The leading ship, or ships, in a fleet or squadron.

[meaning]

is the ratio of the actual velocity at a given point to the velocity of sound in the same gas at the conditions existing at this point. These are known as local conditions.

[meaning]

A device attached to a safety or safety relief valve that prevents it from opening at the set pressure.

A gauge that measures engine revolutions per minute.

Usually the forward berth of the boat, located in the bow

Document that identifies goods imported when placed in a bonded warehouse. The duty is not imposed on the products while in the warehouse but will be collected when they are withdrawn for delivery or consumption.

The shape of a sail, with regard to its efficiency. Controls such as the cunningham, boom vang, outhaul, traveler, halyards, leech line, sheets, and the bend of the mainmast all can affect sail shape. Also sail trim.

[meaning]

Officer's recreation area.

The situation of two vessels, lying alongside one another, so near that their yard-arms cross or touch.

[meaning]

The control ring in a valve which surrounds the seat, used to control pre open and blow down.

A two masted sailboat with the shorter mizzen mast placed aft of the rudder post. A ketch is similar, but the mizzen mast is forward of the rudder post.

The kelvin unit of thermodynamic temperature, is the fraction 1/273,16 of the thermodynamic temperature of the triple point of water. The triple point of water is the equilibrium temperature (o,01

Cargo Not Otherwise Specified. Usually the rate entry in a tariff that can apply to commodities not covered under a specific item or subitem in the applicable tariff.

Compressors that operate with an intake pressure below atmospheric and discharge pressure usually atmospheric or slightly higher.

A multilateral maritime treaty adopted in 1921 (at The Hague, Netherlands). Standardizes liability of an international carrier under the Ocean B/L. Establishes a legal "floor" for B/L. See COGSA

A document issued by the U.S. government; authorizes the export of commodities for which written authorization is required by law.