DNV GL rules

Shaping the future of classification

When will the new DNV GL Rules be published, and when will they enter into force?

Publication timeline for the DNV GL rules is as follows:

DNV GL rules publish and entry into force dates

When the new DNV GL Rules for Ships enter into force, will the DNV rules and GL rules be obsolete? Will there be a transition period?

There will be a transition period in which the DNV and GL rules for ships can still be used. This is especially important for sister ship designs and subsequent orders. The DNV rules and GL rules will then be maintained only to include requirements from the regulators and from IACS resolutions.

Will there be a transition period for the other rules books, such as the rules for inland navigation vessels, yachts, high speed and light craft, etc?

No. When the other rule books enter into force, they will be used as basis for classification services for contracts signed after the entry into force date.

When will the new DNV GL Rules be available in the calculation tools (Nauticus Hull, Poseidon)?

Current versions of Nauticus Hull and Poseidon include support for the new DNV GL rules. Significant improvements have been made to the software to ensure efficiency in the design and approval process.

What will be the DNV GL pricing and packaging policy for supporting calculation tools for hull structures?

In connection with launching of the new DNV GL rules, the supporting calculation tools will be offered free of charge in 2016.

From January 2016, the licensing of both Nauticus Hull and Poseidon will be bundled into one license fee. The pricing of this package has been set to around 1200 Euro per user per year with a quantity discount. The package includes:

  • POSEIDON including prescriptive and FEA
  • Nauticus Hull including Rule Check (with 3D Beam) and FEA (with GeniE - excluding modelling)

This new pricing model is valid from contract renewal period after 01.01.2016. Trial licences/additional licences will be given to customers upon request until new price model is in place January 2016.

Do the new DNV GL rules for hull structure have similarities to the IACS harmonized CSR for bulk carriers and tankers?

The new DNV GL rules for ship hull structures builds on the existing DNV and GL rules, and incorporates elements from the harmonized Common Structural Rules (CSR). CSR is applies only to bulk carriers and oil tankers, while the DNV GL rules applies to all other ship types. A significant development has been done to tailor the CSR elements to the other ship types. However, we saw clear advantages building on the achievement made in the preparation of harmonized CSR. By applying similar rule structure, definitions and methods for all ship types, we will be in a good position to support all our customers with transparent rules, strong competence and an efficient rule software.

The EDW(equivalent design wave concept) is one of the concepts brought forward from CSR. This provides a clear link between rule loads and direct analysis, and enables us to better support development of innovative or novel designs. While the loads in harmonized CSR are applicable for Tankers and Bulkers only (which have similar characteristics), DNV GL has through numerous direct wave load and regression analyses made new load formulations applicable for all ship types and sizes.

To which rule set do conversions of 1A1 (DNV rules), 100A5 (GL rules) and the future 1A vessel (DNV GL rules) have to comply with? (For a definition of Conversion; see Part 1 of the rules)

In general, the main character (1A1, 100A5, or 1A) determines which rules apply to a vessel, and this includes conversions. This is applicable for as long as the legacy rules are in force. For example, if a 100A5 vessel in operation needs to undergo a conversion, the GL rules in force at the time of conversion will be applied. When the legacy rules are no longer in force, all vessels, irrespective of main character, shall apply the DNV GL rules in general.

To which rule set do alterations of 1A1 (DNV rules), 100A5 (GL rules) and the future 1A vessel (DNV GL rules) have to comply with? (For a definition of Alterations; see Part 1 of the rules)

Approval of alterations is in general done towards the rules that were applied at the newbuilding stage.

When will the DNV GL Type Approval Programs be published?

The DNV GL Type Approval Programs will be published in batches during November and December 2015.

Can we apply the new DNV GL rules for ships as a basis for new Type Approvals and the renewal of existing Type Approvals, even though the relevant Type Approval Program has not been published?

Yes. Test requirements will be agreed with DNV GL during the Type Approval Process. Please also be informed that the general DNV GL Type Approval scheme is published as class program DNVGL-CP-0338.

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)


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