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

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

The principal sail that is set on the main mast.

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.

An order meaning sufficient (enough).

Boards used to close the companionway.

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

A small wooden, metal or plastic insertion at the head of a mainsail.

The average level of the oceans, used when finding water depths or land elevations.

Clauses introduced by charterers based on shortage of delivered cargo because of increased oil prices.

1,000 board feet. One MBM equals 2,265 C.M.

Light, bulky articles.

see Gybe

(1) The distance that the wind and sea has to travel over open water unimpeded by land; the longer the fetch, generally the higher the waves. (2) Also to reach someplace, especially in adverse conditions. When sailing close-hauled, being able to arrive at ...

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

Warehouse Withdrawal for Transportation Immediate Exportation.Allows merchandise that has been withdrawn from a bonded warehouse at one U.S. port to be exported from the same port exported without paying duty.

See Intracoastal Waterway.

A line used for suspending articles.

A naval rank next below that of lieutenant-commander, which is next below that of captain (the equivalent of commander).

The small triangular space found at the intersection of lines of position on a chart when a ship's position is determined by taking three bearings.