In the direction of the vessel's head. Wind ahead is from the direction toward which the vessel's head points. In a forward direction.

A device for optimizing the anaerobic digestion of biomass and/or animal manure, and possibly to recover biogas for energy production. Digester types include batch, complete mix, continuous flow (horizontal or plug-flow, multiple-tank, and vertical tank), ...

The angle a celestial body makes with the horizon.

Occurs in the base metal adjacent to weldments due to high through-thickness strains introduced by weld metal shrinkage in highly restrained joints. Tearing occurs by decohesion and linking along the working direction of the base metal; cracks usually run ...

An accelerated corrosion test for electrodeposits.

Hazardous Materials

London Interbank Offered Rate

A pressure-operated switching device used in a radiosonde. In operation, the expansion of an aneroid capsule causes an electrical contact to scan a radiosonde commutator composed of conductors separated by insulators.

World Maritime University

Coast Guard's Automated Mutual-Assistance Vessel Rescue System

Enhanced Group Call

(See EUVROU.)

A vessel or tank where heat produced from the combustion of fuels such as natural gas, fuel oil, or coal is used to generate hot water or steam for applications ranging from building space heating to electric power production or industrial process heat.

The rope which goes round a sail, and to which the canvass is sewed.

Transportation Research Board

A cell produces electric energy by the galvanic oxidation of carbon; commonly used in household appliances.

Oil Pollution Act of 1990 (USA)

Original Equipment Manufacturer. An original equipment manufacturer, or OEM, manufactures products or components that are purchased by another company and retailed under that purchasing company's brand name.[OEM refers to the company that originally ma ...

An instrument for measuring the pressure of the atmosphere. The two principle types are aneroid and mercurial.

A turbine in which the flow of a steam or gas is essentially parallel to the rotor axis.