Tripartite-class minehunter

French Tripartite minehunter Céphée
Class overview
Name	Tripartite class
Operators	Initial  Belgian Navy  French Navy  Royal Netherlands Navy Export  Bulgarian Navy  Indonesian Navy  Latvian Naval Forces  Pakistan Navy
Succeeded by	City class Vlissingen class
Subclasses	Éridan class Alkmaar class Munsif class Pulau Rengat class
Built	1977–1995
In commission	1983–present
Planned	60
Completed	40
Cancelled	20
Active	22
Laid up	7
General characteristics of French ships as built
Type	Minehunter
Displacement	571 t (562 long tons) 605 t (595 long tons) full load
Length	51.6 m (169 ft 3 in)
Beam	8.9 m (29 ft 2 in)
Draught	3.8 m (12 ft 6 in)
Propulsion	1 × Brons-Werkspoor A-RUB 215V-12 diesel engine 1,400 kW (1,900 hp), 1 shaft 2 × 180 kW (240 hp) ACEC active rudders 1 × bow thruster
Speed	15 knots (28 km/h; 17 mph)
Range	3,000 nmi (5,600 km; 3,500 mi) at 12 knots (22 km/h; 14 mph)
Boats & landing craft carried	2 × PAP 104
Complement	55
Sensors and processing systems	1 × DUBM 21B sonar 1 × Decca 1229 navigation radar
Armament	1 × 20 mm modèle F2 gun 2 × 12.7 mm machine guns 2 × 7.62 mm machine guns

The Tripartite class is a class of minehunters developed from an agreement between the navies of Belgium, France and the Netherlands. A total of 35 ships were constructed for the three navies. The class was constructed in the 1980s–1990s in all three countries, using a mix of minehunting, electrical and propulsion systems from the three member nations. In France, where they are known as the Éridan class they are primarily used as minehunters, but have been used for minesweeping and ammunition transport in Belgium and the Netherlands, where the Tripartites are known as the Alkmaar class.

In 1992, the Pakistan Navy acquired three vessels from France, one that was already built, one to be built in France and one built in France and Pakistan. Known as the Munsif class, all three are still in service. The Indonesian Navy acquired two minehunters in the 1990s from the Dutch to a modified design. Known as the Pulau Rengat class, the two ships are still in service. In 1997, France purchased three of the Belgian vessels. In 2007, the Latvian Naval Forces acquired five ships from the Netherlands which had been taken out of service at the beginning of the decade. The Bulgarian Navy acquired a former Belgian minehunter in 2007. The Netherlands and Belgium had a competition in 2018 to build a replacement class for their Tripartite/Alkmaar-class ships.