heel
Quick Summary
In ship design, "heel" refers to a vessel's tilt to one side, or the extent of that tilt. This sideways inclination is a critical aspect of a ship's static stability. If weights are not precisely distributed, a ship can develop unwanted angles of heel, which can make activities aboard difficult and dangerous by reducing the margin against capsizing.12
During a turn, a ship experiences an outward centrifugal force at its center of gravity and an inward hydrodynamic force below the waterline. This creates a couple that heels the ship outward. The rudder's force can counteract this heel. However, ships with low stability and large rudders can capsize if the rudder angle is suddenly removed, as the outward heel can momentarily increase.3
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shipStatic stability…float at unwanted angles of heel (sideways inclination) and trim (endwise inclination). Nonzero trim angles may lift the tips of propeller blades above the surface, or they may increase the possibility that the bow will slam into waves during heavy weather. Nonzero heel angles (which tend to be much greater…
Read More…float at unwanted angles of heel (sideways inclination) and trim (endwise inclination). Nonzero trim angles may lift the tips of propeller blades above the surface, or they may increase the possibility that the bow will slam into waves during heavy weather. Nonzero heel angles (which tend to be much greater…
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naval architectureHeel when turning…to reduce the angle of heel. Thus, in a steady turn, if the rudder angle is suddenly removed, the outboard heel is momentarily increased. Ships with small metacentric stability and comparatively large rudders have capsized through this cause.
Read More…to reduce the angle of heel. Thus, in a steady turn, if the rudder angle is suddenly removed, the outboard heel is momentarily increased. Ships with small metacentric stability and comparatively large rudders have capsized through this cause.
Read More- naval architectureSituation after damage
Any heel after damage makes a ship vulnerable. Excessive heel may be disastrous, as it was for the Andrea Doria in 1956 and the Costa Concordia in 2012. In a well-designed ship, subdivision is planned to ensure that the ship remains upright, or nearly so, no…
Read MoreAny heel after damage makes a ship vulnerable. Excessive heel may be disastrous, as it was for the Andrea Doria in 1956 and the Costa Concordia in 2012. In a well-designed ship, subdivision is planned to ensure that the ship remains upright, or nearly so, no…
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