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.

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.

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.

Abbreviation for "Not Elsewhere Specified."

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

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.

The principal sail that is set on the main mast.

Indirect heat exchanger designed to transfer heat from combustion gas to the air stream added to the combustion zone.

see Gybe

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

Is one which 1) handles a small constant flow of liquid with the gas; 2) utilizes evaporative (injection) cooling; or 3) circulates a liquid for sealing and/or cooling. The last may or may not be evaporative cooling.

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 ...

After mast on a schooner or sailing ship carrying a spanker; usually the fourth mast of a five or six masted schooner.

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

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

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

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.

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

(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 ...

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