M-Class (1977)

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Ship data
Ship type Pilot station ship
Shipyard Vuyk Scheepswerven, Capelle aan den IJssel
Construction period 1976 to 1978
Units built 3
Ship dimensions and crew
59.00 m ( Lüa )
55.73 m ( Lpp )
width 10.60 m
Side height 5.71 m
Draft Max. 3.71 m
measurement 871 GT / 261 NRZ
crew 15th
Machine system
machine diesel-electric
1 × electric motor (Smit (Holec))
performanceTemplate: Infobox ship / maintenance / service format
1,060 kW (1,441 hp)
13 kn (24 km / h)
3 × diesel generator
powerTemplate: Infobox ship / maintenance / service format
1,401 kW (1,905 hp)
propeller 1
Transport capacities
Load capacity 800 dw
Classifications Nederlandse Scheepvaartinspectie

The M-class was a class of pilot station ships of the Nederlands Loodswezen. The ships were replaced by the P-class pilot station ships between 2012 and 2014 and then sold.


The ships are powered by diesel-electric technology . The propulsion is done by an electric motor from the manufacturer Smit (Holec) with 1060  kW power , which acts on a propeller . The ships reach around 13  kn . They are equipped with an electrically powered bow thruster with an output of 304 kW.

Three diesel generator sets are available for power generation, each consisting of a six-cylinder , four-stroke diesel engine from the manufacturer Stork Werkspoor (type: Dro 216 K) with an output of 497  kW, as well as a direct current generator with 380  kVA from the manufacturer Smit-Holec and a three-phase generator with 180 kVA from the manufacturer Heemaf exist. An emergency generator is also available. A DAF diesel engine (type: DU825) with 90 kW power drives a Heemaf generator.

There was space for a total of 49 people on board the pilot station ships. The crew of the ships consisted of 15 people. The ships were each on station for a week before calling at their base port for bunkering , equipping with consumables and changing crew.

The ships were approved for coastal travel up to 200  nautical miles off the Dutch coast. They were equipped with a tender boat on both sides with which the pilots could be transferred. The tender boats were lowered into the water using a davit and taken back on board.


Building name Build number IMO number delivery Later names and whereabouts
Mirfak 878 7605677 May 1977 Sold to the UK in 2013
Menkar 879 7605689 October 1977 Sold to a private security and military company in the UK in 2014; Used as a safety and transfer ship in the Gulf of Aden.
Markab 880 7605691 June 1978 Sold to Germany in 2013, converted into an offshore safety vessel, later resold to Great Britain to a private security and military company; Used as a safety and transfer ship in the Red Sea.

The aft ship of the Markab was built under construction number 357 at the Amels shipyard in Makkum .

The ships are named after stars - Mirfak , Menkar and Markab .


Web links

Commons : M class  - collection of pictures, videos and audio files

Individual evidence

  1. a b c d e Auk Boom: Over loodsen en beloodsen , September 2009 (PDF, 348 kB). Retrieved June 20, 2018.
  2. Menkar , Zeeschepen op het Haringvliet. Retrieved June 20, 2018.
  3. Markab , Zeeschepen op het Haringvliet. Retrieved June 20, 2018.
  4. Sale pilot station vessel Mirfak , Damen Trading & Chartering, November 4, 2013. Accessed June 20, 2018.
  5. Sale pilot station vessel Menkar , Damen Trading & Chartering, November 3, 2014. Accessed June 20, 2018.
  6. a b Transfer Vessels , Ambrey. Retrieved June 20, 2018.
  7. Sale pilot station vessel Markab , Damen Trading & Chartering, May 14, 2013. Accessed June 20, 2018.
  8. Markab ( Memento from January 11, 2017 in the Internet Archive ), Antares Charter.
  9. Loodsboot-eighth chip "Markab" , Stichting Ald Makkum eo Accessed on 21 June 2018th