Moray-class submarine

Last updated
Class overview
NameMoray class
Builders Rotterdamsche Droogdok Maatschappij, Rotterdam
Preceded by Zwaardvis class
Cost ƒ220 million per unit (1989) [1]
Planned2 [2]
Cancelled2 [2]
General characteristics
Type Submarine
Displacement
Length
  • 55.7 m (182 ft 9 in)
  • 64 m (210 ft 0 in) [3]
  • 75.9 m (249 ft 0 in)
Beam6.4 m (21 ft 0 in) [3]
Draft5.5 m (18 ft 1 in)
Propulsion
Speed20 knots (37 km/h; 23 mph) [3]
Endurance65 days [4]
Test depth>300 m (980 ft)
Crew26 to 41
Armament6 × 533 mm (21 in) torpedo tubes

Moray [a] was the name of a proposed new class of submarines developed by the Rotterdamsche Droogdok Maatschappij (RDM). [5] [6] While a Moray class submarine was never actually built, the detailed design of the submarine class was fully completed. [7]

Contents

Design

A Moray-class submarine could be built in several sizes depending on the type of submarine that was needed. [8] For smaller submarines that would patrol off the coast, there was a design that ranged from 1,100 tons to 1,400 tons displacement, whereas oceangoing submarines ranged from 1,800 tons to potentially 2,000 tons displacement. [9] [10] Besides customization, RDM also offered three standard types of Moray-class submarines which were called the 1100, 1400 and 1800. [11] 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. [12] The 1800 had space for a crew of 41. [1]

While the Moray class was derived from the Walrus class, it had several differences with that class. [13] [6] 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. [14] [15] 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. [1] The more straight-lined hull of the Moray class made it possible to extend or shorten the submarine. [2] It also allowed the insertion of a hull section that included an air-independent propulsion (AIP) system. [2] The insertion of the AIP module would increase the tonnage of the submarine by 200 tons. [4] A submarine of the Moray class could also dive less deep than a Walrus-class submarine. [16] The Moray-class submarines had an estimated diving depth of more than 300 m (980 ft). [1] [11] The Moray 1800 had the same amount of battery cells as the Walrus-class submarines and an endurance of 65 days. [4] When it comes to armaments, the Moray class was equipped with six 533 mm (21 in) torpedo tubes that could launch a variety of weapons, such as Mark 48 torpedoes and Harpoon missiles. [3]

The price of a Moray-class submarine was estimated to cost around 220 million Dutch guilders in 1989. [1]

Electric Moray 1800

In June 2018, a concept of a fully electric submarine based on the Moray 1800 design was presented at the submarine symposium UDT in Glasgow. [17] 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. [18] [17] The lithium batteries allowed the 1,800-ton submarine to stay at sea for three weeks before needing to return to recharge its batteries. [18] In addition, there were several advantages and disadvantages to using only lithium batteries to power a submarine. [17]

See also

Submarines of similar era and comparison

Notes

  1. ↑ The name Moray stood for Multi Operational Requirements Affected Yield. [3]

Citations

  1. 1 2 3 4 5 Henk Knoop (22 April 1989). "Moray kleiner dan de Walrus en geen druppelvorm: Nieuwste onderzeeboot van levensbelang voor RDM". De Telegraaf (in Dutch).
  2. 1 2 3 4 Jaime Karremann (16 February 2016). "Zwaardvisklasse niet vervangen: hoe Nederland belangrijke onderzeebootbouwkennis verloor". Marineschepen.nl (in Dutch).
  3. 1 2 3 4 5 Darman (2004), p. 33.
  4. 1 2 3 van den Pol (1989), p. 358.
  5. ↑ Martijn Delaere (9 June 1989). "De Nederlandse onderzeedienst wordt met opheffing bedreigd". Het Parool (in Dutch).
  6. 1 2 Schoonoord (2012), p. 291.
  7. ↑ Jaime Karremann (14 February 2019). "'Voor nieuwe onderzeeboten zou Defensie nu keuze voor één partij moeten maken'". Marineschepen.nl (in Dutch).
  8. ↑ "Beleidsplan over Marinebasis: Privatisering Rijkswerf in Den Helder niet wenselijk". Nederlands Dagblad (in Dutch). 17 March 1986.
  9. ↑ Onno Buiter (27 June 1990). "Afgedankte Zeehond is 'spoorloos': Oudgediende wordt proefdier voor het experiment 'Snorkelloos varen'". Het Vrije Volk (in Dutch).
  10. ↑ "Walrus of Zeeleuw? Dat is de kwestie". Het Vrije Volk (in Dutch). 19 June 1987.
  11. 1 2 Frans Peeters (24 June 1988). "Moray-onderzeeër perfect voor Israël bij kust-operaties". Het Parool (in Dutch).
  12. ↑ Frans Peeters (9 June 1994). "RDM heeft nieuwe order nodig". Het Parool (in Dutch).
  13. ↑ Theo Nijenhuis (21 April 1986). "Vertrouwelijke brief Nevesbu: Bundeling marine-werven obstakel voor nieuwe orders". De Volkskrant (in Dutch).
  14. ↑ "RDM wil compensatie voor afstel van Walrus". NRC Handelsblad (in Dutch). 20 September 1988.
  15. ↑ "RDM: hoe nu verder na het stoppen van Walrus?". Het Vrije Volk (in Dutch). 21 September 1988.
  16. ↑ "Werf RDM zoekt naar Europese partner voor bouw onderzeeboten". NRC Handelsblad (in Dutch). 3 May 1989.
  17. 1 2 3 Jaime Karremann (17 January 2019). "Do conventional submarines need diesels in the future?". Navies Worldwide.
  18. 1 2 Erik van Huizen (19 December 2018). "Goede vooruitzichten voor elektro onderzeeboot". Maritiem Nederland (in Dutch).

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References

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