Rabaul is situated to the east of New Britain province of Papua New Guinea. It is 2 hours away via plane from the Port Moresby. Rabaul Harbor was established when a prehistoric volcanic caldera collapsed to some extent many years ago, letting the sea to cross the threshold. The harbor is enclosed by a few smaller volcanoes which mostly are inactive or wiped out. But sometime in September 1994, a couple of such volcanoes erupted at the same time which happened to cover the entire township in layers of dense and grey cinders. After such eruptions, the local businesses and airport were repositioned to Kokopo a few 20 km of Southeast Rabaul. During nighttime, you can catch a sight with the amazing sunsets and radiant lava of Tarvuvur on the horizon. In this harbor, divers may spot many naval shipwrecks of Japan which submerged during World War 2.
The general visibility of Rabaul dive sites is between 5 and 15 meters that has 30°C water temperature. At the northern coast of Rabaul, there can be found coral reefs as well as several wreck dive spots.
The following are the few popular Rabaul dive sites:
1. The Lighthouse. A gigantic coral bommie, measures around 7 meters tall with swim-throughs, seawhips, giant sponges, and schools of reef fish.
2. Submarine Base. Approximately 250 m steep drop-off near to seaboard. The natural steep wall enclosed in soft corals is the periphery of a gigantic caldera. Seafans, seawhips and barrel sponges bedeck the wall beautifully.
3. Yamato Maru. It is a 4395 ton cargo shipper submerged in April 18, 1943.
4. Reimers Wall. Canyons, swim-troughs and over-hangs all over the reef’s open side.
5. Italy Maru. A 5859 ton mover that was created in Japan sometime in 1919 but submerged by the US Navy airliner in December 27, 1942.