USNS Adventurous (T-AGOS-13) was a Stalwart-class modified tactical auxiliary general ocean surveillance ship of the United States Navy in service from 1988 to 1992.

Designed to collect underwater acoustical data in support of anti-submarine warfare operations, Adventurous spent the final years of the Cold War towing sonar equipment to hunt for Soviet Navy submarines.

She remained inactive until October 2001, when she arrived at Jacksonville, Florida, to undergo conversion at the Atlantic Dry Dock Corporation for use as a fisheries research ship.

[1][2] Oscar Elton Sette has an oceanographic winch with a maximum pull weight of 15,380 pounds (6,980 kg) which can deploy up to 8,000 meters (26,000 feet) of 3/8-inch (9.5-mm) conductor cable.

[3] To enhance the safety of underwater diving operations in remote areas, Oscar Elton Sette has a recompression chamber to allow immediate treatment of divers showing symptoms of decompression sickness ("the bends").

[1][4] Oscar Elton Sette also is actively involved in NMFS Honolulu Coral Reef Restoration cruises, which concentrate scientific efforts on removing discarded marine debris and commercial fishing gear from fragile coral reefs, as well as on classifying and analyzing the density of the debris and discarded gear.