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	1975–2000
Completed	2
Retired	2
General characteristics
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	2 shaft COGOG Rolls-Royce Olympus gas turbine 54,000 hp (40,268 kW) Rolls-Royce Tyne gas turbine 8,200 hp (6,115 kW)
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 launcher for RGM-84 Harpoon SSM 2 × 120 mm Bofors guns (1 twin turret – turrets were salvaged from HNLMS Gelderland , a Holland class destroyer) 2 × 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

Tromp in convoy with several others in 1992.

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

• HNLMS Tromp (F803)
• Maarten Tromp

References

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.