30.—(1) A person on board a vessel in Irish waters or an Irish ship in waters anywhere shall not consume alcohol or take a drug or any combination of drugs or drugs and alcohol while on board the vessel in circumstances which could affect the safety of persons or create a disturbance or serious nuisance on board the vessel or affect the safety of other persons using Irish waters or constitute a nuisance to such persons.

(2) A person in command or in charge of a vessel in Irish waters or an Irish ship in waters anywhere shall take all reasonable steps to ensure that all persons on board comply with subsection (1).

(3) A person who fails to comply with subsection (1) is guilty of an offence and is liable on summary conviction to a fine not exceeding €5,000 or to imprisonment for a term not exceeding 3 months or both.