PIAS Manual
2019
Program for the Integral Approach of Shipdesign

This menu is also found in Hulldef, and for Fairway the first option is of interest, discussed below. All other ship hull parameters that can be specified in this menu are not relevant for Fairway, but may be important at subsequent calculations with PIAS. See Define main dimensions and further ship parameters for a discussion of these parameters.
Here main dimensions for the hull design can be specified, and, in addition, also a number of hull form coefficients that are used as target values in the design. With these coefficients (block coefficient, LCB and midship coefficient) a SAC can be generated, which can be utilized in two ways:
Also the SAC itself can be generated in two ways, either automatically, see Hullform transformation, or by interactive graphical manipulation, see Change the shape of the SAC.