Dreg I-class hydrographic survey vessel
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Royal Netherlands Navy_Foto_Nederlands_Instituut_voor_Militaire_Historie,_Den_Haag.jpg) Dreg IV | |
| Class overview | |
|---|---|
| Name | Dreg I class |
| Builders | De Groot & Van Vliet, Slikkerveer |
| Operators | Royal Netherlands Navy |
| Built | 1949–1950 |
| In service | 1950–1986 |
| Planned | 4 |
| Completed | 4 |
| General characteristics [1] | |
| Type | Hydrographic survey vessel |
| Displacement | 48 t (47 long tons) |
| Length | 20 m (65 ft 7 in) |
| Beam | 4.40 m (14 ft 5 in) |
| Draft | 1.40 metres (4 ft 7 in) |
| Propulsion |
|
| Speed | 10 knots (19 km/h; 12 mph) |
| Crew | 4 |
The Dreg I class[a] was a ship class of four hydrographic survey vessels that were built in the Netherlands for the Royal Netherlands Navy (RNN).[2] They served in the RNN between 1950 and 1986.[3]
The hydrographic survey vessels of the Dreg I class were all built at the shipyard of De Groot & Van Vliet in Slikkerveer.[2]
For surveying the vessels were equipped with echo sounders and marker buoys that were shaped as spheres.[4]
Service history
In November 1950 two vessels of the Dreg I class were transported from the Netherlands to Dutch New Guinea by ship.[5] 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.[3]
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.[6]
In 1966 three Dreg I-class survey vessels were used to map a part of the IJsselmeer between Staveren and Lemmer.[4]
In 1970 three hydrographic survey vessels of the Dreg I class were sold.[7][8]