Regulation 4

any exceptions to the hours of rest set out in section 16 of the Act for seafarers whose duties involve watchkeeping, safety, security or prevention of pollution, or seafarers employed or engaged on a vessel on a short voyage, shall be set out in the provisions of a collective agreement or any other agreement between a seafarer and a shipowner, and such provisions shall be registered with the Director;

the minimum hours of rest shall not be less than 10 hours in any 24-hour period, and not be less than 70 hours in any 7‑day period, and such reduced rest periods shall not be allowed for more than 2 consecutive weeks, and the intervals between any 2 reduced rest periods shall not be less than twice the duration of the preceding rest period;

the minimum hours of rest may be divided into no more than 3 periods, one of which shall be at least 6 hours in length and neither of the other 2 periods shall be less than one hour in length;

the intervals between consecutive periods of rest shall not exceed 14 hours;

there shall not be more than two 24-hour periods of reduced rest in any 7-day period; and

adequate compensatory leave, more frequent or longer leave periods shall be provided.