This calculator was designed to assist persons wishing to comply with the simplified extract from the Australian Yachting Federation Racing Rules 1973-77, Appendum E, Section IV, as appended in the class rules, and should be used in conjunction with the diagram and the help file. Measurements should be entered in Metres (eg. 5 metres 24 centimetres and 5 millimetres should be input as 5.245). | |||||||||||||||||||