DNV GL rules

Shaping the future of classification

A unique blend of quality, service and experience

DNV GL is continuously developing new ways of supporting our customers to enhance safety, reduce downtime and optimize performance. With approximately 13,000 ships in class and about 2,200 ship surveyors worldwide making 15,000 on-board visits every year, we have access to one of the world’s largest fleets and an unrivalled experience database.

Through our classification services, support and consultancy activities, we gain unique insights and hands-on experience related to technical, operational and regulatory challenges. We continuously process this information in order to provide the best possible advice and support to our customers.

An important part of this support is to ensure that our rules reflect real operational experience and address critical areas accordingly. It also provides DNV GL with the best basis to develop additional class notations and advisory services, addressing specific needs in the industry.

Access - One rule set


We offer our customers direct access to technical experts (DATE). More than 400 experts covering all technical disciplines in centres around the world are ready to answer your questions - regardless of time zone - within one working day. Customers receive technical support set-up from a pool of experts located in Hamburg, Oslo, Singapore, Piraeus and Houston. All offices work together as a single point of contact to give customers the experience of seamless cooperation between our experts.


The My DNV GL customer portal gives you easy access to our digital services as well as exclusive information. From your own customized account, you can use the intuitive interface to order surveys and audits, have an overview of certificates and reports, download survey preparation notes, manage your ISM audits and receive automatic alerts and class status reports, all while having full control of users and vessel access.

With our electronic approval service (eApproval), you can also upload documentation for approval, view the status of your submitted documents and download approved documents – anytime, anywhere in the world. Upload your technical documentation for type approval or for product certification of components for new ships and vessels in service.

As the world’s leading classification society, the depth of technical expertise that we are able to offer to our customers is unmatched, and we want to make sure that they can tap into this resource more easily than ever before.

DNV GL rules and tools:

DNV GL Rules for ships

View the new DNV GL rules for classification for ships

DNV GL Rules brochure

Download the brochure (PDF, 6MB)


Gain access to personalised services and exclusive information from My DNV GL


Read more about gaining direct access to our technical experts


Read more about our computer based structural design and analysis tool

Nauticus Hull

Read more about our software package for strength assessment of hull structures

DNV GL customer tools

Access all our applications and software services