Class overview
NameMoray class
BuildersRotterdamsche Droogdok Maatschappij, Rotterdam
General characteristics
TypeSubmarine

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). 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

  1. ↑ Martijn Delaere (9 June 1989). "De Nederlandse onderzeedienst wordt met opheffing bedreigd". Het Parool (in Dutch).
  2. 1 2 Schoonoord (2012), p. 291.
  3. ↑ Jaime Karremann (14 February 2019). "'Voor nieuwe onderzeeboten zou Defensie nu keuze voor één partij moeten maken'". Marineschepen.nl (in Dutch).
  4. ↑ "Beleidsplan over Marinebasis: Privatisering Rijkswerf in Den Helder niet wenselijk". Nederlands Dagblad (in Dutch). 17 March 1986.
  5. ↑ Onno Buiter (27 June 1990). "Afgedankte Zeehond is 'spoorloos': Oudgediende wordt proefdier voor het experiment 'Snorkelloos varen'". Het Vrije Volk (in Dutch).
  6. ↑ "Walrus of Zeeleuw? Dat is de kwestie". Het Vrije Volk (in Dutch). 19 June 1987.
  7. 1 2 Frans Peeters (24 June 1988). "Moray-onderzeeër perfect voor Israël bij kust-operaties". Het Parool (in Dutch).
  8. ↑ Frans Peeters (9 June 1994). "RDM heeft nieuwe order nodig". Het Parool (in Dutch).
  9. 1 2 3 4 Henk Knoop (22 April 1989). "Moray kleiner dan de Walrus en geen druppelvorm: Nieuwste onderzeeboot van levensbelang voor RDM". De Telegraaf (in Dutch).
  10. ↑ Theo Nijenhuis (21 April 1986). "Vertrouwelijke brief Nevesbu: Bundeling marine-werven obstakel voor nieuwe orders". De Volkskrant (in Dutch).
  11. ↑ "RDM wil compensatie voor afstel van Walrus". NRC Handelsblad (in Dutch). 20 September 1988.
  12. ↑ "RDM: hoe nu verder na het stoppen van Walrus?". Het Vrije Volk (in Dutch). 21 September 1988.
  13. 1 2 Jaime Karremann (16 February 2016). "Zwaardvisklasse niet vervangen: hoe Nederland belangrijke onderzeebootbouwkennis verloor". Marineschepen.nl (in Dutch).
  14. ↑ "Werf RDM zoekt naar Europese partner voor bouw onderzeeboten". NRC Handelsblad (in Dutch). 3 May 1989.
  15. 1 2 3 Jaime Karremann (17 January 2019). "Do conventional submarines need diesels in the future?". Navies Worldwide.
  16. 1 2 Erik van Huizen (19 December 2018). "Goede vooruitzichten voor elektro onderzeeboot". Maritiem Nederland (in Dutch).

References

  • Schoonoord, D.C.L. (2012). Pugno pro patria: de Koninklijke Marine tijdens de Koude Oorlog (in Dutch). Franeker: Van Wijnen. ISBN 978-90-5194-455-6.

Scale model of a Moray-class submarine at the Rotterdam City Archive (Dutch: Stadsarchief Rotterdam).

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