Gato/Balao Class
SS.220 Barb

SS.366 Hawkbill

SS.407 Sea Robin

SS.410 Threadfin

 

Gato Series

Boats in class  73 Units - SS.212-SS.284
Normal displacement surfaced  1.825t
Normal displacement submerged  2.410t + 2.424t
Machinery  4 x Fairbanks Morse or General Motors Diesel
4 x Elliot or General Electric
Maximum power Surfaced/Submerged  5.400hp/2.740hp
Speed Surfaced/Submerged  20,25 knots/8,75 knots
Armament  1 x 76mm L/50 Gun later
1 x 102mm L/50 or 127mm L/25 Gun
2 x 12,7mm MG
Torpedeo Tubes  10 x 533mm/24 Torpedoes/40 Mines
Length  91,6m
Beam  8,3m
Height  5,1m
Complement  60-80
Year of construction  1940-1943
Fate  
Builder  Electric Boat Groton
Portsmouth Navy Yard
Mare Island Navy Yard
Manitowoc Shipyards

Balao Series

Boats in class  132 Units - SS.285-SS.416
Normal displacement surfaced  1.826t
Normal displacement submerged  2.391t + 2.414t
Machinery  4 x Fairbanks Morse or General Motors Diesel
4 x Elliot or General Electric
Maximum power Surfaced/Submerged  5.400hp/2.740hp
Speed Surfaced/Submerged  20,25 knots/8,75 knots
Armament  1 x 76mm L/50 Gun later
1 x 102mm L/50 or 127mm L/25 Gun
2 x 12,7mm MG
Torpedeo Tubes  10 x 533mm/24 Torpedoes
Length  91,6m
Beam  8,3m
Height  5,1m
Complement  60-80
Year of construction  1942-1946
Fate  
Builder  Electric Boat Groton
Portsmouth Navy Yard
Mare Island Navy Yard
Cramp Shipyard Philadelphia