Section 3 in The Merchant Shipping (Tonnage Measurement of Sailing Vessels) Rules, 1960
3. Gross tonnage.
(1)The gross tonnage of a vessel shall be determined by the appropriate method outlined in Schedule 'A'.(2)All measurements for the purpose of ascertaining the tonnage of a vessel shall be in metres and fractions of a metre or in feet and fractions of a foot expressed in decimals.
