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.

[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.