Auxiliary Research Submarine -

: Hydrodynamic studies, acoustic research, and sensor trials Key Capabilities : Deep-water diving and littoral (shallow) research

: Many older Balao-class submarines were reclassified as AGSS to serve as trainers or sonar targets before being retired. auxiliary research submarine

The USS Albacore was perhaps the most influential research submarine ever built. : Hydrodynamic studies, acoustic research, and sensor trials