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Athwartship vertical rise between the keel and the bilge



Related Terms

HEIGHT OF TIDE

Vertical distance from the chart sounding datum to the water surface at any stage of the tide. It is positive if the water level is higher than the chart sounding datum. The vertical distance from the chart sounding datum to a high water datum is called RISE OF TIDE.

TIDAL CURRENT

A horizontal movement of the water caused by gravitational interactions between the sun, moon, and earth. The horizontal component of the particulate motion of a tidal wave. Part of the same general movement of the sea that is manifested in the vertical rise and fall, called tide. Also called TIDAL STREAM.

CENTER GIRDER

A vertical plate on the ship's centerline between the flat keel and inner bottom extending the length of the ship. Also called center vertical keel, CVK. Or center keelson.

CENTER VERTICAL KEEL

A vertical plate on the ship's centerline between the flat keel and inner bottom extending the length of the ship. Also called center vertical keel, CVK. Or center keelson.

WEB

Multiple component vertical sections forming a reinforced beam or multiple athwartship sections forming a reinforced frame.

BASELINE

A fore-and-aft reference line at the upper surface of the flat plate keel at the centerline for flush shell plated vessels. Vertical dimensions are measured from a horizontal plane through the baseline, often called the molded baseline.

STATIONARY WAVE

A wave that oscillates without progressing. One-half of such a wave may be illustrated by the oscillation of the water in a pan that has been tilted. Near the axis, which is called the node or nodal line, there is no vertical rise and fall of the water. The ends of the wave are called loops and at these places the vertical rise and fall is at a maximum. The current is maximum near the node and minimum at the loops. The period of a stationary wave depends upon the length and depth of the body of water. A stationary wave may be resolved into two progressive waves of equal amplitude and equal speeds moving in opposite directions. Also called STANDING WAVE.

FLOOR

Vertical transverse plate immediately above the bottom shell plating, often located at every frame, extending from bilge to bilge.

CAMBER

The rise of a deck, athwartship

RISE OF TIDE

Vertical distance from the chart sounding datum to a higher water datum. Mean rise of tide is the height of mean high water above the chart sounding datum. Spring rise and neap rise are the heights of spring high water and neap high water, respectively, above the chart sounding datum; while mean spring rise and mean neap rise are the heights of mean high water springs and mean high water neaps, respectively above the chart sounding datum. Also called TIDAL RISE.

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