HMS H25 explained

HMS H25 was a British H class submarine built by Vickers Limited, Barrow-in-Furness, as part of the Batch 3 H class submarines. She was launched on 27 April 1918 and was commissioned on 16 July 1918. It had a complement of twenty-two crew members.

HMS H25 was sold on 19 February 1929 and was broken up in Charlestown, Fife.

Design

Like all post-H20 British H-class submarines, H25 had a displacement of 423LT at the surface and 510LT while submerged.^[1] It had a total length of 171feet,^[2] a beam of 15feet, and a draught of . It contained a diesel engines providing a total power of and two electric motors each providing power.^[3] The use of its electric motors made the submarine travel at 11kn. It would normally carry 16.4LT of fuel and had a maximum capacity of 18LT.^[4]

The submarine had a maximum surface speed of 13kn and a submerged speed of 10.5kn. Post-H20 British H-class submarines had ranges of 2985nmi at speeds of 7.5kn when surfaced.^{[1] [3]} H25 was fitted with an anti-aircraft gun and four torpedo tubes. Its torpedo tubes were fitted to the bows and the submarine was loaded with eight torpedoes.^[1] It is a Holland 602 type submarine but was designed to meet Royal Navy specifications. Its complement was twenty-two crew members.^[1]

Bibliography

• Book: Hutchinson . Robert . Jane's submarines : war beneath the waves from 1776 to the present day . 2001 . HarperCollins . London . 9780007105588.

Notes and References

1. Book: Gardiner . Robert . Gray . Robert . Conway's All the World's Fighting Ships 1906-1921 . 1985 . Conway Maritime Press . London . 0-85177-245-5 . 92.
2. Book: Derek Walters. The History of the British 'U' Class Submarine. 2004. Casemate Publishers. 978-1-84415-131-8. 2–.
3. Retrieved from Naval-History on 20 August 2015.
4. Web site: Building History and Technical Details for Canadian CC-Boats and the Original H-CLASS. Electric Boat Company Holland Patent Submarines. J. D. Perkins. 1999. 20 August 2015.