[Jmack]

here what i found ... not shure how reliable they are because they all say
maximum range 11,000 miles at 10 knots


Balao Class

Fuel Capacity: 116,000 gallons.

Tench Class

Fuel Capacity: 118,510 gallons.

Gato Class

Fuel Capacity: 94.400 gallons.

Sargo Class

Fuel Capacity: 109,900 gallons.

Tambor Class

Fuel Capacity: 93,993 / 96,365 gallons.

Salmon Class

Fuel Capacity: 96,025 gallons.

Shark Class

Fuel Capacity: 85,946 / 86,675 gallons.