Alkmaar-class minehunter

The Alkmaar class is a ship class of fifteen minehunters that were built in the Netherlands for the Royal Netherlands Navy.[3][4] They are based on the design of the Tripartite class, which was developed by a collaborative effort between the Netherlands, Belgium and France, and replaced the minesweepers and minehunters of the Dokkum class.[5][6][7]

Haarlem
Class overview
NameAlkmaar class
BuildersVan der Giessen-De Noord, Alblasserdam
Operators
Preceded byDokkum class
Succeeded byVlissingen class
Cost1.3 billion Dutch guilders
Built1979–1989
In commission1983–present
Planned15
Completed15
Active14
Laid up1
General characteristics [1][2]
TypeMinehunter
Displacement510 t (500 long tons)
Length49.10 m (161 ft 1 in)
Beam8.90 m (29 ft 2 in)
Draft2.45 metres (8 ft 0 in)
Propulsion
Speed15 knots (28 km/h; 17 mph)
Range3,000 nmi (5,600 km; 3,500 mi) at 12 knots (22 km/h; 14 mph)
Boats & landing
craft carried
2 x PAP 104
Crew22-34
Sensors and
processing systems
  • 1 x DUBM 21B sonar
  • 1 x Racal Decca 1229 radar
  • EVEC plotting system
Armament1 x 20 mm machine gun

Design and construction

In 1975 the Netherlands, Belgium and France signed an agreement to develop a new mine countermeasures vessel together.[8] At the same time it was also decided that each country would contribute to the construction by being responsible for certain components and systems.[6][9] As a result, the Netherlands was responsible for the main propulsion, the gearboxes and propellers.[9] France delivered the mine countermeasure and electronics systems, while Belgium build the remaining electronics and mechanic installations.[8]

The construction of the Alkmaar class started in 1979 at the shipyard of Van der Giessen-De Noord in Alblasserdam.[10] The ships were made from polyester, which required new construction methods in comparison to the previous mine countermeasure vessels that were built at the shipyard.[1][11] As a result, Van der Giessen-De Noord invested 42 million Dutch guilders to build a new dedicated production hall that had a specific climate indoors and allowed serial construction in the same way as for aircraft production.[9][11][12] Inside the production hall there was an assembly line that contained four stations, with each ship staying around 21 weeks at a station before moving to the next.[13] Besides a new hall and tools, the shipyard also had to train personnel to be able to handle fiberglass and fiberglass sheets, which were used to construct the polyester ships.[13] The construction of the 15 minehunters are estimated to have cost a total of 1.3 billion Dutch guilders.[10]

Mine countermeasure systems

To hunt mines the Alkmaar class was equipped with the French DUBM 21B sonar, which was used to detect and classify mines, a Racal Decca 1229 radar and an EVEC plotting system.[14][10] The sonar had a range of almost one kilometer and allowed the ship to search for mines up to a depth of 80 meters underwater.[15][16] In addition, each ship was equipped with two Poisson Auto-Propulsé (PAP) type 104 submarine drones that were used for mine disposal.[17][10] This PAP 104 wire guided drone had a television camera aboard for observation and could be fitted out with explosives to destroy mines from a safe distance.[17][18]

Armament

The Alkmaar class had as armament a single 20 mm machine gun.[1][2]

Service history

Between 1987 and 1989 Maassluis, Hellevoetsluis and Urk were active in the Persian Gulf as part of a Western European Union (WEU) mine clearing operation and placed under Belgian command.[19]

In 1990 Alkmaar and Zierikzee took part in the exercise Safe Pass at the west coast of America.[20]

Ships in class

The ships of the Alkmaar class are named after medium-sized Dutch municipalities that played a role in the Eighty Years' War and can also be accessed by these ships.[2][21]

Alkmaar class construction data[22][4]
Pennant no. Name Builder Laid down Launched Commissioned Decommissioned Fate
M 850 Alkmaar Van der Giessen-De Noord
Alblasserdam, Netherlands
30 January 1979 2 May 1982 28 May 1983 2000 Sold to Latvia in 2007
M 851 Delfzijl 29 May 1980 30 October 1982 17 August 1983 2000 Sold to Latvia in 2007
M 852 Dordrecht 5 January 1981 18 February 1983 16 November 1983 2000 Sold to Latvia in 2007
M 853 Haarlem 16 June 1981 6 May 1983 12 January 1984 2011 Sold to Pakistan in June 2021[23]
M 854 Harlingen 30 November 1981 1 July 1983 12 April 1984 2000 Sold to Latvia in 2007
M 855 Scheveningen 24 May 1982 2 December 1983 18 July 1984 2002 Sold to Latvia in 2007
M 856 Maassluis 7 November 1982 27 April 1984 12 December 1984 2011 Sold to Bulgaria in 2019[24][25]
M 857 Makkum 28 February 1983 27 September 1984 8 May 1985
M 858 Middelburg 11 July 1983 18 February 1985 10 December 1986 2011 Sold to Pakistan in June 2021[23]
M 859 Hellevoetsluis 12 December 1983 18 July 1985 20 February 1987 2011 Sold to Bulgaria in 2019[26][25]
M 860 Schiedam 7 May 1984 12 December 1985 9 July 1986
M 861 Urk 1 October 1984 2 May 1986 10 December 1986 22 June 2022[27]
M 862 Zierikzee 25 February 1985 1 October 1986 7 May 1987
M 863 Vlaardingen 5 May 1986 6 August 1988 15 March 1989
M 864 Willemstad 6 October 1986 27 January 1989 20 September 1989

