A small rail on tables and counters used to keep objects from sliding off when the vessel rolls and pitches.

An opening such as a hole or vent. An opening through which air can pass, or a restricted opening placed in a pipe line to provide a means of controlling or measuring flow.

A compartment having a watertight bulkhead at each end.

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.

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

The behavior of perfect gases, or mixtures thereof, follows a set of laws. Boyle' law, Charle's law, Amonton's law, Dalton's law, Amagat's law, Avogadro's law, Poisson's law.

A day for general ship cleaning.

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

Gross tonnage is the basis on which manning rules and safety regulations are applied, and registration fees are reckoned. Port fees are also often reckoned on the basis of GT and NT. GT and NT are defined according to formulas which take account, among ot ...

(Delivered Ex Quay, [Duty Paid]) (...Named Port of Destination):A Term of Sale which means the DDU term has been fulfilled when the goods have been available to the buyer on the quay (wharf) at the named port of destination, cleared for importation. The s ...

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

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

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

A platform with or without sides, on which a number of packages or pieces may be loaded to facilitate handling by a lift truck.

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

Transportation charge advanced by one carrier to another to be collected by the later carrier from the consignor or consignee.

Warehouse Withdrawal for Transportation Immediate Exportation.Allows merchandise that has been withdrawn from a bonded warehouse at one U.S. port to be exported from the same port exported without paying duty.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

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

see Gybe