United States H-class submarine

Last updated
USS H-1;H69853.jpg
USS H-1
Class overview
NameH class
Builders
OperatorsFlag of the United States.svg  United States Navy
Preceded by G class
Succeeded by K class
Built1911–1918
In commission1913–1922
Completed9
Lost1
Retired8
General characteristics
Type Submarine
Displacement
  • 358 long tons (364 t) surfaced
  • 467 long tons (474 t) submerged
Length150 ft 4 in (45.82 m)
Beam15 ft 10 in (4.83 m)
Draft12 ft 5 in (3.78 m)
Installed power
  • 950  hp (710 kW) (diesel engines)
  • 600 hp (450 kW) (electric motors)
Propulsion
Speed
  • 14 knots (26 km/h; 16 mph) surfaced
  • 10.5 knots (19.4 km/h; 12.1 mph) submerged
Range
  • 2,300 nmi (4,300 km) at 11 kn (20 km/h; 13 mph) surfaced
  • 100 nmi (190 km) at 5 kn (9.3 km/h; 5.8 mph) submerged
Test depth200 ft (61 m)
Complement25 officers and men
Armament
The torpedo room of USS H-5 in 1919. The breeches of the four 18-inch (457 mm) torpedo tubes are at center. Torpedo room USS H-5.jpg
The torpedo room of USS H-5 in 1919. The breeches of the four 18-inch (457 mm) torpedo tubes are at center.

The United States H-class submarines were Electric Boat design EB26A and EB26R design coastal patrol submarines used by the United States Navy. [1]

Contents

The first three submarines of the class were laid down in March–April 1911 as Seawolf, Nautilus and Garfish, and were renamed H-1, H-2 and H-3 while still under construction on 17 November 1911, as part of a forcewide submarine redesignation. They were commissioned in December 1913/January 1914.

In 1915 the Imperial Russian Navy had ordered 18 H-class submarines built to a modified EB602 design. [2] Ordered from the Electric Boat Company, they were to be built in Canada at a temporary shipyard near Barnet, Vancouver, British Columbia to avoid US neutrality concerns, which had derailed the delivery of ten similar submarines to the British. The shipyard was owned by the British Pacific Construction and Engineering Co. Twelve were delivered, and served as the American Holland-class submarines, but the shipment of the final six was held up pending the outcome of the Russian Revolution of 1917, and the boats were stored in knockdown condition at their construction yard. All six were purchased by the United States Navy on 20 May 1918 and assembled at Puget Sound Navy Yard before being commissioned as H-4 to H-9 in late 1918. [3]

H-1 ran aground and was wrecked off the coast of Mexico on 12 March 1920, [4] while the remaining eight submarines were decommissioned in late 1922, and laid up in the Reserve Fleet. Finally stricken from the Navy List in 1930, they were sold for scrap in 1931 and 1933.

Design

These vessels included some features intended to increase underwater speed that were standard on U.S. submarines of this era, including a small conning tower and fairwater, and a rotating cap over the torpedo tube muzzles. For extended surface runs, the small fairwater and its open bridge was augmented with a temporary piping-and-canvas structure (see photo). USN tactical employment of these submarines in this era did not require "crash dives", so the considerable time it took to dismantle and store below the temporary bridge structure was not considered a liability. [5] Experience in World War I showed that the piping and canvas structure was inadequate in the North Atlantic weather, and USN submarines serving overseas in that war (E, K, and L-classes) had the forward structure of the fairwater modified with a metal "chariot" shield. Starting in 1918-1919 with lessons learned from overseas experience, U.S. submarines had bridges more suited to surfaced operations in rough weather. [6]

The streamlined, rotating torpedo tube muzzle cap eliminated the drag that muzzle holes would otherwise cause. In the stowed position, the submarine appears to have no torpedo tubes, as the holes in the cap are covered by the bow stem. This feature remained standard on Electric Boat designed submarines through the O-class, with the exception of the L-class and the USS M-1. The L and M-class boats pioneered the use of shutter-style doors for the torpedo tubes, which then became the standard for all USN submarines starting with the S-class patrol submarines of the 1920's. [7]

The EB26A design originally built for the USN (H-1 to H-3) had a watertight bulkhead separating the torpedo room from the forward battery compartment. [8] The six boats of the H-4 to H-9 group were built to the EB602L design (EB26R for the USN) for export to Russia. When seized by the U.S., they were completed to that slightly modified design. The biggest difference being that they did not have the bulkhead between the torpedo room and the forward battery, essentially making it one large compartment. [9]

Since the acquisition of the H-4 to H-9 group was delayed, other types had already been acquired by the USN so these last six boats were assigned hull numbers that fell into the middle of the S-class (147-152) [10]

Boats in class

See also

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References

Notes

  1. ↑ Friedman, pp. 336
  2. ↑ Friedman, pp. 78
  3. ↑ PigBoats.COM H-class page
  4. ↑ Hendren, pp. 235
  5. ↑ Friedman, pp. 78
  6. ↑ Friedman, pp. 59, 81, 153
  7. ↑ Friedman, Chap. 5
  8. ↑ PigBoats.COM H-1 & H-3 Plans page
  9. ↑ PigBoats.COM H-4 thru H-9 Plans page
  10. ↑ PigBoats.COM H-class page
  11. ↑ "Sea Wolf / H-1 (SS-28)". navsource.org. Retrieved 18 July 2010.
  12. ↑ "Nautilus / H-2 (SS-29)". navsource.org. Retrieved 18 July 2010.
  13. ↑ "Garfish / H-3 (SS-30)". navsource.org. Retrieved 18 July 2010.
  14. ↑ "H-4 (SS-147)". navsource.org. Retrieved 18 July 2010.
  15. ↑ "H-5 (SS-148)". navsource.org. Retrieved 18 July 2010.
  16. ↑ "H-6 (SS-149)". navsource.org. Retrieved 18 July 2010.
  17. ↑ "H-7 (SS-150)". navsource.org. Retrieved 18 July 2010.
  18. ↑ "H-8 (SS-151)". navsource.org. Retrieved 18 July 2010.
  19. ↑ "H-9 (SS-152)". navsource.org. Retrieved 18 July 2010.

Sources

PD-icon.svg This article incorporates text from the public domain Dictionary of American Naval Fighting Ships .

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