ship to the volume of a rectangular block with the same effective lengths, draft and beam |
TWENTY FOOT EQUIVALENT UNIT
A unit of measurement equal to the space occupied by a standard twenty foot container. Used in stating the capacity of container vessel or storage area. One 40 ft. Container is equal to two TEU's. |
BOW LINES
The mooring lines extending from the foremost part of a vessel to the shore usually leading forward preventing movement astern. |
BACK SIPHONAGE
The flowing back of used, contaminated, or polluted water from a plumbing fixture or vessel into the pipe which feeds it; caused by reduced pressure in the pipe. |
INCINERATION AREA
An officially designated offshore area for the burning of chemical waste by specially equipped vessels. The depiction of incineration areas on charts (in conjunction with radio warnings) is necessary to insure that passing vessels do not mistake the burning of waste for a vessel on fire. |
MOLDED_DEPTH
The vertical distance from the molded baseline to the top of the freeboard deck beam at side, measured at midlength of the ship |
CONDUCTIVITY CELL
A glass vessel with two electrodes at a definite distance apart and filled with a solution whose conductivity is to be measured. |
MOORING LINE
A cable or rope used in securing a ship |