Distortions

Press the Distortions button in the editor to show the Distortions dialog.

To enable distortions, a britfair file must be loaded using the Load button and the general particulars must be defined. The following files must also exist in the same folder as the Britfair file (where name indicates the main part of the Britfair file name, name.bri):

• name.stn

  A file containing the X/Z coordinates of the stern profile

• name.stm

  A file containing the X/Z coordinates of the stem profile

• name.gpf

  A file containing the general particulars

Offset data can be distorted in the following ways:

• Scaling

  The offset data can be scaled in X, Y or Z by selecting the Scale ship option and specifying a new Lpp , Beam and/or Depth.

• Geosim

  The offset data can be scaled by the same ratio in each of the X, Y and Z directions by selecting the Geosim option. A target Lpp or Displacement can be given.

• Lackenby

  The offset data can be scaled non-linearly in the X direction by means of a Lackenby shift to achieve a new block coefficient, LCB, Entrance and/or Run at a given draft.