The Merchant Shipping (Life-Saving Appliances) (Amendment) Rules 1966
Ships of Class X, i.e. of fishing boats, of 60 feet in length or over are required by the Merchant Shipping (Life-Saving Appliances) Rules 1965 to carry portable radio equipment. Such equipment must comply either with Rule 26 of the Merchant Shipping (Radio) (Fishing Boats) Rules 1965 or with a Performance Specification issued by the Postmaster General.