What type of submarine was XXX classified as?
USS Robert G. Bradley (FFG-49)
USS Robert G. Bradley (FFG-49), an Oliver Hazard Perry-class frigate, is a ship of the United States Navy named for Lieutenant Robert G. Bradley (1921--1944), who was awarded the Navy Cross posthumously for his heroism on USS Princeton (CVL-23) during the Battle of Leyte Gulf.
Oliver Hazard Perry-class frigate