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HNLMS Jacob van Heemskerck - Tromps Half-sister adopted by the UK navy


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Originally designated as a flotilla leader and a torpedo cruiser in Decker's Fleet Plan of 1931, she was hastily commissioned on 10 May 1940, when Germany invaded the Netherlands. However, as she was not armed she escaped to the United Kingdom, where she was refitted as an air defence cruiser, since these were the only type of gun available, and there was a growing need for this type of ship to protect the convoys. During the Second World War the crew felt that their ship was blessed and gave her the nickname Oude Jacob (Old Jacob). She received the reputation for proficiency, and not a single convoy ship would be lost when she was on duty.



NameJacob van Heemskerck

NamesakeJacob van Heemskerk

BuilderNederlandsche Scheepsbouw Mij., Amsterdam; completed in British yard

Laid down31 October 1938

Launched16 September 1939

Completed10 May 1940

Commissioned16 September 1939

Decommissioned20 November 1969

Stricken27 February 1970

FateSold for scrap, 23 June 1970

General characteristics

Class and typeTromp-class light cruiser

Displacement4,150 t (4,084 long tons) standard 4,860 t (4,783 long tons) full load

Length132 m (433 ft 1 in)

Beam12.4 m (40 ft 8 in)

Draught4.3 m (14 ft 1 in)


2 Parsons geared steam turbines

4 Yarrow boilers

2 shafts

56,000 shp (41,759 kW)

Speed32.5 knots (37.4 mph; 60.2 km/h)

Complement393 or 420


10 × 102 mm (4 in) guns (5×2)

8 × 40 mm (4×2)

8 × 20 mm AA cannon

2 × depth charge rails


Belt: 2–2.5 in (51–64 mm)

Deck: 1.5 in (38 mm)



Text and image from wikipedia.org



Edited by kriegerfaust
Edited for addition of referenced material
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Nice ship, but (of course) no torpedo tubes, which presents a problem for a Destroyer! She could have some improved pen, like the Japanese 100mm ships, I suppose.


She could potentially fit at Tier X in an RN/Associates 4 inch armed DD line (which could include ships from the  like Blyska '41, Athabaskan II, Ould Jacob, etc).

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