Karel Doorman-class frigate

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HNLMS Van Amstel (F831)
Class overview
Name	Karel Doorman class
Builders	Damen Schelde Naval Shipbuilding
Operators	Royal Netherlands Navy  Belgian Navy  Chilean Navy  Portuguese Navy
Preceded by	Netherlands: Kortenaer class / Roofdier class Belgium: Wielingen class Portugal: João Belo class
Succeeded by	Netherlands & Belgium: ASWF class
Cost	ƒ445 million per unit[1]
Built	1985–1995
In commission	1991–present
Completed	8
Active	7
Laid up	1
General characteristics
Type	Multi-purpose frigate
Displacement	3,320 tons
Length	401 feet (122 m)
Beam	47 feet (14 m)
Draught	20 feet (6.1 m)
Propulsion	CODOG-propulsion 2 × Rolls-Royce Spey 1A, 16,700 hp (12.4 MW) gas turbines 2 × Stork-Werkspoor 12SW280- 4,895 hp (3.7 MW) + 4 Stork DRO 218K diesel engines
Speed	30 knots (56 km/h)
Complement	154
Sensors and processing systems	Thales Smart-S Mk.1 long-range 3D surveillance and tracking radar Thales LW08 long-range surveillance radar Thales SeaWatcher 100 active phased array surface detection and tracking radar (NLD and BE ships only) Thales GateKeeper Electro-optical 360° survaillance system (NLD and BE ships only) Thales STIR 1.8 Tracking and Illumination Radar system Thales Scout surface surveillance and tactical navigation radar Thales PHS-36 hull-mounted sonar Thales Anaconda DSBV 61 VLF passive tactical towed array sonar Ultra Electronics Multi-static Low Frequency Active Passive Sonar (NLD ships only)
Electronic warfare & decoys	Thales Vigile APX Radar electronic support measures Mark 36 SRBOC
Armament	16 × RIM-7 Sea Sparrow anti-air VLS 8 × Boeing Harpoon anti-ship missile 2–6 × FN MAG 7.62 mm machine gun 2–4 × Browning M2 12.7 mm machine gun 2 × Twin-Mark 46 torpedo tubes 1 × OTO Melara 76 mm gun 1 × Goalkeeper CIWS
Aviation facilities	Hangar and flight deck

The Karel Doorman-class frigates are a series of eight multi-purpose vessels built for the Royal Netherlands Navy. Its namesake is Karel Doorman, a Dutch naval officer whose ship was struck by a Japanese torpedo in the Battle of the Java Sea in 1942, and went down with his ship as a result.