The central structural basis of the hull.


Related Terms

ABEAM

On the beam, a relative bearing at right angles to the ship's keel.

ICE KEEL

A downward projecting ridge on the underside of the ICE CANOPY, the counterpart of a RIDGE. An ice keel may extend as much as 50 meters below sea level.

LAYING DOWN

Laying the keel of a ship in a shipyard to begin her construction.

KEELHAUL

A punishment by dragging under keel of ship.

DEADRISE

The design angle of the hull at the keel relative to horizontal when viewing the cross section, or the distance of rise from the keel to a defined point on the hull.

KEELHAULING

A maritime punishment: to punish by dragging under the keel of a ship.

HOGGING

When the peak of a wave is amidships, causing the hull to bend so the ends of the keel are lower than the middle. The opposite of sagging. Also refers to a permanent distortion of the hull in the same manner caused, over time, by the bow and stern of a ship being less buoyant than the midships section. During the Age of Sail, shipwrights employed a number of different designs of braces to stiffen ships' hulls against this warping.

GARBOARD

The strake closest to the keel.

DRAUGHT

The depth of a ship's keel below the waterline.

DEAD RISE

Athwartship vertical rise between the keel and the bilge

Related questions

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