Draining plug hole for a vessel when slipped.



Related Terms

PLUG

1) A tapered cylinder fitting into a hole to seal a compartment. 2) The pattern on which the GRP mould for a hull is laid.

STERN GLAND

A packing which surrounds the propeller shaft as it passes through the vessel's hull and prevents sea water from entering the vessel through the hole in the hull.

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.

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.

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.

FOUL

  1. Having freedom of motion interfered with by collision or entanglement; entangled; the opposite of clear. For instance, a rope is foul when it does not run straight or smoothly, and an anchor is foul when it is caught on an obstruction.
  2. A breach of racing rules.
  3. An area of water treacherous to navigation due to many shallow obstructions such as reefs, sandbars, or many rocks, etc.
  4. Foul the range: To block another vessel from firing her guns at a target.

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

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