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 1,900 kilometres (1,200 mi)[1] from the Ninety East Ridge to the Naturaliste Plateau, off the lower part of Southwest Australia.[2] It is one of the deepest points (surpassed by the Sunda Trench) in the Indian Ocean at 7,079 m (23,225 ft)[3]. It is located about 1,125 kilometres (699 mi) west-southwest of Perth at [ ⚑ ] 35°S 104°E / 35°S 104°E.
A survey in 1961 by the Australian oceanographic survey ship HMAS Diamantina (K377) confirmed the bathymetry and conducted a scientific survey. The trench (and the Fracture Zone) was named after her.[1]
[ ⚑ ] 35°00′S 104°00′E / 35°S 104°E