Cat o Nine Tails Cruises operates the purpose built 130 seat catamaran Cat O Nine Tails. They have been established since 1982 and specialise in a range of tours of the St Helena Island National Park.Departures are mostly from Manly because of a short journey time of 30 minutes and a more protected crossing is experienced than from any other departure point.

Cat o Nine Tails Cruises established the St Helena Theatre Troupe in 1997. A multi skilled band of actors,singers and minstrels who have been comprehensively trained in the Islands history. Their first person interpretation of the Islands history using drama is a first for an historic site in Australia and has been highly acclaimed. In 1999, another unique achievement was the collaboration with the Wildlife Preservation Society of Qld (Bayside Branch) in establishing authoritative and educational ecotours of the Island.