DNV GL Rules for Ships - October 2020 edition

The 2020 October edition of DNV GL rules for Ships is now available.

1. General information

New and amended rules were formally approved on October 15th 2020 by Group CEO Remi Eriksen and are included in the October 2020 publication of the rules. 

The main changes to the rules cover:

  1. Rules for Ships:
    a. New and revised class notations
    b. General updates and corrections
  2. Naval vessels - New rule regime

The entry into force date for these rules is 1st of January 2021.   The rules may, however, be applied to projects contracted before this date upon agreement between parties.

For more information on the changes, please contact your local DNV GL office. 

Below is given a general overview of the changes in the rules for classification of ships and the rules for classification of naval vessels.

2. Rules for Ships

Main class

TopicRule reference
Type of change
  • Podded and geared thrusters
Pt.4 Ch.5 Sec.3Fully revised

Class notations

TopicRule reference
Type of change
  • Smart
    Vessels with features enhancing efficient and green operations
Pt. 6 Ch. 5 Sec. 24New notation
  • D-INF
    Data collection infrastructure
Pt. 6 Ch. 11 Sec. 1New notation
  • DDV
    Data driven verification
Pt. 6 Ch. 11 Sec. 2New notation
  • REW
    Remote witnessing
Pt. 6 Ch. 11 Sec. 3New notation
  • Structural strength and integrity
    Bulk and ore carriers
Pt. 6 Ch. 1 Sec. 4/5Revised notation

Updates commented

a) Podded and geared thrusters

  • The rules section is fully revised to cover the challenges of thrusters with capability to serve both  propulsion and steering.
  • A subsection giving high level requirements related to arrangement, operation and capability is included. 
  • Requirements for electric steering gears are added.
  • Requirements from IACS UI SC242 is implemented. (Covering SOLAS Regulation II-1/relevant parts of 28/29/30)  

b) Smart

  • Introducing a new class notation giving opportunities to promote and visualise a shift towards more efficient and green operations being based on digital technology and/or environmental friendly solutions, enhancing the performance and operation of a vessel.
c) D-INF
  • New class notation providing requirements for a data collection infrastructure to facilitate a safe and reliable vessel-to-shore data exchange.
d) DDV
  • New class notation providing requirements to systems onboard, and to verification methods to be used, for data-driven verification processes.
e) REW
  • New class notation providing requirements to vessel to shore live streaming of audio, video and operational system HMI, enabling interaction between the vessel and shore personnel.
f) Structural strength and integrity – bulk and ore carriers
  • Revised the class notation to cater for innovative/unconventional designs where the effect of double bottom stresses may be less than what is observed for standard design vessels currently in service.
  • This amendment opens for the use of results from cargo hold finite element analysis to determine permissible double bottom stresses more accurately.
  • Procedures will be further detailed in the next revision of DNVGL-CG-0127

3. Rules for Naval vessels

  • DNV GL has the previous years offered classification of naval vessels through 3 different rule regimes.  We are now introducing the first part of a new and coordinated regime adapted to the needs of the navies.  
  • This rule publication presents the overall framework of the regime and gives the new entry portal for classification of naval vessels.
TopicRule reference
Type of change
  • New rule regime

Pt.1 Ch.1 

Pt.1 Ch.2


4. Information on coming rule editions

DNV GL publishes main rule editions annually. The next main rule edition will be published in July 2021.

There is however already planned an amendment to the rules in January 2021. 

Additional amendments may be carried out, and all amendments will be specifically marked in the rules table of contents found here.

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