All matter consists of molecules which are in constant motion, but which are held together by molecular forces. In a solid the molecules are closely packed and arranged in such a pattern that the influence of the molecular forces is very strong. This give ...

White-lead and tallow used on standing rigging.

A piece of equipment designed to lift containers by their corner castings.

A small wooden box, with lock and key, in which seamen keep sentimental valuables, stationery, and sundry small stores.

The container of fresh water for drinking purpose used by the crew; formerly it consisted of a cask.

Canvas or wood seat attached a halyard to raise and lower someone to work on the mast

The headway a vessel makes when luffed in the wind; the distance a sailing vessel will shoot up to windward when brought head to head in the act of tacking.

The difference in pressure between the opening pressure and reclose pressure of a valve. May be expressed in percentage of set pressure or "psig".

A draft payable upon presentation to the drawee.

Is the temperature at which moisture begins to condense in a compressed air system.

A sudden squall of wind accompanied by lightning.

Small birds that foretell bad weather and bad luck.

A clumsy and unskilled man.

Fresh bread.

A purchase (block and tackle) for hoisting a boat to its davits.

see Chanty.

A nautical astronomical observation of the sun, moon, or a star, by which means a vessel's position can be determined. The sight was taken with a sextant at a specific time, determined by a chronometer.

freezing of a piston ring in its groove in a piston engine or reciprocating compressor due to heavy deposits in the piston ring zone.

The water level used to record data on a chart. Usually the average low tide water level. It is the level below which depths on a chart are measured, and above which keights of a tide are expressed.

Any bend or hitch which slips as a result of being improperly tied; an improvised knot which is not a recognized maritime knot as used at sea.