Engineering:Moray-class submarine
| Class overview | |
|---|---|
| Name: | Moray class |
| Builders: | Rotterdamsche Droogdok Maatschappij, Rotterdam |
| General characteristics | |
| Type: | Submarine |
Moray was the name of a proposed new class of submarines developed by the Rotterdamsche Droogdok Maatschappij (RDM).[1][2] While a Moray-class submarine was never actually built, the detailed design of the submarine class was fully completed.[3]
Design
A Moray-class submarine could be built in several sizes depending on the type of submarine that was needed.[4] For smaller submarines that would patrol off the coast there was a design that ranged from 1,100 ton to 1,400 tons displacement, whereas oceangoing submarines ranged from 1,800 to potentially 2,000 tons displacement.[5][6] Besides customization RDM also offered three standard types of Moray-class submarines which were called the 1100, 1400 and 1800.[7] The number stood for roughly the amount of tonnage of the submarine. The three types had a length of 55.7 meters (182 ft 9 in) (1100), 64 m (210 ft 0 in) (1400) and 75.9 m (249 ft 0 in) (1800), while the beam was 6.4 m (21 ft 0 in) and the draft 5.5 m (18 ft 1 in).[citation needed] The smallest submarine, the 1100, had space for a crew of 26.[8] The 1800 had space for a crew of 41.[9]
While the Moray class was derived from the Walrus class, it had several differences with that class.[10][2] The main difference was that the size of a Moray-class submarine was significantly smaller than a submarine of the Walrus class, which displaced around 2,800 tons.[11][12] Another difference was that the hull of the Moray class was, unlike both the Zwaardvis and Walrus-class submarines, not in the shape of a tear drop.[9] The more straight-lined hull of the Moray class made it possible to extend or shorten the submarine.[13] It also allowed the insertion of a hull section that included a air-independent propulsion (AIP) system.[13] A submarine of the Moray class could also dive less deep than a Walrus-class submarine.[14] The Moray-class submarines had a estimated diving depth of more than 300 m (980 ft).[9][7]
The price of a Moray-class submarine was estimated to cost around 220 million Dutch guilders in 1989.[9]
Electric moray 1800
In June 2018 a concept of an fully electric submarine based on the moray 1800 design was presented at the submarine symposium UDT in Glasgow.[15] In the revealed concept the diesel engines and all related equipment were removed from the moray 1800 design together with the lead-acid batteries; these components were instead replaced with lithium batteries.[16][15] The lithium batteries allowed the 1,800-ton submarine to stay at sea for three weeks before needing to return to recharge its batteries.[16] In addition, there were several advantages and disadvantages to using only lithium batteries to power a submarine.[15]
Notes
Citations
- ↑ Martijn Delaere (9 June 1989). "De Nederlandse onderzeedienst wordt met opheffing bedreigd" (in Dutch). Het Parool. https://resolver.kb.nl/resolve?urn=ABCDDD:010846079:mpeg21:p007.
- ↑ 2.0 2.1 Schoonoord (2012), p. 291.
- ↑ Jaime Karremann (14 February 2019). "'Voor nieuwe onderzeeboten zou Defensie nu keuze voor één partij moeten maken'" (in Dutch). Marineschepen.nl. https://marineschepen.nl/nieuws/Onderzeeboten-interview-carel-prins-140219.html.
- ↑ "Beleidsplan over Marinebasis: Privatisering Rijkswerf in Den Helder niet wenselijk" (in Dutch). Nederlands Dagblad. 17 March 1986. https://resolver.kb.nl/resolve?urn=ddd:010569895:mpeg21:p001.
- ↑ Onno Buiter (27 June 1990). "Afgedankte Zeehond is 'spoorloos': Oudgediende wordt proefdier voor het experiment 'Snorkelloos varen'" (in Dutch). Het Vrije Volk. https://resolver.kb.nl/resolve?urn=ddd:010963572:mpeg21:p002.
- ↑ "Walrus of Zeeleuw? Dat is de kwestie" (in Dutch). Het Vrije Volk. 19 June 1987. https://resolver.kb.nl/resolve?urn=ddd:010962437:mpeg21:p009.
- ↑ 7.0 7.1 Frans Peeters (24 June 1988). "Moray-onderzeeër perfect voor Israël bij kust-operaties" (in Dutch). Het Parool. https://resolver.kb.nl/resolve?urn=ABCDDD:010832807:mpeg21:p006.
- ↑ Frans Peeters (9 June 1994). "RDM heeft nieuwe order nodig" (in Dutch). Het Parool. https://resolver.kb.nl/resolve?urn=ABCDDD:010841864:mpeg21:p012.
- ↑ 9.0 9.1 9.2 9.3 Henk Knoop (22 April 1989). "Moray kleiner dan de Walrus en geen druppelvorm: Nieuwste onderzeeboot van levensbelang voor RDM" (in Dutch). De Telegraaf. https://resolver.kb.nl/resolve?urn=ddd:010645556:mpeg21:p025.
- ↑ Theo Nijenhuis (21 April 1986). "Vertrouwelijke brief Nevesbu: Bundeling marine-werven obstakel voor nieuwe orders" (in Dutch). De Volkskrant. https://resolver.kb.nl/resolve?urn=ABCDDD:010878758:mpeg21:p002.
- ↑ "RDM wil compensatie voor afstel van Walrus" (in Dutch). NRC Handelsblad. 20 September 1988. https://resolver.kb.nl/resolve?urn=KBNRC01:000029175:mpeg21:p013.
- ↑ "RDM: hoe nu verder na het stoppen van Walrus?" (in Dutch). Het Vrije Volk. 21 September 1988. https://resolver.kb.nl/resolve?urn=ddd:010962899:mpeg21:p002.
- ↑ 13.0 13.1 Jaime Karremann (16 February 2016). "Zwaardvisklasse niet vervangen: hoe Nederland belangrijke onderzeebootbouwkennis verloor" (in Dutch). Marineschepen.nl. https://marineschepen.nl/dossiers/Hoe-Nederland-belangrijke-onderzeebootbouw-kennis-verloor.html.
- ↑ "Werf RDM zoekt naar Europese partner voor bouw onderzeeboten" (in Dutch). NRC Handelsblad. 3 May 1989. https://resolver.kb.nl/resolve?urn=KBNRC01:000031296:mpeg21:p011.
- ↑ 15.0 15.1 15.2 Jaime Karremann (17 January 2019). "Do conventional submarines need diesels in the future?". https://naviesworldwide.com/navy-news/do-conventional-submarines-need-diesel-engines/.
- ↑ 16.0 16.1 Erik van Huizen (19 December 2018). "Goede vooruitzichten voor elektro onderzeeboot" (in Dutch). https://www.maritiemnederland.com/artikelen/techniek-innovatie/goede-vooruitzichten-voor-elektro-onderzeeboot.
References
- Schoonoord, D.C.L. (2012) (in Dutch). Pugno pro patria: de Koninklijke Marine tijdens de Koude Oorlog. Franeker: Van Wijnen. ISBN 978-90-5194-455-6.
External links
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