Unlit navigational aids for use during the day. They mark a bearing to a channel when they are lined up one above the other. Leading lights are lighted at night and serve the same purpose.

Material that stores energy, although mass will also retain coolness. The thermal storage capacity of a material is a measure of the material's ability to absorb and store heat.

A low headroom space below decks used for provisions or spare parts, or miscellaneous storage.

Standard cubic feet per minute., SCFM or scfm. Flow of free air measured at some reference point and converted to a standard set of reference conditions (e.g., 14.4 psia, 80

Industry-related: A point at which freight moving from one territory to another is interchanged between transportation lines.

Ability of a filter to remove particle matter from an air stream. Measured by comparing concentrate of material upstream and downstream of the filter. Typical particulate sizes range from .3 micron to 50 micron.

A labyrinth type filter having the active surfaces continuously splashed with oil. Most pollutants are absorbed by the oil which when circulated releases its pollutants, which sink by gravity to the bottom of the oil pan.

The area (in sq inches) of the filter element that is exposed to the flow of air or fluid for effective filtering.

Itemized list of commodities with marks/numbers but no cost values indicated.

Atmosphere

To be named or to be nominated. To Be Named. Brokerage and chartering, replaces the name of the ship when it is still unknown.

ACRONYM - non-lubricated compressor.

Ties used to tie up the sails when they are furled to the boom or yards.

Cargo moving under Customs control where duty has not yet been paid.

An order to stop; as, "Avast heaving!"

A short length of line, usually braided or marled, used to temporarily bind the anchor cable to the messenger when the anchor is weighed by hand around the capstan.

Areas of the ocean lying between the mostly westerly winds of the higher latitudes, and the trade winds. These areas usually have prolonged calms, and in the older days of sail it could take quite a while to clear out of this area, by which time the seame ...

A protective cover wrapped around the mast at the deck on a keel stepped boat to prevent water from entering the boat.

Also known as LTL or LCL.