All Submarine Pieces Locations in Grand Theft Auto V

Found in the waters along the left of the South Port of Los Santos. It is among some old, rusted framework.

Purchase the Sonar Collections Dock to start the hunt.

Located under the dock, behind the yellow ladder.

Located under the highway overpass/bridge. Next to what appears to be a sunken crane arm or other trussed member.

Located up the canal, among steel beam wreckage next to the Ski-Doo races.