|Tromp as built|
|Jacob van Heemskerck as completed|
|Name||Tromp||Jacob van Heemskerck|
|Dockyard||N.V. Nederlandsche Scheepsbouw Maatschappij, Amsterdam||N.V. Nederlandsche Scheepsbouw Maatschappij, Amsterdam|
|Laid down||January 17, 1936||October 31, 1938|
|Launched||May 24, 1937||September 16, 1939|
|Commissioned||August 18, 1938||May 10, 1940 (prematurely, trials were scheduled for June 1940)
February 11, 1941 (after refitting in UK)
|Status||Click here for her history||Click here for her history.|
|Pennants||D-28 (World War 2)
KL-2 (June 15, 1946)
C-804 (October 15, 1950)
A-878 (April 1, 1955)
|D-20 (World War 2)
KL-1 (June 15 1946)
KV-1 (January 21 1947)
C-803 (October 15, 1950)
A-879 (January 15, 1955)
|Tromp||Jacob van Heemskerck|
|Displacement||3450 tons standard|
|Crew||295, later increased to 380||420|
|Dimensions||131,95 (over all) x 12,43 x 4.32 m|
|Armament (as completed)||6 x 149 mm Bofors No. 11 (3x2)
4 x 40 mm Bofors (2x2)
4 x .50 * (2x2)
|10 x 10,2 cm Mk XVI* in Mk XIX mountings R.P.C.51 (5 x 2)
4 x 40 mm Vickers Mark 8 ("pompom") (1x4) ****
6 x 20 mm Hispano Suiza ** (6x1)
|Added AA||4 x 75 mm (US origin)
4 x 40 mm Bofors***
6 x 20 mm Oerlikon
|8 x 40 mm Bofors Mk IV in Mk IV* mounts (4x2)
8 x 20 mm Oerlikon Mk in Mk V twin mounts (4x2).
|Fire control||2 x H.A.C.S. III with R.P.C. 51 fire control systems
1 x L.A. Fire Control Table A.F.C.C. Mk VIII
2 x Mk III G.E.S. HA/LA Directors.
|Type 128 CV Asdic
2 depthchargerails with 12 depthcharges.
|Torpedoes||6 x 533 mm (2x3)
12 torpedoes *****
|Radar *** ***||Type 272 surface warning (removed February 1945)
Type 286 surface warning (removed February 1945)
Type SC4 air warning (fitted February 1945)
Type SG-1 surface warning (fitted February 1945)
Type 282 for Bofors 40 mm guns (fitted February 1945)
Type FC Mod.3 surface fire control (fitted August, 1945).
|Type 79B long range air warning with type 243 interrogator.
Type 277 Air- and surface craft warning with type 244 interrogator.
Type 293 Air- and surface craft warning with type 242 interrogator
2 x type 285 P4 for fire control main battery.
4 x Type 282 (fire conrol with each Bofors mounts)
Type 253 Identification Friend or Foe
Type 91 with type F.V.1 (radio countermeasures)
|Air||1 Fokker C 11W floatplane||-|
* These were later replaced by 2 single 20 mm-guns, in addition to the other 6 Oerlikons.
** Later replaced by 20 mm Oerlikons
*** The original design had four twins. For some reason, Tromp only received 2. Heemskerck was to be completed with all four.
****This mount was removed when the four twin Mk IV* Bofors mounts were installed..
***** Tromp initially carried Dutch tubes for V53 torpedoes, but the mounts were replaced by British in 1944/1945, for British Mark 9 torpedoes. The tubes were finally removed in 1946.
*** *** Radar fit Tromp pieced together based on available sources. Radar fit Van Heemskerck is an overview of outfit as of January, 1945.
|Turrets||25 - 12 mm|
|Side belt (amidships)||15 mm|
|Longitudinal bulkheads||20 - 30 mm|
|Main deck||25 mm|
|Lower deck||15 - 25 mm|
|Ammunition lifts||15- 25 mm|
|Boilers||4 Yarrow 3 drum|
|Machinery||2 Parsons geared steam turbines (built under license by N.V. Werkspoor, Amsterdam).|
|Max speed||32,5 knots*|
|* Tromp reached 62.160 shp and 35,06 knots on her trials.|
|Tromp-class cruisers photo special|