The Dreg I class was a ship class of four hydrographic survey vessels that were built in the Netherlands for the Royal Netherlands Navy (RNN).Raven (1988), p. 190. They served in the RNN between 1950 and 1986.van Amstel (1991), pp. 90-91.
Design and construction The hydrographic survey vessels of the Dreg I class were all built at the shipyard of De Groot & Van Vliet in Slikkerveer.
For surveying the vessels were equipped with echo sounders and marker buoys that were shaped as spheres.
Service history In November 1950 two vessels of the Dreg I class were transported from the Netherlands to Dutch New Guinea by ship. In total three survey vessels of the Dreg I class (Dreg I, Dreg II and Dreg III) served in Dutch New Guinea till 1 October 1962.
In 1963 the Dreg I-class hydrographic survey vessels were active in the North Sea to collect data that would help determine the safest waterway to the Europoort.
In 1966 three Dreg I-class survey vessels were used to map a part of the IJsselmeer between Staveren and Lemmer.
In 1970 three hydrographic survey vessels of the Dreg I class were sold.
Ships in class
+ Dreg I-class construction data Ship Pennant No.Laid downLaunchedCommissionedDecommissioned Fate A909 15 May 1950 17 July 1950 6 April 1970 Sold to C. Houkoop on 6 October 1970. A910 15 May 1950 17 July 1950 6 April 1970 Sold to P. Peetoom on 6 October 1970. Later rebuild as yacht. A919 14 December 1949 21 August 1950 18 September 1950 6 April 1970 Sold to C.P. Vader on 6 October 1970. Later taken over by the shipping company Waterweg. A920 14 December 1949 21 August 1950 25 September 1950 Gifted to Stichting Onderwaterschatten Zeeland on 23 March 1987.
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