The Analysis menu is used to specify the conditions for the analysis and calculate the vessel's seakeeping characteristics.

Allows the user to select which surfaces should be measured, the number of sections to use (typically 10–30 sections should be adequate) and whether to trim the surfaces. This should be checked if the design is constructed from trimmed surfaces.

The conformal mappings are automatically calculated immediately after the hull has been measured.

Allows the user to specify whether the design should be treated as a monohull or a demihull of a catamaran; if the latter is specified, the demihull separation must also be given.

Input the pitch and roll gyradii of the hull in percentage of overall length and beam respectively. Typical values are pitch gyradius 25%; roll gyradius 35%–40%.

The roll response is calculated based on the vessel's hydrostatic properties, the roll gyradius and the roll damping. The value of total non-dimensional roll damping may be input here. See Setting Damping Factors on page 16.

The water density is specified here.

The number of frequency steps may be changed here. This specifies the points at which the vessel's RAOs are calculated. For spectral integrations, a much larger number of points are used, however the RAOs used are based on the specified points, extra points are linearly interpolated as required.

There are various options to control the exact formulation and solution of the strip theory problem. Options for controlling the analysis may be specified here.

Activates calculation of the seakeeping data (RAOs, response spectra and significant motions).