Zr. Ms. Karel Doorman
Provided byHeinen & Hopman
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HVAC & PCP | Joint Support Ship Karel Doorman

The Joint Support Ship here is the Zr. Ms. Karel Doorman, and has been built for the Royal Dutch Navy in 2014 by Damen Schelde Naval Shipbuilding. Heinen & Hopman is responsible for the engineering, supply, installation and commissioning of the whole HVAC system as well as the NBC filtration onboard.

Description of the project

The JSS Karel Doorman was designed by Damen Schelde Naval Shipbuilding for the Royal Netherlands Navy to operate consistently well in all sea conditions. This Joint Support Sip is approximately 205 metres long and 30 metres wide.

The vessel’s main purpose is strategic transport, Replenishment at Sea of other ships and sea basing. Karel Doorman accommodates 175 crew and up to 125 non-listed personnel, such as helicopter crews and medical teams. A fully equipped Role 3 Hospital is installed to support operations.

The JSS comprises 2,000 lane metres for the transport of materials, a helicopter deck with landing spots for two Chinooks and a hangar with a storage capacity of up to six helicopters. 
In addition, there are facilities to load and unload operational materials and goods in harbour, offshore or on the open sea; two Replenishment At Sea masts, a deck crane, a roll on/roll off facility for vehicles and a steel beach stern construction for accommodating cargo transfer via landing craft.

In order to reduce vulnerability, the vessel is outfitted with signature reduction measures, ballistic protection, blast-resistant constructions, redundant and shock-resistant systems, a gas citadel and extensive fire-fighting systems.


Technical challenges included

  • Shock, vibration and EMC requirements
  • Vulnerability requirements for certain systems
  • Decontamination rooms and airlocks
  • Galley/bakery
  • Ammunition rooms
  • Dangerous goods stores
  • Workshops
  • Vehicle deck and hangar ventilation

Citadel arrangements to keep the vessel safe from nuclear, biological and chemical attacks
Role 3 Hospital, including complete operating rooms, quarantine areas, triage and dentist
Equipment cooling in the Thales integrated mast module.

Organisational and logistical challenges included

  • Vessel was partly built in Romania and partly in the Netherlands.
  • Size of the vessel and the high number of (sub) systems required extensive project management and intelligent engineering (database oriented design package).

Scope of work

Heinen & Hopman’s scope of work for the JSS project comprised


Co-writing technical specifications and implementing within the vessel design the heating, ventilation and air-conditioning system (HVAC), the nuclear biological and chemical filtration system (NBC) and the provision cooling plant (PCP).


The complete design and engineering of the HVAC, NBC and PCP systems. Delivery, installation, commissioning, factory acceptance testing, harbour acceptance testing, sea-trial acceptance testing and integrated logistic support activities (manuals, training, spare parts, etc.).

Up to 75% of the vessel was constructed in Damen Shipyard Galati in Romania. Installation was handled by Heinen si Hopman Mar s.r.l. under the supervision of Heinen & Hopman Engineering. The remaining 25%, including commissioning, was carried out at Damen Schelde Naval Shipbuilding in the Netherlands.


Scope of supply 

Along with several smaller items of equipment, the following main equipment was supplied: 

  • 21 x Air-handling unit and control panel / Total 145,000 m3/hr
  • 71 x Fan-coil unit and control panel / Total 145,000 m3/hr
  • 1 x Air-cooled split unit and control panel 
  • 12 x Steam humidifier 
  • 2 x Dehumidifier 
  • 2 x Chilled water plant and control panel / Total 4,400 kW
  • 4 x Chilled water circulation pump 
  • 2 x Chilled water booster pump 
  • 14 x Gravity cooler 
  • 14 x Duct cooler 
  • 2 x Central heating boiler and control panel / Total 2,500 kW
  • 2 x Central heating circulation pump 
  • 49 x Duct heater 
  • 42 x Radiator
  • 9 x Fan heater 
  • 8 x Local heating unit 
  • 6 x NBC filter unit and control panel 

More information

Would you like to get more information about our HVAC technology for naval ships? Don't hesitate to get in touch. We are eager to inform you about the possibilities.
Contact us

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H&H Headquarters
Damen Schelde Naval Shipbuilding
Name Vessel
Karel Doorman
Royal Dutch Navy
Delivery year
Country of Delivery
The Netherlands
Vessel type
Support Ship
205.0 m
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JSS Karel Doorman

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We supplied the HVAC, NBC and PCP systems for the Karel Doorman, built for the Royal Dutch Navy.

Michel  Veltman

Michel  Veltman

Michel Veltman

- Sales Manager

Michel  Veltman

Michel Veltman

- Sales Manager

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