Install Span from the CD. Span may then be started and will display seven windows containing: Polar performance graph; Results table; Upright resistance graph; and four views of the current design (if any). These are: Perspective, Plan, Profile and Body Plan.

Choose Open Measurement Data from the File menu. Select the file titled ‘SPAN sample’ and open it. This file contains the hull and rig measurement data for a simple yacht hull form. When it is read in, the data may be modified if necessary.