The Ocean Survey Vessel (OSV) Bold is operated by the United States Environmental Protection Agency. Originally commissioned as the USNS Victorious, it was renamed USNS Bold (T-AGOS-12) and was a Stalwart-class Modified Tactical Auxiliary General Ocean Surveillance Ship of the United States Navy. Stalwart class ships were originally designed to collect underwater acoustical data in support of Cold war anti-submarine warfare operations in the 1980s.