Calculating Hydrostatics

As with the other dialogs, the default title is the node/icon name and if you change the title then the node name in the Application Tree is changed accordingly. This dialog only allows for a single heel and trim condition, so if more than one heel/trim combination is to be studied then you will need to add more nodes, at this level, and individually title each accordingly.

The dialog displays a list of drafts, in unit increments and in ascending order of depth. This list is automatically created by Calc based on the principal dimensions of the hull form as contained in the input hull geometry model. (It is to be noted that the output report pages will contain the vessel's various Principal Particulars and you can refer to these if he requires any information and/or clarification.).

You can either accept the full list of drafts or he can select only those that he wishes to use in the subsequent hydrostatic calculations. Up to a maximum of 1000 output drafts can be specified.

you can elect to base the hydrostatic calculations on the moulded hull form, or can allow for the average shell plate thickness by inputting an estimated value on the Ship Data node.

If you considers that the hull girder is likely to be sufficiently flexible as to affect the hydrostatics property calculations, then you can input an estimated value for the midship vertical bending deflection, with a positive value indicating a hogging condition and a negative value indicating a sagging condition.

If you wishes to use the extreme draft in the calculations, then he sets the 'Extreme' switch and inputs an estimated keel plate thickness on the Ship Data node.

Clicking either the Waves or the Axis Shift buttons within this dialog box results in you being presented with dialog boxes for allowing these options to used locally for the specific calculation.

You can also click the Edit Table button to choose which hydrostatic properties are reported, and perform some simple table formatting.