10.—(1) Navigational equipment required by these Regulations shall be of a type which has been approved by the Secretary of State:
Provided that in the case of a ship registered in a State party to the Safety of Life at Sea Convention 1974 this requirement shall not apply in relation to any equipment of a type approved by the Administration of that State.
(2) Any approval given by the Secretary of State pursuant to these Regulations shall be given in writing and shall specify the conditions (if any) on which it is given.