Specialist service provider in IRM and Offshore Construction using specialized subsea equipment and competent personnel for deep sea saturation diving, air/mixed gas diving, ROV operations, Survey.

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Specialist service provider with over 60 years experience in underwater maintenance and construction of  tunneling, caisons, sluices and with a special focus on underwater concreting.

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Specialist service provider in maintenance, repair and construction at hydropower dams with a special focus on engineering, sediment removal, plug/bulkhead/stop log fabrication and installation, emergency repairs. All with the use of specalist dredging and air/saturation deep dive systems.

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With its hyperbaric and wet test centre DCN can offer its clients a wide range of services from testing components to conduct welding qualifications and much more.

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Introduction to DCN Diving


DCN Diving, established in 1957 (as Vriens Diving), has over 60 years-experience in subsea operations. It is a family owned company with its head office based in the Netherlands Bergen op Zoom and supporting subsidiaries and branch offices in Belgium, Germany, UAE, Malaysia and Singapore.

DCN Diving operates as a world-wide subsea service contractor and is an IMCA member for Surface supplied diving, Saturation diving and ROV operations. DCN Diving is specialized in:

  • Hyperbaric welding and hyperbaric testing using specialized in-house experience and equipment including its Hyperbaric Test Facility in Bergen op Zoom
  • Creating dry space underwater with the use of habitats, cofferdams, bulkheads and more
  • Subsea rehabilitation of hydropower dams
  • Underwater concreting and other civil works
  • Pipelines installation dive support
  • Subsea support in the renewable energy sector
  • Vessel Inspection and Maintenance
  • Offshore subsea Inspection Repair and Maintenance (IRM)

DCN is certified according to ISO 9001:2015, ISO 14001:2015, ISO 45001, SCC** and FPAL and has various certificates (ABS, Lloyds, KR, Bureau Veritas, Rina, DNV-GL, RMS and NK class) for In-water Survey and has class certificates for its Surface Supplied and Saturation Diving systems.

DCN ISO 9001

Our Recent Projects and Updates

For a full overview, click here.

Groundbreaking New ©Micro Habitat Technology

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New GroundBreaking ©Micro Habitat Technology DCN ©Micro Habitat With the industry’s increasingly demand for having an ad-hoc / emergency repair technology on aging subsea and offshore assets in combination with…

Cofferdam Installation Project 2020

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DCN Diving is contracted by Herbosch-Kiere for the designing, fabrication and installation of a modular cofferdam. The cofferdam has a dimension of 19m width x 5m height.  The cofferdam is...

Munich Airport Tunnel Construction

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Munich Airport is connected by two S-Bahn lines from the west. The Erdinger Ringschluss is a 30.2 km long double-track railway line which will connect Freising with Erding via Munich...

Dana Unity DSV Campaign

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DCN Diving was contracted by Dana Petroleum for the fabrication and  installation of pipeline spool, IRM at Dana's Platforms (F2-A, P10-05, P11-B, P11-C, P11-01, P11-09), Replacement of New Sensors in...