World Library  
Flag as Inappropriate
Email this Article

Thames class submarine

Article Id: WHEBN0004104379
Reproduction Date:

Title: Thames class submarine  
Author: World Heritage Encyclopedia
Language: English
Subject: HMS Severn, British K-class submarine
Publisher: World Heritage Encyclopedia

Thames class submarine

For other naval ship classes of the same name, see River class.
File:HMS Severn-1-.jpg
HMS Severn
Class overview
Name: River
Preceded by: S class
Succeeded by: Grampus class
Completed: 3
General characteristics
Type: Submarine
Displacement: 2,206 tons surfaced (Thames 2,165 tons)
2,723 tons submerged (Thames 2,680 tons)
Length: 345 ft (105.15 m)
Beam: 28 ft 3 in (8.61 m)
Draught: 4.85 m
Propulsion: 2 shaft diesel electric
2 supercharged diesels 10,000 hp max
2 electric motors 2,500 hp
Speed: 22 knots (41 km/h) surfaced
10 knots (19 km/h) submerged
Complement: 61

6 x 21 in torpedo tubes (bow)

1 x QF 4-inch (101.6 mm) Mk XII deck gun

The River class, or Thames class were a class of submarines built for the Royal Navy.

They were the last attempt by the Admiralty to produce "Fleet Submarines" that is submarines fast enough to operate as part of a fleet which at the time meant being able to manage somewhere around 20 knots (37 km/h) while surfaced. The previous attempts had been the steam powered K class submarines and the large 12-inch (305 mm) gunned M class submarines. The 'M' class were 'K' class hulls re-engined with diesels and modified to take a single 12-inch naval gun directly forward of the conning tower.

A design was drawn up in the late 1920s and three vessels were built by Vickers in Barrow, Thames in 1932, Severn and Clyde in 1935. The latter were a little larger than Thames. Initially 20 were planned but changes in thinking and cost limited the building to just the three.

The design compromised on diving depth to keep weight down and speed up. They had a safe diving depth of some 300 feet (90 m) compared to the Odin class before them which had managed 500 feet (150 m). They were powered by two diesel engines delivering 8,000 bhp. Two Ricardo engines drove generators that supercharged the diesels up to 10,000 bhp. This gave them a surface speed of 22 knots (41 km/h).

During the Second World War they initially operated in the North Sea and Mediterranean.

Thames was lost off Norway on 23 September 1940. Clyde was used to deliver supplies to the besieged island of Malta in September 1941. Severn and Clyde were in service in the Far East when they were taken out of service in mid to late 1945.


See also



  • Conway's All the World's Fighting ships 1922-1946
  • D.K. Brown - Nelson to Vanguard, Chatham Maritime Press ISBN 1-86176-136-8
  • - page from
  • - page from


This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Hawaii eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.