Export

Ukraine

In March 2023 it was reported that the Netherlands would donate two Alkmaar-class minehunters to Ukraine.[28][29] The transfer of these ships would most likely start from 2025.[30][31]

Notes

Citations

  1. van Amstel (1991), p. 80.
  2. Woudstra (1982), p. 156.
  3. Raven (1988), p. 185.
  4. Schoonoord (2012), p. 320.
  5. "Mijnenjager Delfzijl". Nieuwsblad van het Noorden (in Dutch). 10 August 1981.
  6. Raven (1988), p. 141.
  7. Schoonoord (2012), pp. 202–203.
  8. "Koningin doopt eerste van nieuw type mijnenbestrijder". Nederlands Dagblad (in Dutch). 17 May 1982.
  9. "Nieuwe mijnenbestrijder bij marine in gebruik". Nederlands Dagblad (in Dutch). 30 May 1983.
  10. Roetering (1997), p. 148.
  11. "Alkmaarklasse mijnenjagers". Marineschepen.nl. 14 March 2023.
  12. Woudstra (1982), p. 151.
  13. Henk Knoop (10 September 1983). "In schone "kraamkamer" bouwt jonge ploeg vijftien polyester marineschepen: Oude werf levert modernste mijnenjagers". De Telegraaf (in Dutch).
  14. "Netherlands agrees possible transfer of 2 M-Class frigates and 6 Alkmaar-class Minehunters to Greece". Navy Recognition. 31 October 2021.
  15. "Vaten landbouwgif nog niet boven water". Trouw (in Dutch). 18 February 1984.
  16. Henk Knoop (22 November 1984). "Geheim Russisch wapen gesnapt in volle zee". De Telegraaf (in Dutch).
  17. Raven (1988), p. 140.
  18. Woudstra (1982), pp. 146-147.
  19. Schoonoord (2012), p. 245.
  20. Roetering (1997), p.153.
  21. "Op werf in Alblasserdam:Mijnenvegers Delfzijl en Dordrecht gedoopt". Nieuwsblad van het Noorden (in Dutch). 28 February 1983.
  22. van Amstel (1991), pp. 80-81.
  23. Jaime Karremann (6 October 2022). "Verkochte mijnenjagers Haarlem en Middelburg onderweg naar Pakistan". Marineschepen.nl.
  24. Jaime Karremann (11 November 2019). "Bulgarije koopt twee Nederlandse mijnenjagers". Marineschepen.nl.
  25. Jaime Karremann (7 September 2020). "Verkochte mijnenjagers onderweg naar Bulgarije". Marineschepen.nl.
  26. "Netherlands sold 2 Tripartite class mine hunter to Bulgaria". Navy Recognition. 15 November 2019.
  27. Jaime Karremann (7 June 2022). "Mijnenjager Zr.Ms. Urk wordt eind juni uit dienst gesteld". Marineschepen.nl.
  28. "Nederland belooft Oekraïne mijnenjagers, droneradars en brugslagvaartuig". NOS (in Dutch). 14 March 2023.
  29. "Militaire steun aan Oekraïne". Ministerie van Defensie (in Dutch).
  30. "Nederland levert mijnenjagers en ander militair materiaal aan Oekraïne". NU.nl (in Dutch). 14 March 2023.
  31. Jaime Karremann (14 March 2023). "Nederland gaat mijnenjagers aan Oekraïne schenken". Marineschepen.nl (in Dutch).

References

  • Raven, G.J.A., ed. (1988). De kroon op het anker: 175 jaar Koninklijke Marine (in Dutch). Amsterdam: De Bataafsche Leeuw. ISBN 90-6707-200-1.
  • Roetering, B., ed. (1997). Mijnendienst 1907-1997 90 jaar: feiten, verhalen en anekdotes uit het negentigjarig bestaan van de Mijnendienst van de Koninklijke Marine (in Dutch). ISBN 90-90-10528-X.
  • 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.
  • van Amstel, W.H.E. (1991). De schepen van de Koninklijke Marine vanaf 1945 (in Dutch). Alkmaar: De Alk. ISBN 90-6013-997-6.
  • Woudstra, F.G.A. (1982). Onze Koninklijke Marine (in Dutch). Alkmaar: De Alk. ISBN 90-6013-915-1.
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