Navigation Bridge Systems.

A device used to control the voltage in a fluorescent lamp.

To lay the head yards abox in a square rigged sailing vessel was to lay them square to the foremast in order to heave-to.

Macroscopic progression marks on a fatigue fracture or stress-corrosion cracking surface that indicate successive positions of the advancing crack front. The classic appearance is of irregular elliptical or semielliptical rings, radiating outward from one ...

Any Safe Port in the World

Auxiliary Management Information System.

Hertz

Boiler Heating Surface(combined)

A chemical substance that yields hydroxyl ions (OH ) when dissolved in water. Compare with acid.

Breaks in a coating that extend through to the underlying surface.

The next grade above the beginning grade of ordinary seaman in the deck crew.

Europe Asia Trades Agreement (Conference)

A flexible roll or strip of insulating material in widths suited to standard spacings of building structural members (studs and joists). They are made from glass or rock wool fibers. Blankets are continuous rolls. Batts are pre-cut to four or eight foot l ...

See instrument error, observational error. random error, standard error, systematic error.

A crane with a cantilever which is incapable of luffing. The cargo hook is fixed on the out end of the cantilever or hanged on a movable carriage along it.

Gas Oil

Marine Custody Transfer

Total Observed Volume

A forecast of weather elements of particular interest to aviation; including ceiling, visibility, upper winds, icing, turbulence, precipitation types, and storms.

Device that permits passage between regions of differing air pressures, most often used for passage between atmospheric pressure and chambers in which the air is compressed. A typical modern air lock consists of a cylinder of steel plate with airtight doo ...