| tiers | |
|---|
| categories | | "WEG" |
| "Naval Watercraft" |
| "Minehunters" |
| "Netherlands" |
| "Tier3" |
|
|---|
| notes | "In the Royal Netherlands Navy, the Tripartites are known as the Alkmaar class. The Alkmaars were originally of similar design to the Belgian and French versions, with a standard displacement of 520 tonnes (510 long tons) and 553 tonnes (544 long tons) at full load. The displacement later increased to 571 tonnes (562 long tons) standard and 605 tonnes (595 long tons) at full load and then 630 tonnes (620 long tons) standard and 660 tonnes (650 long tons) at full load. The 20 mm gun that was initially mounted was removed, leaving only three 12.7 mm machine guns. Beginning in 2003, the remaining Dutch Alkmaar-class minehunters were upgraded with improved electronics, including Atlas Elektronik INCMS combat data system, Thales 2022 Mk III hull-mounted sonar, Atlas Seafox Mine Identification and Disposal System and a Double Eagle Mk III Mod 1 ROV.
The minehunters were constructed at the Van der Giessen-de-Noord yard in Amsterdam, a specially constructed site completed in 1978. Middelburg and Hellevoetsluis were optioned by Egypt, but due to financial issues, were instead completed for the Royal Netherlands Navy. Two ships of a modified design were built for the Indonesian Navy which led to the delay of Vlaardingen and Willemstad's construction.
Ships in class (Netherlands)
In 2000, three ships (Alkmaar, Delfzijl and Dordrecht) were withdrawn from service, followed by two more (Harlingen and Scheveningen) in 2003. All five were sold to Latvia with handovers beginning in 2007. Four more ships, (Haarlem, Maasluis, Middelburg and Hellevoetsluis) were decommissioned in 2011 following a series of deep budget cuts to the navy." |
|---|
| dateOfIntroduction | 1983 |
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| countryOfOrigin | "Netherlands" |
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| proliferation | "Netherlands" |
|---|
| selectedregions | |
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| checkedregions | |
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| checkedcountries | |
|---|
| dis | | name | "MHC ALKMAAR TRIPARTITE CLASS LVA" |
|---|
| string | "01.03.254.008.003.000.000" |
|---|
|
|---|
| images | | "Alkmaar_class(D).jpg" |
| "Alkmaar_class(E).jpg" |
|
|---|
| sections | | name | "System" |
|---|
| properties | | name | "Alternative Designation" |
|---|
| value | "Tripartite Class" |
|---|
|
| name | "Type" |
|---|
| value | "Minehunter" |
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|
| name | "Builder" |
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| value | "Béliard Shipyard" |
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|
| name | "Crew" |
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| value | "The complement of the Belgian ships varies between 33 and 46 depending on mission." |
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|
| name | "Mine Warfare System" |
|---|
| value | "Mine countermeasures equipment originally included two PAP-104 Mark 4 remote-controlled submersibles, EVEC 20 plot table, autopilot, Toran and Sydelis radio navigation aids, as well as the Decca HiFix Mark 6 precision navigation system. The mine-detection range of the sonar is greater than 1,640 ft (500 m). An autopilot system is provided. Starting in 1999, the class was fitted with new Consilium Selesmar NN 950 navigational radars." |
|---|
|
| name | "Divers" |
|---|
| value | "When minehunting, the Belgian vessels carry six divers and can have a portable decompression chamber installed abaft the forecastle break." |
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|
|
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|
| name | "Dimensions" |
|---|
| properties | | name | "Length" |
|---|
| value | "51.6 m" |
|---|
|
|
|
| name | "Displacement, Standard" |
|---|
| value | "510 tons" |
|---|
|
| name | "Displacement, Full Load" |
|---|
| value | "540 tons" |
|---|
|
|
|---|
|
| name | "Propulsion System" |
|---|
| properties | | name | "Engine Name" |
|---|
| value | "1 x Brons-Werkspoor A-RUB 215 x 12 diesel" |
