S-Boat dive times?

[AVGWarhawk]

USS S-51 (SS-162) was laid down on 22 December 1919 by the Lake Torpedo Boat Company at Bridgeport, Connecticut. Launched on 20 August 1921. The submarine was commissioned on 24 June 1922 with Lieutenant W. S. Haas in command. When commissioned, the S-48 Class submarine was 240' in length overall; had an extreme beam of 21'10"; had a normal surface displacement of 903 tons, and, when on the surface in that condition, had a mean draft of 13'6". The submarine displaced 1,230 tons when submerged. The S-boat was equipped with two periscopes. She had a double hull in the center portion of the boat; a single hull at each end of the ship. This S-boat could completely submerge in one minute to periscope depth. Maximum operating (test) depth was 200'. Stowage was provided for 44,350 gallons of diesel oil...by utilizing some of the ballast tanks as fuel oil tanks. This gave the boat a maximum operating radius of 8,000 miles at ten knots when transiting on the surface. The normal fuel oil load was 23,411 gallons. Two 6-M-85 six-cylinder 900 brake