Several Sydney cruise boats linked to the death of a woman at the weekend have been raided by marine safety investigators and police.
The 39-year-old woman was found unconscious in the bathroom of the Lady Rose - a three-level vessel owned by All Occasion Cruises - on Saturday afternoon and could not be revived.
Police said several tests detected unsafe levels of gas in the bathroom.
Compliance officers from NSW's Roads and Maritime Services, with help from police and Australian Maritime Safety Authority inspectors, on Tuesday carried out "environmental pollution and safety compliance" checks on commercial charter vessels at Blackwattle Bay Marina.
The inspections also included checks of sewage disposal, RMS said in a statement.
The boats raided were reportedly all owned by All Occasion Cruises, which lists six vessels in its fleet on its website.
The company and AMSA have been contacted for comment.
