(1)  A fisheries officer may signal or direct a person apparently in charge of a vessel or vehicle –

(a) to stop the vessel or vehicle; or

(b) not to move the vessel or vehicle for a reasonable period.

(2)  .  .  .  .  .  .  .  .  

(3)  A person is not required to comply with a signal or direction under subsection (1) if the person –

(a) reasonably believes that to comply would endanger the person, another person, the vessel or the vehicle; and

(b) complies with the signal or direction as soon as it is practicable to do so.