Regulation 5
Any 1974 certificate which—
(a)
relates to a ship registered in a country in respect of which the Protocol of 1978 takes effect on a date later than the 1st May 1981; and
(b)
is in force on such later date
shall be treated, with effect from such later date and so long as it remains in force, as if it were an accepted Safety Convention certificate within the meaning of the Acts.