This menu, accessible from the Fairway main menu, is also found in Hulldef. For the operation of Fairway the first option is of primary interest, and possibly the fourth, discussed below. All other ship hull parameters that can be specified in this menu are only used for successive calculations with PIAS. These parameters are discussed in Define main dimensions and further ship parameters.

Define main dimensions and other ship parameters

1.	Main dimensions (design) & hull coefficients
2.	Main dimensions and allowance for shell and appendages
3.	Roll data (for Intact Stability Code weather criterion)
4.	Frame spacings
5.	Maximum drafts and minimum freeboards
6.	Allowable maximum trims
7.	Particulars of export to Poseidon
8.	Yacht particulars
9.	Particulars for SOLAS chapter 2, part B1
10.	Anchor handler particulars
11.	Towing hook and bollard pull
12.	Particulars for inland waterway container vessels
13.	Line-of-sight and air draft points

Main dimensions (design) & hull coefficients

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:

As basis for a global hull form transformation (see Hullform transformation).
As guide when designing the frame shapes zie Show Target Frame Area.

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.

Frame spacings

If construction frame spacings have been defined in this menu, then length positions of frames in the actions [New Planar Polycurve by Intersection] and [Move polycurve] can be inspected and modified in terms of construction frame numbers and an optional offset in millimeters. The settings for this option are discussed in Frame spacings.