Barbel-class submarine

The Barbel-class submarines (affectionately known in the United States Navy's submarine force as the 'B-Girls'), the last diesel-electric propelled attack submarines built by the United States Navy, incorporated numerous, radical engineering improvements over previous classes. They were the first production warships built with the teardrop-shape hull first tested on the experimental USS Albacore (AGSS-569), and the first to combine the control room, attack center, and conning tower in the same space in the hull. This class of submarine became part of the United States Navy's fleet in 1959 and was taken out of service 1988–1990, leaving the Navy with an entirely nuclear-powered submarine fleet.

Barbel-class submarine

The Barbel-class submarines (affectionately known in the United States Navy's submarine force as the 'B-Girls'), the last diesel-electric propelled attack submarines built by the United States Navy, incorporated numerous, radical engineering improvements over previous classes. They were the first production warships built with the teardrop-shape hull first tested on the experimental USS Albacore (AGSS-569), and the first to combine the control room, attack center, and conning tower in the same space in the hull. This class of submarine became part of the United States Navy's fleet in 1959 and was taken out of service 1988–1990, leaving the Navy with an entirely nuclear-powered submarine fleet.