39. A master who navigates his vessel in the harbour—
(a)without due care and attention; or
(b)in a manner liable to injure or endanger persons, other vessels, the banks of the harbour (whether above or below the level of high water) or any facility, structure or installation in or adjoining the harbour;
shall be guilty of an offence and liable on summary conviction to a fine not exceeding level 4 on the standard scale.