HMS C7
{{short description|Submarine of the Royal Navy}}
{{Use dmy dates|date=September 2017}}
{{Use British English|date=September 2017}}
| {{Infobox ship begin}}
{{Infobox ship image |Ship image=File:HMS C38.jpg |Ship caption=HMS C38 - a typical C-class submarine }} {{Infobox ship career |Hide header= |Ship country=United Kingdom |Ship flag={{shipboxflag|United Kingdom|naval}} |Ship name=HMS C7 |Ship ordered= |Ship awarded= |Ship laid down=9 December 1905 |Ship launched=15 February 1907 |Ship christened= |Ship acquired= |Ship commissioned=23 May 1907 |Ship decommissioned= |Ship in service= |Ship out of service= |Ship renamed= |Ship refit= |Ship struck= |Ship fate=Sold for scrapping, 20 December 1919 |Ship homeport= }} {{Infobox ship characteristics |Hide header= |Header caption= |Ship class=C-class submarine |Ship displacement=*{{convert|287|LT|t|abbr=on}} surfaced
|Ship length={{convert|142|ft|3|in|m|1|abbr=on}} |Ship beam={{convert|13|ft|7|in|m|1|abbr=on}} |Ship draught={{convert|11|ft|6|in|1|abbr=on}} |Ship power=*{{convert|600|bhp|kW|lk=in|abbr=on}} petrol
|Ship propulsion=*1 × 16-cylinder Vickers petrol engine
|Ship speed=*{{convert|12|kn|abbr=on|lk=in}} surfaced
|Ship range={{convert|910|nmi|abbr=on|lk=in}} at {{convert|12|kn|abbr=on}} on the surface |Ship test depth={{convert|100|ft|1}} |Ship complement=2 officers and 14 ratings |Ship armament=2 × 18 in (450 mm) bow torpedo tubes |Ship notes= }} |
HMS C7 was one of 38 C-class submarines built for the Royal Navy in the first decade of the 20th century. The boat survived the First World War and was sold for scrap in 1920.
Design and description
The C class was essentially a repeat of the preceding B class, albeit with better performance underwater. The submarine had a length of {{convert|142|ft|3|in|m|1}} overall, a beam of {{convert|13|ft|7|in|m|1}} and a mean draft of {{convert|11|ft|6|in|m|1}}. They displaced {{convert|287|LT|t}} on the surface and {{convert|316|LT|t}} submerged. The C-class submarines had a crew of two officers and fourteen ratings.Gardiner & Gray, p. 87
For surface running, the boats were powered by a single 16-cylinder {{convert|600|bhp|lk=in|0|adj=on}} Vickers petrol engine that drove one propeller shaft. When submerged the propeller was driven by a {{convert|300|hp|0|adj=on}} electric motor. They could reach {{convert|12|kn|lk=in}} on the surface and {{convert|7|kn}} underwater. On the surface, the C class had a range of {{convert|910|nmi|lk=in}} at {{convert|12|kn}}.Harrison, Chapter 3
The boats were armed with two 18-inch (45 cm) torpedo tubes in the bow. They could carry a pair of reload torpedoes, but generally did not as they would have to remove an equal weight of fuel in compensation.Harrison, Chapter 27
Construction and career
C7 was built by Vickers at their Barrow-in-Furness shipyard, laid down on 9 December 1905 and was commissioned on 23 May 1907. The boat is often mistakenly credited with sinking {{ship|SM|UC-68||2}} on 5 April 1917 off the coast of The Netherlands. However, this attack was made against {{ship|SM|UB-10||2}}, which survived.McCartney, Innes (2002). [https://books.google.com/books?id=j6ooZdh1rlkC&pg=PA60 Lost Patrols: Submarine Wrecks of the English Channel]. Periscope Publishing Ltd. p. 60. {{ISBN|1904381049}} C7 was sold on 20 December 1919.
Notes
{{reflist|30em}}
References
- {{cite book|last=Akermann|first=Paul|title=Encyclopaedia of British Submarines 1901–1955|edition=reprint of the 1989|year=2002|publisher=Periscope Publishing|location=Penzance, Cornwall|isbn=1-904381-05-7}}
- {{Cite Colledge2006}}
- {{cite book |editor1-last=Gardiner|editor1-first=Robert|editor2-last=Gray|editor2-first=Randal|title=Conway's All the World's Fighting Ships 1906–1921|year=1985|location=Annapolis, Maryland|publisher=Naval Institute Press|isbn=0-85177-245-5|name-list-style=amp}}
- {{cite web|url=http://rnsubs.co.uk/dits-bits/br-3043.html|title=The Development of HM Submarines From Holland No. 1 (1901) to Porpoise (1930) (BR3043)|last=Harrison|first=A. N.|date=January 1979|publisher=RN Subs|access-date=27 September 2022}}
{{British C class submarine}}
{{coord missing|Atlantic Ocean}}
{{DEFAULTSORT:C07}}
Category:British C-class submarines
Category:Ships built in Barrow-in-Furness
Category:Shipwrecks in the English Channel