Ship Data - Waves

This enables the hydrostatics, stability and longitudinal strength in waves to be calculated. The data on this page, is used as the default for calculations that can use wave data, which are

• Hydrostatics,

• Cross Curves,

• Loading Conditions and

• Deterministic Stability.

you can change the settings for individual calculations.

Wave Type

For still water calculations, you should select None. The two wave type options available are Sinusoidal and Trochoidal.

If either of these are selected the other parameters are required to describe the shape and location of the waves. These are Height (equal to twice the amplitude), Length, distance of Crest from Pivot point (units of all 3 parameters: meters or feet), Direction angle to centerlines (in degrees) and Tolerance (in meters). The tolerance is the maximum error or distance from the true sinusoidal or trochoidal wave, allowed for any point on the wave profile.

This wave data can be subsequently used for assessing the vertical bending moments and shear forces on the hull girder with the vessel statically balanced on either one or two waves, thus producing both hogging and sagging effects, and at a user-specified heading angle, as an addition to the normal still water condition.