Captain Cook Cruises Sydney Harbour is part of SeaLink Marine & Tourism, one of Australia’s leading travel companies. Discover the beauty of Sydney Harbour with Captain Cook Cruises and choose from a selection of amazing experiences including lunch, high tea, dinner, sightseeing, and whale watching. Or view other great SeaLink travel offers available across Australia. Operating hours: Sunday – Thursday: 9:00am – 5:00pm, Friday & Saturday: 9:00am – 7:00pm