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Netherland's flag

Netherlands' Tromp class cruiser

Photos

HNMLS Jacob van Heemskerck in August 1942:
HNMLS Jacob van Heemskerck in August 1942
Imperial War Museum, A-12922
HNMLS Tromp in 1936:
HNMLS Tromp in 1936
Royal Netherlands Navy

Design

The Tromp class were to be destroyer flotilla flagships and to make the Dutch East Indies fleet stronger. They were authorized to be built in 1931 / 1935.

To help make the Tromp class fast the armor was designed to be thinner.

Aircraft

As there was no catapult the Fokker C.VIX floatplane had to be lowered into the water to take off.

Armament

  Elevation Rounds Carried
5.9", 12 cm 60° 12,000

Engines

The forward boiler room powered the starboard shaft and the aft boiler room powered the port shaft.

Ships

HNMLS Jacob van Heemskerck

  • Manufacturer: Nederlandse, Nederlandsche Scheepsbouw Mij. at Amsterdam, NSM at Amsterdam
  • October 31, 1938: Laid down.
  • September 16, 1939: Launched.
  • May 10, 1940: Completed in Britain.
  • May 14 - 15, 1940: Sailed for Britain. Only had six 20 mm Hispano-Suiza guns for armament.
  • June 1940: With NMLS Sumatra sailed to Canada.
  • 1940 - February 1941: Refit at Portsmouth. Converted into anti-aircraft cruiser.
  • February 1941 - January 1942: Irish Sea and Atlantic Ocean.
  • January 1942: East Indies. Joined British Eastern Fleet.
  • September 1942: Invasion of Madagascar.
  • November 27, 1942: Captured German blockade runner Ramses.
  • January - June 1944: Mediterranean.
  • July - December 1944: Refit at Cammell Laird. 2 pdr removed. Four 40 mm Hazemeyer twin mounts added. Four 20 mm twin mounts replaced 20 mm Hispano-Suiza guns.
  • December 1944 - June 1945: Mediterranean.
  • June 1945: First ship to enter Amsterdam.
  • September 1945: Sailed to Far East but war over before arriving.

HNMLS Tromp

  • Manufacturer: Nederlandse, Nederlandsche Scheepsbouw Mij. at Amsterdam, NSM at Amsterdam
  • January 17, 1936: Laid down.
  • May 24, 1937: Launched.
  • August 18, 1938: Completed.
  • November 1938: Cruises to Britain and Italy.
  • April 1939: Fleet Review in Rotterdam.
  • August 19, 1939: East Indies.
  • May 10, 1940: Convoy escort in Indian Ocean and southwest Pacific Ocean.
  • February 1, 1942: Member of Allied Striking Force (ABDA squadron).
  • February 3, 1942: Sailed to intercept Japanese transports heading for Balikpapan but turned back when intercepted by aircraft.
  • February 18, 1942: Damaged by IJN Arashio while trying to intercept Japanese transports heading for Bali.
  • February 23, 1942: Sailed to Australia for repairs.
  • March - June 1942: Repairs in Sydney. Two 3" guns and six 20 mm guns added.
    Two 3", two 40 mm twin mounts, six 20 mm guns, two 0.5" machine gun twin mounts, and four 7.7 mm machine guns in total.
  • June 1942 - December 1943: Escort duty around Australia and Indian Ocean.
  • November 1943: Two 3" guns added. 0.5" twin mounts replaced by four 0.5" Browning machine guns. 7.7 mm machine guns removed.
  • January 1944: Member British Eastern Fleet based at Trincomalee.
  • July 25, 1944: Attack on Sabang. Hit by four shells from shore batteries.
  • 1945: Escort for Rangoon invasion.
  • May 10, 1945: Member of TF60 sent to intercept IJN Haguro.
  • May 24, 1945: Member of US 7th Fleet.
  • May 24 - June 14, 1945: Sailed to Morotai to join TF74.2.
  • June - July 1945: Supported Balikpapan invasion.
  • September 16, 1945: At Japanese surrender in Jakarta.

Specifications

  Tromp class
Crew 309, 380
Displacement 3,450 tons, 3,787 tons, 4,150 tons
Displacement - Loaded 4,800 tons, 4,860 tons
Physical Characteristics  
Length 433'
131.97 m, 132 m
Length - Water Line  
Length - Between Perpendiculars 410' 1", 426' 6"
125 m, 130 m
Beam 40' 8", 40' 9"
12.4 m, 12.43 m
Draft / Height 13' 9", 14' 2", 15'
4.2 m, 4.64 m
Performance  
Speed 32.5 knots
Range at 12 knots 6,000 nautical miles
Armament 5.9" twin turrets, 5.9" L/50 Bofors, 15 cm L/50 twin turrets: 3, 6
Anti-Aircraft 2 pdr / 40 mm Bofors, 40 mm Hazemeyer twin mounts, 40 mm Bofors twin mounts: 2, 4, 8
20 mm Oerlikon: 2
0.5" machine guns twin mounts, 12.7 mm machine gun twin mounts: 2
Depth Charge Launchers 4
Torpedoes 21", 53.3 cm: 2 mounts 3 tubes each
Aircraft 1
Armor  
Belt - Main 2" - 2.5"
1.5 cm, 1.6 cm
Bulkheads 2 cm - 3 cm
Control Tower 1.2 cm
Deck 1.5"
1.5 cm - 2.5 cm
Gun Shields 1.5 cm
Engines  
Boilers Yarrow: 4
Shafts 2
Turbines Parsons geared
HP 56,000
Oil 860 tons
  Jacob van Heemskerck
Crew 420
Displacement  
Displacement - Loaded  
Physical Characteristics  
Length  
Length - Water Line  
Length - Between Perpendiculars  
Beam  
Draft / Height  
Performance  
Speed  
Range  
Armament 4", 4" Mk XVI twin mounts, 4" HA/LA twin mounts: 5, 10
Anti-Aircraft 2 pdr quad mount, 2 pdr pompoms quad mount, 2 pdr / 40 mm Bofors: 1, 8
20 mm, 20 mm Hispano-Suiza, 20 mm Oerlikon: 6, 8
Depth Charge Launchers 2
Torpedoes None
Aircraft None
Armor  
Belt - Main  
Deck  
Turrets  
Engines  
Boilers  
Shafts  
Turbines  
HP  
Oil  

Sources:

  1. Cruisers of World War Two An International Encyclopedia, M. J. Whitley, 1995
  2. Conway's All the World's Fighting Ships 1922-1946, Robert Gardiner, 1987
  3. Janes' Fighting Ships of World War II, 1989
20th Century American Military History Crucial Site