Onverschrokken
Class overview
NameOnversaagd class
Builders
Operators Royal Netherlands Navy
Built1952–1955
In commission1954–1987
Planned6
Completed6
Scrapped5
Preserved1
General characteristics [1][2]
TypeMinesweeper
Displacement750 t (740 long tons)
Length50.29 m (165 ft 0 in)
Beam10.67 m (35 ft 0 in)
Draft2.80 m (9 ft 2 in)
Propulsion
Speed15.5 knots (28.7 km/h; 17.8 mph)
Crew72
Armament1 x 40 mm gun

The Onversaagd class was a ship class of six minesweepers that were built in the United States for the Royal Netherlands Navy (RNN).[3][4] They were paid for by the United States under the Mutual Defense Assistance Program (MDAP).[5] The minesweepers were based on the design of the Aggressive class and taken into service of the RNN between 1954 and 1955.[6]

Design

To sweep naval mines the minesweepers of the Onversaagd class were equipped with the Wire Mk1, M Mk 6 A, A Mk 6B and the A Mk 4v.[6] Furthermore, the ships had a single 40 mm gun.[2] In addition, the minesweepers were equipped with a prototype of the UQS-1, but this mine avoidance sonar did not meet expectations.[6]

While the Onversaagd-class minesweepers had a range of 2,200 nautical miles (4,100 km; 2,500 mi), it was deemed insufficient, as it meant that the ships could only stay at sea for a maximum of eight to nine days without having to replenish its oil.[7]

Ships in class

Onversaagd-class construction data[8][9][10]
Hull number Name Builder Laid down Launched Commissioned Decommissioned Fate Notes
M884 / A854 Onversaagd ¹ Astoria Marine Construction 24 September 1952 4 November 1953 27 May 1954 23 July 1976 Sold for scrap to Liguria Maritime Ltd. in 1979 [11]
M885 / A855 Onbevreesd ² Astoria Marine Construction 8 December 1952 7 November 1953 21 September 1954 28 May 1982 [12]
M886 / A856 Onverschrokken ³ Peterson Builders 19 February 1952 17 January 1953 22 Juli 1954 12 February 1987 Museum ship in Vlissingen [13]
M887 / A857 Onvermoeid ² Boston Naval Shipyard 27 February 1953 2 May 1953 23 September 1954 1 October 1971 Sold for scrap to Ross & Sons in 1975 [14]
M888 / A858 Onvervaard ² Astoria Marine Construction 11 April 1952 6 March 1954 31 January 1955 26 April 1968 Sold for scrap to Deans Marine Ltd. in 1983 [15]
M889 / A859 Onverdroten ² Peterson Builders 17 February 1952 22 August 1953 22 November 1954 26 February 1965 Sold for scrap to the firm Mantel in 1984 [16]

Citations

  1. ^ "Onversaagd klasse" (in Dutch). Onze Marine Vloot. Retrieved 7 December 2022.
  2. ^ a b van Amstel (1991), p. 115.
  3. ^ "Amerikaanse mijnenveger in Nederland aangekomen". Trouw (in Dutch). 21 December 1954.
  4. ^ Schoonoord (2012), p. 57.
  5. ^ "Eerste mijnenveger uit V.S. aangekomen". Nijmeegsch Dagblad (in Dutch). 21 December 1954.
  6. ^ a b c Roetering (1997), p. 131.
  7. ^ Schoonoord (2012), p. 74.
  8. ^ van Amstel (1991), pp. 114-117.
  9. ^ Raven (1988), p. 184.
  10. ^ van Amstel (1991), p. 89.
  11. ^ "Hr.Ms. Onversaagd" (in Dutch). Onze Marine Vloot. Retrieved 7 December 2022.
  12. ^ "Hr.Ms. Onbevreesd" (in Dutch). Onze Marine Vloot. Retrieved 7 December 2022.
  13. ^ "Hr.Ms. Onverschrokken" (in Dutch). Onze Marine Vloot. Retrieved 7 December 2022.
  14. ^ "Hr.Ms. Onvermoeid" (in Dutch). Onze Marine Vloot. Retrieved 7 December 2022.
  15. ^ "Hr.Ms. Onvervaard" (in Dutch). Onze Marine Vloot. Retrieved 7 December 2022.
  16. ^ "Hr.Ms. Waalwijk" (in Dutch). Onze Marine Vloot. Retrieved 7 December 2022.

References

Categories