For added convenience and assurance of quality products, DNV GL offers a database of approved service suppliers. Firms listed in these registers (Approved Service Suppliers or ApprovalFinder) have been approved for their ability and knowledge for delivering services of an adequate quality. Approval is conducted according to procedures and acceptance criteria established by our classification rules.

Service suppliers delivering services relevant to the classification of ships, offshore units or ship operations are subject to approval by DNV GL.

Acceptance of DNV and GL Approvals for service suppliers:

  • Approved service suppliers by legacy GL can be accepted for legacy DNV classed vessels.
  • Approved service suppliers by legacy DNV can be accepted for legacy GL classed vessels.

We offer approval for suppliers of the following services:

  • Ultrasonic thickness measurements of ship structures

  • Non-destructive testing for offshore projects/units

  • Ultrasonic tightness testing of hatches

  • In-water survey of ships

  • Survey and maintenance of fire extinguishing equipment and breathing apparatus

  • Service on radio communication equipment

  • Service of inflatable life rafts, inflatable life jackets, evacuation systems and more

  • Service of gas welding and cutting equipment on board

  • Examination of Ro-Ro ship bow, stern, side and inner doors

  • Survey of low location-lighting systems using photoluminescent materials

  • Sound-pressure level measurements of alarm systems

  • Service and testing of voyage data recorder

  • Resincasting of chock foundations, stern tubes, etc.

  • Vibration monitoring and diagnostics of machinery on board ships

  • Inventory List of Hazardous Materials (IHM)

  • Inspection and testing of navigational equipment and systems on board ships

  • Inspection and testing of Inventory List of Hazardous Materials (IHM)

Procedures and acceptance criteria for approval of service suppliers are provided in our approval programmes. After completion of the approval process, an approval certificate is issued, and the service supplier is included in our database of approved service suppliers.

Contact us

If you want to learn more about our approval programmes for service suppliers, please contact your nearest DNV GL office. Our experts in Hamburg and Oslo are also happy to support you.