S-Boat dive times?

[swdw]

Anyone have any definitive info on the standard and emergendy dive times for the sugar boats?

I've seen people mentione they were faster going under than the fleet boats, but can't find any solid info on this.

Thanks in advance

[AVGWarhawk]

Submarine USS S-49 (SS-160)

By: Robert Loys Sminkey,
Commander, United States Navy, Retired

USS S-49 (SS-160) was laid down on 22 October 1920 by the Lake Torpedo Boat Company at Bridgeport, Connecticut. Mrs. Joseph E. Austin christened the submarine...which was launched on 23 April 1921. The S-boat was commissioned at Bridgeport, Connecticut, on 5 June 1922 with Lieutenant Ingram C. Sowell 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 designed compliment was 4 officers and 34 enlisted men. 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'. The submarine was armed with five 21-inch torpedo tubes (four in the bow and one in the stern). Fourteen torpedoes were carried. One 4-inch/50-caliber gun was mounted on the main deck...forward of the conning tower fairwater. 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 horsepower (at 410 rotations per minute) diesel engines, that had a total output of 1,800 horsepower, that were made by the Busch-Sulzer Brothers Diesel Engine Company at Saint Louis, Missouri, could drive the boat at 14.4 knots when operating on the surface. Submerged propusion electrical power was provided by the 120 cell main storage battery...which was manufactured by the Gould Storage Battery Company at Trenton ("Trenton makes, the world takes"), New Jersey, which powered two 750 B.H.P. electric motors, with a total output of 1,500 designed brake horsepower, that were manufactured by the Ridgway Dynamo and Electric Company at Ridgway, Pennsylvania...which turned propeller shafts...which turned propellers...which drove the submarine at 11 knots, for a short period of time, when submerged. This submarine was one of four "4th Group" S-boats constructed. The 4th Group S-boats were the largest of the fifty-one S-boats contracted to be built for the United States Navy. These S-boats had six water-tight compartments to enhance internal integrity.

[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