Onversaagd-class minesweeper
 Onverschrokken
| |
| Class overview | |
|---|---|
| Name | Onversaagd class |
| Builders |
|
| Operators |  Royal Netherlands Navy |
| Built | 1952–1955 |
| In commission | 1954–1987 |
| Planned | 6 |
| Completed | 6 |
| Scrapped | 5 |
| Preserved | 1 |
| General characteristics [1][2] | |
| Type | Minesweeper |
| Displacement | 750 t (740 long tons) |
| Length | 50.29 m (165 ft 0 in) |
| Beam | 10.67 m (35 ft 0 in) |
| Draft | 2.80 m (9 ft 2 in) |
| Propulsion |
|
| Speed | 15.5 knots (28.7 km/h; 17.8 mph) |
| Crew | 72 |
| Armament | 1 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
| 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] |
- ¹ = later rebuild as hydrographic survey vessel
- ² = later rebuild as mine clearance support vessel
- ³ = later rebuild as Submarine support vessel
Citations
- ^ "Onversaagd klasse" (in Dutch). Onze Marine Vloot. Retrieved 7 December 2022.
- ^ a b van Amstel (1991), p. 115.
- ^ "Amerikaanse mijnenveger in Nederland aangekomen". Trouw (in Dutch). 21 December 1954.
- ^ Schoonoord (2012), p. 57.
- ^ "Eerste mijnenveger uit V.S. aangekomen". Nijmeegsch Dagblad (in Dutch). 21 December 1954.
- ^ a b c Roetering (1997), p. 131.
- ^ Schoonoord (2012), p. 74.
- ^ van Amstel (1991), pp. 114-117.
- ^ Raven (1988), p. 184.
- ^ van Amstel (1991), p. 89.
- ^ "Hr.Ms. Onversaagd" (in Dutch). Onze Marine Vloot. Retrieved 7 December 2022.
- ^ "Hr.Ms. Onbevreesd" (in Dutch). Onze Marine Vloot. Retrieved 7 December 2022.
- ^ "Hr.Ms. Onverschrokken" (in Dutch). Onze Marine Vloot. Retrieved 7 December 2022.
- ^ "Hr.Ms. Onvermoeid" (in Dutch). Onze Marine Vloot. Retrieved 7 December 2022.
- ^ "Hr.Ms. Onvervaard" (in Dutch). Onze Marine Vloot. Retrieved 7 December 2022.
- ^ "Hr.Ms. Waalwijk" (in Dutch). Onze Marine Vloot. Retrieved 7 December 2022.
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.