A condition where the particles (dust) becomes embedded in the fabric filter over time and are not removed by the bag cleaning process.

The ability of a boat to keep from being moved sideways by the wind. Keels, daggerboards, centerboards, and leeboards are all used to improve a boat's lateral resistance.

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.

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

Navigable channel.

Annual publication of astronomical data for the use of navigators.

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 ...

The framework of timber, etc., on which a vessel is built, from which she is launched into the water.

The fitting in the bottom of the boat in which the bottom or heel if the mast sits.

On square-rigged ships, the lines which are lead from the masthead to the ends of the yards to support them.

An enterprise in which there is a risk of loss.

Kilo or metric ton. 1,000 Kilos or 2,204.6 pounds.

Also VMG. Actual boat speed after adjusting for such factors as current and leeway.

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

A sprocket wheel on the windlass for taking links of the chain cable.

Warehouse Withdrawal for Transportation Immediate Exportation.Allows merchandise that has been withdrawn from a bonded warehouse at one U.S. port to be exported from the same port exported without paying duty.

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.

This is a factor expressing deviation of a gas from perfect gas laws.

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

Open Shelter Deck ship.