The Onversaagd class was a ship class of six minesweepers that were built in the United States for the Royal Netherlands Navy (RNN).Schoonoord (2012), p. 57. They were paid for by the United States under the Mutual Defense Assistance Program (MDAP). The minesweepers were based on the design of the and taken into service of the RNN between 1954 and 1955.Roetering (1997), p. 131.

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. Furthermore, the ships had a single 40 mm gun. In addition, the minesweepers were equipped with a prototype of the UQS-1, but this mine avoidance sonar did not meet expectations.

While the Onversaagd-class minesweepers had a range of , 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.Schoonoord (2012), p. 74.

Ships in class + Onversaagd-class construction datavan Amstel (1991), pp. 114-117.Raven (1988), p. 184.van Amstel (1991), p. 89. Hull number Name Builder Laid down Launched Commissioned Decommissioned Fate Notes M884 / A854 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 M885 / A855 ² Astoria Marine Construction 8 December 1952 7 November 1953 21 September 1954 28 May 1982 M886 / A856 ³ Peterson Builders 19 February 1952 17 January 1953 22 Juli 1954 12 February 1987 Museum ship in Vlissingen M887 / A857 ² Boston Naval Shipyard 27 February 1953 2 May 1953 23 September 1954 1 October 1971 Sold for scrap to Ross & Sons in 1975 M888 / A858 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 M889 / A859 ² Peterson Builders 17 February 1952 22 August 1953 22 November 1954 26 February 1965 Sold for scrap to the firm Mantel in 1984

¹ = later rebuild as hydrographic survey vessel ² = later rebuild as mine clearance support vessel ³ = later rebuild as Submarine support vessel

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