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|
| name | "Engine Type" |
|---|
| value | "Diesel" |
|---|
|
| name | "Engine Power" |
|---|
| value | "1,900 total bhp; 1 shaft" |
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|
| name | "Auxiliary Power" |
|---|
| value | "2 x 120-shp ACEC active rudders (for minesweeping)" |
|---|
|
| name | "Bow-Thrusters" |
|---|
| value | "2 x 75-shp bow-thrusters" |
|---|
|
| name | "Maximum Speed" |
|---|
| value | "15 kts (7 kts hunting)" |
|---|
|
| name | "Maximum Range" |
|---|
| value | "3,500 nm at 10 kts" |
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|
| name | "Endurance" |
|---|
| value | "15 days" |
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|
|
|---|
|
| name | "Gun Weapon Systems" |
|---|
| sections | | name | "Gun Weapon System #1" |
|---|
| properties | | name | "Name" |
|---|
| value | "20 mm modèle F2 gun" |
|---|
|
| name | "Type" |
|---|
| value | "Naval Gun" |
|---|
|
|
| name | "Quantity" |
|---|
| value | "1 x 20 mm modèle F2 gun" |
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|
|
| name | "Weight" |
|---|
| value | "332 kg (732 lb) (without ammunition)" |
|---|
|
| name | "Action" |
|---|
| value | "Gas unlocked, delayed blowback[1" |
|---|
|
| name | "Elevation" |
|---|
| value | "−15° to + 65°" |
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|
| name | "Rate of Fire" |
|---|
| value | "720 round/min" |
|---|
|
| name | "Muzzle Velocity" |
|---|
| value | "1,050 m/s" |
|---|
|
| name | "Effective Firing Range" |
|---|
| value | "1,500 m (4,900 ft) against aerial targets" |
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|
|
|---|
|
| name | "Gun Weapon Systems #1 Ammunition" |
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| properties | |
| name | "Caliber" |
|---|
| value | "20" |
|---|
| units | "mm" |
|---|
|
| name | "Cartridge" |
|---|
| value | "20×139mm" |
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|
| name | "Basic Load" |
|---|
| value | "INA" |
|---|
|
|
|---|
|
|
|---|
|
| name | "Fire Control Systems" |
|---|
| properties | |
| name | "Computerized FCS" |
|---|
| value | "No" |
|---|
|
| name | "Combat Data System" |
|---|
| value | "They are equipped with an Atlas Elektronik IMCMS combat data system." |
|---|
|
|
|---|
|
| name | "Radar Systems" |
|---|
| properties | | name | "Navigation Radar" |
|---|
| value | "1 x Decca TM 1229C navigation; or
1 x Consilium Selesmar NN 950 navigation radar" |
|---|
|
|
|---|
|
| name | "Sonar Systems" |
|---|
| properties | | name | "Hull Mounted Sonar" |
|---|
| value | "1 x Thales TSM-2022 Mk II hull-mounted HF Sonar" |
|---|
|
| name | "Minehunting Sonar" |
|---|
| value | "1 x Thales PVDS Minehunting Sonar" |
|---|
|
|
|---|
|
| name | "Protection" |
|---|
| properties | | name | "Active Protection System" |
|---|
| value | "INA" |
|---|
|
| name | "Countermeasures" |
|---|
| value | "INA" |
|---|
|
| name | "NBC Water Washdown System" |
|---|
| value | "Yes" |
|---|
|
|
|---|
|
|
|---|
| variants | | name | "Alkmaar" |
|---|
| notes | "Commissioned: 1983
Status: Decommissioned in 2000, sold to Latvia" |
|---|
|
| name | "Delfzijl" |
|---|
| notes | "Commissioned: 1983
Status: Decommissioned in 2000, sold to Latvia" |
|---|
|
| name | "Dordrecht" |
|---|
| notes | "Commissioned: 1983
Status: Decommissioned in 2000, sold to Latvia" |
|---|
|
| name | "Haarlem" |
|---|
| notes | "Commissioned: 1984
Status: Decommissioned in 2011" |
|---|
|
| name | "Harlingen" |
|---|
| notes | "Commissioned: 1984
Status: Decommissioned 2003, sold to Latvia" |
|---|
|
| name | "Scheveningen" |
|---|
| notes | "Commissioned: 1984
Status: Decommissioned 2003, sold to Latvia" |
|---|
|
| name | "Maasluis" |
|---|
| notes | "Commissioned: 1984
Status: Decommissioned in 2011" |
|---|
|
| name | "Makkum" |
|---|
| notes | "Commissioned: 1985
Status: Active" |
|---|
|
| name | "Middelburg" |
|---|
| notes | "Commissioned: 1986
Status: Decommissioned in 2011" |
|---|
|
| name | "Hellevoetsluis" |
|---|
| notes | "Commissioned: 1987
Status: Decommissioned in 2011" |
|---|
|
|
|
|
|
|
|
|---|
| type | "WEG" |
|---|
| version | 1 |
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