A metallic structure on which a compressor or other machine is mounted.

To remove from a ship. To remove an item from its place.

An annual publication that contains tidal information and information about the position of the sun, moon, planets and stars. This information is used for celestial navigation.

Cargo thrown overboard in order to lighten the ship and washed ashore.

The ability of a fluid that is insoluble in water to separate from water with which it may be mixed in the form of an emulsion.

A compressor cooled by atmospheric air circulated around the cylinders or casing.

The process of plotting a theoretical position or future position based on advancing from a known position using speed, time, and course, without aid of objects on land, of sights, etc. Term comes from deduced reckoning, abbreviated first to "ded reckonin ...

Abbreviation for "Not Elsewhere Specified."

A device for furnishing fresh air to compartments below deck or exhausting foul air. Construction designed to lead air below decks. May have a cowl, which can be angled into or away from the wind; and may be constructed with baffles, so that water is not ...

(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.

An industry abbreviation for "Hazardous Material."

A metal air-tight tank built into a boat to insure flotation even when the boat is swamped.

A cargo on which the transportation charge is assessed on the basis of weight.

A method of docking with a boat's stern to the dock.

A suitable beach, being steep and sandy, where ships could be careened for cleaning or repair.

Is a measure of the rate of change of viscosity with temperature. Oils with high VI have low viscosity changes.

In the days of tall ships the barometer was a glass vessel with a thin stem. The fluid in the glass (in most cases water) would move up and down the stem as the pressure of the surrounding atmosphere changed. These movements were used to predict changes i ...

An electrical depth sounder or fish finder that uses sound echoes to locate the depth of objects in water. It does so by timing the sound pulses.

Little or no wind and flat seas

The principal sail that is set on the main mast.