A device for measuring sea-surface waves. It consists of a weighted pole below which a disk is suspended at a depth sufficiently deep for the wave motion associated with deepwater waves to be negligible. The pole will then remain nearly as if anchored to ...

See: 'State.

An instrument which determines the black-body temperature of a substance by measuring its thermal radiation.

A spar used to prevent the spinnaker guy from fouling on the stanchions.

A rain gauge capable of measuring very small amounts of precipitation. Also called micropluviometer, trace recorder.

Stormy conditions, including rough, high seas and strong winds.

Abbreviation for visual flight rules, but commonly used to refer to the relatively favorable weather and/or flight conditions to which these rules apply.

An industry abbreviation for "Hazardous Material."

A device that measures the intensity of direct beam solar radiation.

AMMONIA (Anhydrous). Gas usually carried by LPG tankers at about -50 deg.c. Lighter than air, it is easily escaping from any openning and be highly dangerous to inhale in great uantity. Reacting violently with water. All degrees centigrade: Boiling point: ...

A projecting aperture at the end of a tube, pipe etc. serving as an outlet for compressed air. Reduces the demand on the compressor by generating the highest thrust and volume for the lowest possible air consumption.

Traffic Separation Scheme

The housing around a motor that supports the active parts and protects them. They come in different varieties (open, protected) depending on the degree of protection required.

A day for general ship cleaning.

(1) Old nickname for a sailor, who would treat his canvas coats and hats with tar as a protection against the weather. (2) The distilled residue of gum extracted from pine trees, used for preserving many things.

Member of a crew who works all day but does not keep the normal watches.

Replenishment at Sea.

A pension plan in which employer and employee pay full rate National Insurance contributions.

In electroplating, a supplementary anode positioned so as to raise the current density on a certain area of the cathode and thus obtain better distribution of plating.

Type of order given.