DNV GL rules for classification: Ships – July 2017
The July 2017 edition of DNV GL rules for classification: Ships is now available.
- General information
New and amended rules were formally approved on 6th June 2017 and are included in the July 2017 edition of the rules. Entry into force date is in general 1st January 2018. However, please note that certain chapters of the hull related ship rules (Pt.3) will enter into force 1st July 2017. The changes to the rules may be divided into three categories:- New class notations
- Implementation of external requirements (IACS unified requirements and relevant IMO codes)
- General updates and corrections
- DNV GL rules for classification: Ships
Below is a general overview of the main changes in the DNV GL ship rules:- New class notations
- Additional class notations:
- CMON - Construction monitoring (Pt.6 Ch.9 Sec.7)
- Revised class notations
- R - Service area notation (Pt.1 Ch.2 Sec.5)
- Ship type notations:
- Escort tug (Pt.5 Ch.10)
- Barge and Pontoon (Pt.5 Ch.11)
- Fishing vessel (Pt.5 Ch.12)
- Additional class notations:
- Hatchcoverless (Pt.6 Ch.5 Sec.2)
- HMON - Hull monitoring systems (Pt.6 Ch.9 Sec.4)
- Changes to material related topics (Pt.2)
Rule reference | Description |
Pt.2 Ch.2 | |
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Pt.2 Ch.4 | |
Alignment with
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Structural steel
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Compartments |
- Changes to hull related topics (Pt.3 and Pt.5)
Following the new technical platform for hull structures introduced with the DNV GL rules in October 2015, further updates have been carried out to streamline the application and refine scantling impact.
Please note that changes marked with * come into force with immediate effect, i.e. from 1st July 2017. .
Rule reference | Description |
Pt.3 Ch.3 Sec.6* | |
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Pt.3 Ch.4 Sec.5* | |
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Pt.3 Ch.4 Sec.6* | |
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Pt.3 Ch.6 Sec.7* | |
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Pt.3 Ch.10 Sec.1 | |
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Pt.3 Ch.10 Sec.2 | |
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Pt.3 Ch.10 Sec.4 | |
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Pt.3 Ch.10 Sec.6 | |
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Pt.3 Ch.12 | |
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Pt.3 Ch.12 Sec.3 | |
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Pt.3 Ch.14 Sec.1 | |
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Pt.5 Ch.1 | |
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Pt.5 Ch.3 Sec.2 | |
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- Changes for system related topics
Rule reference | Description |
Pt.4 Ch.6 | |
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Pt.5 Ch.7 Sec.1 | |
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Pt.5 Ch.7 Sec.13 | |
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- New class notations
- Construction monitoring (Pt.6 Ch.9 Sec.7)
- Modern rules and calculation tools allow an identification of structural elements with high utilization.
- Provides extended documentation and follow up of highly loaded structural elements during construction and operation.
- Construction monitoring (Pt.6 Ch.9 Sec.7)
- Other significant changes
- Service area notation (Pt.1 Ch.2 Sec.5)
- Provides a corresponding maximum sea state to each of the service area notations.
- Further provides correlation between given service area notation, load level applied for hull strength and significant wave height.
- Escort tug (Pt.5 Ch.10).
- Introduced numerical methods as an alternative to full scale test as means to establish the escort rating numbers
- Non-self-propelled units (Pt.5 Ch.11).
- Introduced the significant wave height as alternative dimensioning parameter for hull loads.
- Fishing vessels (Pt.5 Ch.12)
- Made RM notation (Pt.6 Ch.4 Sec.10) mandatory for fishing vessels with refrigerated cargo holds
- Hatchcoverless (Pt.6 Ch.5 Sec.2)
- Established requirements for MPVs and dry cargo ships to operate with open hatch covers.
- Requirements are established based on MSC/Circ. 608/Rev. 1 Interim guidelines for open-top containerships.
- Hull monitoring (Pt.6 Ch.5 Sec.4)
- Extended the application of the notation and by this given the possibility for tailor made solutions by having added new qualifiers for:
- Ice thickness
- Ice response
- Parametric roll
- Vibration dose
- Improved available bridge information
- Extended the application of the notation and by this given the possibility for tailor made solutions by having added new qualifiers for:
- Service area notation (Pt.1 Ch.2 Sec.5)