Willem van der Zaan, Dutch Minelayer

Photograph of minelayer Willem van der Zaan Fair use may apply.


Tonnage 1407 tons standard displacement
Dimensions 246'9' by 36'9" by 10'10"
75.2m by 11.2m by 3.3m
Maximum speed       15.5 knots
Complement 92
1 seaplane
Armament 2 4.7"/50 guns
2x2 40mm Bofors AA guns
4x1 0.50 machine guns
Depth charges
90 mines
2-shaft triple expansion (2200 hp)
2 Yarrow 3-drum boilers
Bunkerage 740 tons fuel oil
Range 4500 nautical miles (8300 km) at 20 knots

Radar, which was upgraded periodically.

The 40mm Bofors were removed by the British for study and replaced with 1x4 40mm pom-poms.

The Willem van der Zaan was completed in 1939 and was in most respects a quite modern ship, though her machinery appeared somewhat obsolescent. In addition to her crew, she could carry 40 midshipmen for training cruises. She escaped from Holland to England in 1940 and gave the British their first demonstration of the 40mm Bofors.  She carried a seaplane but had no catapult.  At the outbreak of war, she was at Lingga Roads off Singapore. Though already in poor repair when war broke out, with leaking boiler tubes, she survived the war.


Kehn (2008) (accessed 2009-10-26)

Worth (2001)

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