Very High Frequency. (30-300 MHz) Designate also the radio communication apparatus using this frequency. It reaches only slightly beyond the horizon, except in favourable circumstances where transmission up to several hundred miles are possible.

Numerous shipments from different shippers to one consignee that are consolidated and treated as a single consignment.

A method of streamflow routing which assumes that storage is a linear function of the weighted flow in the reach and is adaptable to a simple mathematical solution.

Voyage Data Recorder

The turning of the blade of an oar from the vertical to the horizontal while it is being taken aback for the next stroke. This reduces the windage on the blade thus reducing the effort expended.

A hole in a tank, boiler or compartment on a ship, designed to allow the passage of a man for examination, cleaning, and repairs.

The range through which the input may be varied without initiating a response. Usually expressed as a percentage of full-scale range.

The quantity measured by a sound level meter in which the frequency response is weighted according to the A-weighting curve (see IEC publication 651).

In the US, a person's income on which federal income tax is calculated. This is gross income less.

Boards fixed vertically to a boat to prevent leeway

(1) A cathode, usuully corrugated to give variable current densities, that is plated at low current densities to preferentially remove impurities from a plating solution. (2) A substitute cathode that is used during adjustment of operating conditions.

A steam boiler on a ship deck used to supply steam to deck machinery when the main boilers are shut down.

Nautical Institute Headquarters, London

Office of Foreign Assets Control

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A procedure for determining the primary elements in a substance (carbon, hydrogen, oxygen, nitrogen, sulfur, and ash).

Winter North Atlantic

Merchant Marine Personnel Advisory Committee

Permanent Group of Experts (in agreement on subsidies and countervailing measures).

A hygrometer in which the sensitive element is a strand or strands of human hair, the length of which is a function of the relative humidity of the air.