M-class minesweeper (Netherlands)

HNLMS M 1
Class overview
Builders: Van der Kuyk & Ree
Fa. Koopman
J & A van der Schuyt
Operators:  Royal Netherlands Navy
 Kriegsmarine
Completed: 4
Lost: 1
General characteristics
Type:Minesweeper
Displacement:M1: 328 t (323 long tons)
M2: 205 t (202 long tons)
M3 & M4: 230 t (226 long tons)
Length:30 m (98 ft 5 in) (approx.)
Propulsion:M1 & M2: 500 hp (373 kW) engine
M3 & M4: 450 hp (336 kW) engine
Speed:M1: 9.5 knots (17.6 km/h; 10.9 mph)
M2, M3 & M4: 10 knots (19 km/h; 12 mph)
Complement:16
Armament:2 x 12.7 mm machine guns

The M class were the first minesweepers of the Royal Netherlands Navy. The need for minesweepers for the Dutch marine came during the First World War when sea mines where laid in great numbers.

The Navy converted four tugboats into minesweepers. The ships were built by three different shipyards; Van der Kuyk & Ree in Rotterdam, Fa. Koopman in Dordrecht, and J & A van der Schuyt in Papendrecht.

The ships were still in service during the Second World War. None of the ships were able to escape to the United Kingdom, and three of the four ships fell in German hands (M 3 was scuttled). After the war M 1 and M 4 were returned to the Netherlands, and re-entered service as tugboats.

Ships in class

Source