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

An indentation of the coastline between two headlands.

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

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

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

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 ...

Is a technique for predicting whether water will tend to dissolve or precipitate calcium carbonate. If the water precipitates calcium carbonate, scale forming may result. If the water dissolves calcium carbonate, it has a corrosive tendency.

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 ...

(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.

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 ...

An offer to sell goods at a stated price and under stated terms.

A distinctive fixed reference point that can be used for navigation.

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

Abbreviation for "Not Elsewhere Specified."

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.

A track or groove in the back of the mast to which the sail is attached by means of lugs or the bolt rope.

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

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

Fixed ports that do not open which are placed in the deck or cabin to admit light.