| 词条 | HMS B4 | |||||||||||||||||||||||||||||||||||||||||||||||
| 释义 |
HMS B4 was one of 11 B-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 1919. Design and descriptionThe B class was an enlarged and improved version of the preceding A class. The submarine had a length of {{convert|142|ft|3|in|m|1}} overall, a beam of {{convert|12|ft|7|in|m|1}} and a mean draft of {{convert|11|ft|2|in|m|1}}. They displaced {{convert|287|LT|t}} on the surface and {{convert|316|LT|t}} submerged. The B-class submarines had a crew of two officers and thirteen ratings.[1] 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|180|hp|0|adj=on}} electric motor. They could reach {{convert|12|kn|lk=in}} on the surface and {{convert|6.5|kn}} underwater.[1] On the surface, the B class had a range of {{convert|1000|nmi|lk=in}} at {{convert|8.7|kn}}.[2] 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.[3] Construction and careerB4 was built by Vickers at their Barrow-in-Furness shipyard, launched on 14 November 1905 and completed on 28 January 1906.[4]B4 collided with a dredger when entering Portsmouth harbour on 21 July 1906 and was badly damaged as a result, having to be beached before being taken into dry dock for repair.[5] When the war began in 1914, the boat was assigned to defend the Straits of Dover. B4 was sold for breaking up on 1 April 1919 to the Ardrossan Dry Dock Co. Notes1. ^1 Gardiner & Gray, p. 87 2. ^Akermann, p. 123 3. ^Harrison, Chapter 27 4. ^{{cite web|last=Harrison|first=A. N.|work=BR3043: The Development of British Submarines: From Holland No. 1 (1901) to HMS Porpoise (1930)|origyear=1979, London: Ministry of Defence|date=2018|title=Appendix I: List of RN Submarines in the 1901 to 1936 Programmes|url=http://rnsubs.co.uk/public/images/br3043/App1.pdf|publisher=RN Subs: Website of the Barrow Submariners Association|accessdate=25 March 2018}} 5. ^{{cite magazine |title=Naval Matters—Past and Prospective: Portsmouth Dockyard |magazine=The Marine Engineer and Naval Architect |volume=29|date=1 September 1906 |page=41}} References
External links
5 : British B-class submarines|World War I submarines of the United Kingdom|Ships built in Barrow-in-Furness|Royal Navy ship names|1905 ships |
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