Poseidon Outer Great Barrier Reef Cruise

Poseidon Outer Reef Cruises operate this day tour to the Agincourt Ribbon Reefs on the Great Barrier Reef. These Great Barrier Reef tours travel to 3 reef sites, 70 kilometres North East of Port Douglas, to the crystal clear waters enabling the best possible day boat diving. Snorkellers and scuba divers can see the beautiful coral gardens, and endless varieties of colourful wrasses, cods, parrot fish, clown fish, clams and anemones.

MV Poseidon III, is an ultra modern 24 meter, high speed luxury catamaran. With a top speed of 30 knots, offering a faster, more comfortable trip to the Outer Great Barrier Reef, resulting in more time at each of the three sites visited daily. MV Poseidon III features a large air-conditioned main saloon, a spacious top sun deck and wheelhouse saloon, and a purpose built 8 metre rear deck with a lowering transom which makes access to and from the water extremely easy and accessible.

Poseidon Outer Great Barrier Reef Cruises is committed to preserving this beautiful and fragile environment. Moorings are used to prevent coral damage, and sewerage holding tanks avoid pollution of the Reef. No fishing or collecting is undertaken.

Poseidon Outer Great Barrier Reef Cruise holds the permits for 45 locations at 16 different reefs, travelling to the most northern reef site away from other day boat operators. The sites on this Great Barrier Reef cruise are chosen on the day offering the best conditions, all the sites are spectacular and suitable for snorkellers and scuba divers alike.

Itinerary Options

Additional charges apply for the below options.

Certified Dive: Includes 2 dives (drift and wall dives) with tanks and weights. Medical requirements apply. Children under 12 years not accepted.


  • 3 different reef sites at the Agincourt Ribbon Reefs
  • Limited passenger numbers with high crew/passenger ratio
  • Personalised service and individual attention


  • Morning & afternoon tea
  • Tropical smorgasbord lunch
  • Dive and snorkel equipment
  • Use of lycra suit


Departs: 8.30am daily from The Reef Marina, Port Douglas
Returns: Approximately 4.30pm

Hotel transfers from Port Douglas accommodation complimentary. Transfers also available from Cairns and northern beaches hotels

Additional Info

Children: 0 - 3 years are free of charge. 4 - 14 years are at child rate
Operated by: Quicksilver Connections

Intro Dive
Boat & Whale