(1)

An enforcement order comes into force:

(a) if a commencement time that is after the day on which the order is given to the maritime industry participant concerned is specified in the order—at that time; or
(b) otherwise—at the beginning of the seventh day after it is given to the maritime industry participant concerned.

(2)

The order remains in force:

(a) for the period (if any) specified in the order; or
(b) until it is revoked by the Secretary.