Tromp-class frigate

The Tromp class were two frigates built for the Royal Netherlands Navy during the 1970s to replace the De Zeven Provinciën-class cruisers as squadron flagships.

HNLMS Tromp in 1995
Class overview
Name: Tromp class
Builders: Koninklijke Maatschappij De Schelde
Operators:  Royal Netherlands Navy
Preceded by: De Zeven Provinciën-class
Succeeded by: De Zeven Provinciën class
Built: 1971–1974
In commission: 1974–2000
Completed: 2
Retired: 2
General characteristics [1]
Type: Frigate
Displacement:
  • 3,665 long tons (3,724 t) standard
  • 4,308 long tons (4,377 t) full load
Length: 133.2 m (437 ft 0 in)
Beam: 14.8 m (48 ft 7 in)
Draught: 6.6 m (21 ft 8 in)
Propulsion:
Speed:
  • 28 knots (32 mph; 52 km/h) maximum
  • 18 knots (21 mph; 33 km/h) cruising
Range: 5,000 nmi (9,300 km) at 18 kn (21 mph; 33 km/h)
Complement: 306
Sensors and
processing systems:
  • AN/SPS-01 3D air search radar
  • Decca 1226 navigation radar
  • WM-25 fire control radar
  • AN/SPG-51C fire control radar
  • CWE-610 bow sonar
  • Type 162 bottom search sonar
Electronic warfare
& decoys:
  • RAMSES jammer
  • Mk.36 SBROC
Armament:
  • 1 × Mark 13 launcher for Standard SAM (40 reload missiles)
  • 1 × Mark 29 (octuple) Sea Sparrow SAM (16 missiles)
  • 8 × Mark 141 laucher for RGM-84 Harpoon SSM
  • 2 × 120 mm Bofors guns (1 twin turret – turrets were salvaged from HNLMS Gelderland , a Holland class destroyer)
  • 2 x Triple anti-submarine torpedo tubes
  • 1 × Goalkeeper short-range defence-system
Aircraft carried: 1 × Westland WG-13 Lynx Mk.25/27/81/SH-14D maritime helicopter
Aviation facilities: 1 helicopter pad & hangar
De Ruyter moored next to HMS Belfast during a visit to London in 1980

The Tromp-class frigates entered service in 1975 and 1976 and served until 1999 and 2001. Both ships were built by Royal Schelde Shipyard in Flushing (Vlissingen). The ships served as fleet flagships and area air defence vessels. Their 3D radar under a large polyester radome, gave the ships the nickname "Kojak" in the Netherlands Navy. Originally the ships were to have the British Sea Dart missile system, but this was changed to the more compact American Standard surface-to-air missile.

The ships were replaced by the De Zeven Provinciën-class frigates. A total of four new frigates have been built, including two also named Tromp and De Ruyter.

Ships
Name Pennant Builder Laid down Launched Commissioned Fate
Tromp F801 KM de Schelde, Vlissingen 4 August 1971 2 June 1973 3 October 1975 decommissioned 1999. Her gun has been preserved by the Dutch Navy Museum.
De Ruyter F806 KM de Schelde, Vlissingen 22 December 1971 9 March 1974 3 June 1976 decommissioned 2001. Her bridge and radar have been preserved by the Dutch Navy Museum in Den Helder, North Holland.

See also

References
  1. Conway's All the World's Fighting Ships 1947–95

Bibliography
  • van Amstel, W.H.E. (1991). De schepen van de Koninklijke Marine vanaf 1945. Alkmaar: De Alk. ISBN 9060139976.
  • Visser, Arie; Lemmers, Alan (2014). De vloot getekend: de scheepsklassen van de Koninklijke Marine na 1945. Franeker: van Wijnen. ISBN 9789051944891.

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