For regulation 89 of the principal Regulations (modification of section 4(6)(b) of the Act in relation to mariners) there shall be substituted the following regulation—
Modification of section 4(6E) of the Act
(89)
(1) As respects earnings paid to or for the benefit of a mariner for employment as such in any employment specified in paragraph (2) of this regulation, being employment which by virtue of the last preceding regulation is treated as employed earner’s employment, the appropriate percentage rate of the secondary Class 1 contribution specified in section 4(6E) of the Act shall be reduced by 0·5 and section 4(6E) of the Act shall be modified accordingly.
(2) The employment referred to in paragraph (1) of this regulation is employment as a master or member of the crew of a ship where—
(a) the employment is on a foreign-going ship and the payment of earnings is exclusively in respect of that employment; or
(b) the employment is partly on a foreign-going ship and partly otherwise than on such a ship and the payment of earnings in respect of that employment is made during the employment on the foreign-going ship.
(3) In this regulation the word “employment” includes any period of leave, other than leave for the purpose of study, accruing from the employment.