The Merchant Shipping (Liability of Shipowners and Others) (Calculation of Tonnage) Order 1986
The Order provides that, for the purposes of the Convention on Limitation of Liability for Maritime Claims 1976, set out in and implemented by the Merchant Shipping Act 1979, a ship's gross tonnage (being the tonnage by relation to which the ship's liability may be limited) is to be calculated in accordance with regulations 4 to 6 of the Merchant Shipping (Tonnage) Regulations 1982. These implement the rules for measuring gross tonnage set out in Annex 1 of the International Convention on Tonnage Measurement of Ships, 1969 (Cmnd 4332). The best available evidence of the measurements of a ship will be used when the tonnage of a ship claiming limitation has not previously been ascertained and cannot be ascertained.