Van Speijk-class frigate

HNLMS Evertsen (F815) in the 1980s.
Class overview
Name	Van Speijk class
Builders	Nederlandsche Dok en Scheepsbouw Maatschappij Koninklijke Maatschappij De Schelde
Operators	Royal Netherlands Navy  Indonesian Navy
Preceded by	Van Amstel class
Succeeded by	Kortenaer class
Subclasses	Ahmad Yani class
Built	1963–1968
In commission	1967–1989 (Royal Netherlands Navy)
Completed	6
Retired	6 (all sold to Indonesia)
General characteristics
Type	Frigate
Displacement	2,200 tons standard, 2,850 tons full load
Length	113.4 m (372 ft 1 in)
Beam	12.5 m (41 ft 0 in)
Draught	5.8 m (19 ft 0 in)
Propulsion	In Dutch service 2 x geared steam turbines 22,370 kW (30,000 shp) 2 x shafts
Speed	28.5 knots (52.8 km/h; 32.8 mph)
Range	4,500 nmi (8,300 km; 5,200 mi) at 12 kn (22 km/h; 14 mph)
Complement	"before rebuild" 254, "after rebuild" 180
Sensors and processing systems	Radar: "as built" LW-02, DA-02, M45, "after rebuild" LW-03, DA-05, M45, M44[citation needed] Sonar: Types 170B, 162 Combat system: SEWACO V
Armament	"as built" 2 × 4.5-inch guns (1 × twin mounting Mk6) 2 × Seacat surface-to-air missile launcher 1 × ASW Limbo mortar "after rebuild" 1 × OTO Melara 76 mm gun 2 × Seacat surface-to-air missile launcher 8 x Harpoon anti-ship missiles 2 x Mk 32 torpedo launchers
Aircraft carried	1x Westland Wasp, later replaced by Westland Lynx
Aviation facilities	Hangar

The Van Speijk-class frigates were built for the Royal Netherlands Navy in the 1960s. They were versions of the British Leander-class frigates with Dutch radars. The British design was chosen in order to enable rapid construction in order to replace elderly destroyer escorts and take up part of the NATO patrol duties of the decommissioned anti-submarine warfare carrier Karel Doorman. The ships were modernised in the late 1970s. All six ships were sold to the Indonesian Navy in 1986–1989 and five are still in service as the Ahmad Yani-class frigates.