Diamantina Deep named after her. Diamantina Deep The Diamantina Deep is located in the Diamantina Trench southwest of Perth, Western Australia. The Diamantina Trench is in the eastern part of the larger Diamantina Fracture Zone, which stretches from the Ninety East Ridge to the Naturaliste Plateau, off the lower part of Southwest Australia. It is one of the deepest points (surpassed by the Sunda Trench) in the Indian Ocean at . It is located about west-southwest of Perth at . A survey in 1961 by the Australian oceanographic survey ship confirmed the bathymetry and conducted a scientific survey. The trench (and the
HMAS Diamantina (K377) her wartime service. "Diamantina" was recommissioned as an oceanographic survey ship on 22 June 1959. She carried the pennant numbers F377, A266, and GOR266 at various points throughout this period of her career. After successfully completing her first oceanographic survey in July, she embarked on her first oceanographic cruise on 20 August. On 20 September, the ship performed the first survey of the Montebello Islands following the British atomic test, Operation Hurricane. On 22 October, "Diamantina" carried out the first survey of the waters around Christmas Island. "Diamantina"’s most notable achievement during her second commission was the discovery of the