The Ocean Survey Vessel (OSV) Bold was operated by the United States Environmental Protection Agency (EPA).

[1] Stalwart-class ships were originally designed to collect underwater acoustical data in support of Cold War anti-submarine warfare operations in the 1980s.

[2] The ship is equipped with sidescan sonar, underwater video, water and sediment sampling instruments in study of ocean and coastline.

[3] One of the major missions of the Bold is to monitor sites where materials are dumped from dredging operations in U.S. ports for ecological impact.

[citation needed] Bold was converted to perform geophysical and geotechnical survey work in Singapore in 2020.