The forward motion of a boat. Opposite of sternway.

Related Terms

COMPRESSOR

A device which converts mechanical force and motion into pneumatic flow power.

JOURNAL BEARING

A sliding type of bearing having either rotating or oscillatory motion and in conjunction with which a journal operates. In a full or sleeve type journal bearing, the bearing surface is 360° in extent. In a partial bearing, the bearing surface is less than 360° in extent, i.e., 150°, 120°, etc.

HARMONIC MOTION

The projection of circular motion on a diameter of the circle of such motion. Simple harmonic motion is produced if the circular motion is of constant speed. The combination of two or more simple harmonic motions results in compound harmonic motion.

DUNNAGE

Cushioning material placed among cargo to prevent their motion

FORWARD

The front part of a ship.

HYDRODYNAMIC LUBRICATION

A system of lubrication in which the shape and relative motion of the sliding surfaces causes the formation of a fluid film having sufficient pressure to separate the surfaces.

FRETTING

Wear phenomena taking place between two surfaces having oscillatory relative motion of small amplitude.

PUMP

A device which converts mechanical force and motion into hydraulic fluid power.

DELAMINATION WEAR

A complex wear process where a machine surface is peeled away or otherwise removed by forces of another surface acting on it in a sliding motion.

TRIBOLOGY

The science and technology of interacting surfaces in relative motion, including the study of lubrication, friction and wear. Tribological wear is wear that occurs as a result of relative motion at the surface.

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