Sunda Trench an underwater ridge, and much of the trench is at least partially filled with sediments. Mappings after the 2004 Indian Ocean earthquake of the plate boundary showed resemblance to suspension bridge cables, with peaks and sags, indicative of asperity and locked faults, instead of the traditional wedge shape expected. Some of the earliest exploration of the Trench occurred in the late 1950s when Robert Fisher, Research Geologist at the Scripps Institution of Oceanography, investigated the trench as part of a worldwide scientific field exploration of the world's ocean floor and sub-oceanic crustal-structure. Bomb-sounding, echo-train analysis and manometer were some of
HMAS Diamantina (K377) HMAS Diamantina (K377) HMAS "Diamantina" (K377/F377/A266/GOR266), named after the Diamantina River in Queensland, is a that served the Royal Australian Navy (RAN). Constructed in the mid-1940s, "Diamantina" was active from 1945 until 1946, was placed in reserve, then was recommissioned as a survey ship from 1959 until 1980. Following her second decommissioning, the frigate was preserved at the Queensland Maritime Museum as a museum ship. She was the last World War II-era frigate to leave RAN service, and of the 151 River-class frigates constructed for 19 navies worldwide, "Diamantina" is the only one preserved as a museum ship. "Diamantina" had