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Now the ship lay out is finalized, the first analysis, Mass calculation, can be performed. Incidentally, it is always possible to change the values you entered in the previous section. The child entities of Mass calculation are:

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Based on the results of entities Main Dimensions and Hydrostatics (in Ship design | Lay out | Hull), the centre of gravity and volume of the hull is determined. Scroll through the parameter list to see the used relations in the Explanation window. For this simplified ship configurator it is assumed that the mass of the hull can be computed by:

Mass = Weight_volume_factor * Volume

As a user, you only have to provide a weight volume factor. The moments around the X, Y and Z axis are determined by Mass multiplied by respectively COGX, COGY and COGZ.

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The centre of gravity of a deck is based on the given location in your ship design. For this simplified ship configurator, it is assumed that the mass of the decks can be computed by:

Mass = Weight_area_factor * Area

As a user, you only have to provide a weight area factor for each deck. The mass calculation as applied for decks is also used for the mass calculation of bulkheads.

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