Vessel Registration and Tonnage Regulations

6 In this Part, length, in respect of a vessel, means 96% of the total length on a waterline at 85% of the least moulded depth measured from the top of the keel, or the length from the fore side of the stem to the axis of the rudder stock on that waterline if that is greater. In vessels designed with a rake of keel, the waterline on which the length is measured shall be parallel to the designed waterline.