Sumatra Trench Sumatra Trench The Sumatra Trench belongs to the Sunda Trench or Java Trench. The Sunda subduction zone (called also: the Sumatra-Andaman subduction zone) is located in the east part of Indian Ocean, and is about 300 km from the southwest coast of Sumatra and Java islands. It extends over 5000 km long, starting from Burma in the northwest and ending at Sumba Island in the southeast. The Java trench was generated by the oblique subduction of the Indo-Australian Plate into the Sunda plate at a rate of 61mm/y (in the south) and 51mm/y (in the north). The oceanic crust being
HMAS Diamantina (K377) complement of 140. "Diamantina" was laid down on 12 April 1943 at Walkers Limited in Maryborough, Queensland. She was launched on 6 April 1944, and commissioned into the RAN at Hervey Bay, Queensland, on 27 April 1945 carrying pennant number K377. She was named for the Diamantina River in Queensland, and was one of eight River-class frigates built for the RAN during World War II. After commissioning, "Diamantina" sailed to Sydney, New South Wales, remaining there until late May when she embarked for New Guinea to complete her trials. These were concluded in June 1945 and by the end of