One quadrillion Btu. (1,000,000,000,000,000 Btu)

pattern barometer-Mercurial barometer with a fixed scale and cistern and which therefore requires only one adjustment before each reading.

Women's International Shipping and Trading Association

Also known as a preferred channel buoy. A red and green horizontally striped buoy used in the United States to mark the separation of a channel into two channels. The preferred channel is indicated by the color of the uppermost stripe. Red on top indicate ...

A method causing a liquid or gas to condense on the surface only of an adsorbing material.

Material placed in a drilled hole to fill space around anodes, vent pipe, and buried components of a cathodic protection system.

In a cathodic protection system, in electrically nonconductive material, such as a coating, plastic sheet or pipe that is placed between an anode and an adjacent cathode to avoid current wastage and to improve current distribution, usually on the cathode.

Floating Dock

In square-rigged vessels, short lines at the lower end of the futtock shrouds used to bring in the shrouds tighter to give room to brace the yards at a sharper angle when sailing close hauled.

(1) Permanently damaging a metal or alloy by heating to cause either incipient melting or intergranular oxidation. See also over-heating. (2) In grinding, getting the work hot enough to cause discoloration or to change the microstructure by tempering or h ...

Special Drawing Rights

A linear imperfection in a crystalline array of atoms. Two basic types are recognized: (1) an edge dislocation corresponds to the row of mismatched atoms along the edge formed by an extra, partial plane of atoms within the body of a crystal; (2) a screw d ...

Navigational Electronic Chart System Association

Office of Foreign Assets Control

Same as balloon cover.

Committee set up by the Bank of International Settlements and based in Basle. It drew up.

A method of predicting heating and/or cooling loads using instantaneous load calculation at different outdoor dry-bulb temperatures, and multiplying the result by the number of hours of occurrence of each temperature.

Line 12 inches or 300 mm long, painted amidships on both sides and parallel to the load lines.

Working Paper

Marine Assistance Request Broadcasts.