De Zeven Provinciën-class frigate

	HNLMS Tromp
Class overview
Name	De Zeven Provinciën class
Builders	Damen Schelde Naval Shipbuilding
Operators	Royal Netherlands Navy
Preceded by	Tromp class; Jacob van Heemskerck class;
Succeeded by	Future Air Defender (planned)
Cost	€600 million ($680 million) per unit
In commission	2002–present
Completed	4
Active	4
General characteristics
Type	Air-defense and command frigate
Displacement	6,050 tonnes (full load)
Length	144.24 m (473 ft 3 in)
Beam	18.80 m (61 ft 8 in)
Draught	5.18 m (17 ft 0 in)
Installed power	4 × Wärtsilä-Deutz D620 V12 diesel-generators, 1,680 kW (2,250 hp) each
Propulsion	Combined diesel or gas; 2 × Wärtsilä 16 V26 marine diesel engines, 5.1 MW (6,800 hp) each; 2 × Rolls-Royce Marine Spey SM 1C gas turbines, 19.5 MW (26,100 hp) each; 2 × propeller shafts, 5-bladed controllable pitch propellers;
Speed	30 knots (56 km/h; 35 mph)
Range	4,000 nmi (7,400 km; 4,600 mi) at 18 knots (33 km/h; 21 mph)
Complement	30 officers, 202 ratings
Sensors and ; processing systems	Thales Nederland SMART-L long-range air and surface surveillance radar; Thales Nederland APAR air and surface search, tracking and guidance radar (I band); DECCA NAV navigation radar; Thales Nederland Scout (Low Probability of Intercept) surface search/navigation radar; Thales Nederland Sirius IRST long-range infrared surveillance and tracking system; Thales Nederland Mirador optical surveillance and tracking system; Atlas Elektronik DSQS-24C hull-mounted sonar; MK XII IFF system;
Electronic warfare ; & decoys	2 × Thomson Racal Sabre ECM suite; 4 × Sippican Hycor SRBOC Mk 36 launcher; 1 × AN/SLQ-25 Nixie torpedo decoy;
Armament	Guns:; 1 × Oto Melara 127 mm/54 dual-purpose gun; 2–4 × Browning M2 12.7 mm machine guns; 4–6 × FN MAG 7.62 mm machine guns; 1–2 × Goalkeeper CIWS; Missiles:; 40-cell Mk 41 vertical launching system; 32 × SM-2 IIIA surface-to-air missiles; 32 × Evolved SeaSparrow Missiles (quad-packed); 8 × Harpoon anti-ship missiles; 2 × twin Mk 32 Mod 9 torpedo launchers with Mk 46 Mod 5 torpedoes;
Aircraft carried	1 × NH-90 helicopter
Aviation facilities	Hangar and flight deck for 1 medium-sized helicopter

The four De Zeven Provinciën-class frigates are air-defence and command frigates in service with the Royal Netherlands Navy (Koninklijke Marine). This class of ships is also known as "LCF" (Luchtverdedigings- en commandofregat, air defense and command frigate). The ships are similar to the German Sachsen-class frigates in role and mission.

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