Tromp-class frigate

HNLMS Tromp in 1995
Class overview
Name:	Tromp class
Builders:	Royal Schelde Shipyard
Operators:	Royal Netherlands Navy
Succeeded by:	De Zeven Provinciën class
Built:	1971–1974
In commission:	1974–2000
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 44,000 hp (32,811 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:	Radar SPS-01, WM-25, SPG-51C Sonar CWE-610, type 162
Armament:	1 × launcher for Standard SAM (40 missiles) 1 × octuple Sea Sparrow SAM (16 missiles) 8 × RGM-84 Harpoon SSM 2 × 120 mm Bofors guns (1 twin turret – turrets were salvaged from HNLMS Gelderland , a Holland class destroyer) Triple anti-submarine torpedo tubes 1 × Goalkeeper short-range defence-system
Aircraft carried:	1 × Westland Lynx helicopter
Aviation facilities:	1 helicopter pad & hangar

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.

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. During the Cold War these ships were praised for their highly efficient capabilities in both sensors, weaponry and seakeeping often illustrated during exercises beating and surprising the opponents and their ability to stay operational even during adverse weather conditions. Though the Dutch referred to the class as frigates, they ultimately were multipurpose destroyers with high seagoing capabilities.

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.