Information concerning DNV Rules for Classification can be obtained by sending an email to rules@dnv.com
Common rule booklets have been included under the Rules for Classification of Ships.
Part 3 - Structures, Equipment
Pt.3 Ch.7 Accommodation and Escape Measures
Main changes entering into force 1 January 2006:
General
This booklet has been changed to align the rules with existing DNV policy on the inclusion of statutory regulations. In particular, the scope of work for the following cases has been more clearly defined:
DNV being authorized by the flag state
DNV not being authorized by the flag state
Craft being built to national regulations.
The documentation requirements have been changed to tabular form. IMO HSC Code text has been deleted and replaced by a general reference. Appendix A has been reserved for DNV and IACS Interpretations and clarifications.
Pt.3 Ch.8 Life Saving Appliances and Arrangements
Main changes entering into force 1 January 2006
General
This booklet has been changed to align the rules with the HSC 2000 Code and to clarify DNV's involvement and requirements concerning statutory aspects. In particular, the scope of work for the following cases has been more clearly defined:
DNV being authorized by the flag state
DNV not being authorized by the flag state
Craft being built to national regulations.
The documentation requirements have been changed to tabular form. IMO HSC Code text has been deleted and replaced by a general reference. DNV and IACS Interpretations and clarifications have not yet been included, but a void Appendix A has been reserved for this purpose.
Part 4 - Machinery and Systems – Main Class
Pt.4 Ch.3 Rotating Machinery, Drivers
Main changes entered into force 1 July 2005
Sec.3 Item F206 and the related Guidance Note have been replaced to align the requirements with IACS UR M16 Rev.1 Jan 05.
Pt.4 Ch.4 Rotating Machinery, Power Transmission
Main changes entered into force 1 July 2005
Sec.5 Item B205 has been amended providing less strict design requirements for elastic couplings for vessels with ice class notations.
Pt.4 Ch.5 Rotating Machinery, Driven Units
Main changes entering into force 1 January 2006
General
As a consequence of the extended use of podded propulsors, the existing requirements for podded and geared thrusters have been evaluated and updated. The extended use of electro mechanical steering gear both for podded and geared azimuth thrusters has justified an update of the requirements for steering of thrusters generally and for electro mechanical steering especially. The requirements that have been added are based on equivalence to the electro hydraulic steering of conventional rudders.
Sec.3 Podded and Geared Thrusters
A101: Scope of rules has been changed such that requirements for control system and electric system apply also to auxiliary thrusters of less than 300 kW.
A200: More detailed requirements for documentation for steering gear and for documentation of electrical motor control system for thrusters driven by electric motor.
Added requirements for documentation of connection stator-top housing and rotor-to-shaft for podded thrusters and for documentation of capacity of support bearing.
Requirements have been added for:
- B103: shielding of POD internals
- B104: hydraulic components (and for piping arrangement)
- B105: cooling of podded thrusters
- B202: duplication of shaft seals for single unit installations
- B203: rope guard
- B400: azimuth steering based on revised rules for conventional rudders
- B416: control system for electro mechanical steering gear with respect to acceleration and shock load
- B417: rating for electro motor driving the steering gear
- B505: bilge system for podded thrusters
- B802: separate lubrication systems for installations with a limited volume of oil sump
- E105: duplication of sensors not easily replaceable
- F104: boundary to sea
- F203: steering gear emergency power supply
- H103 and H200: survey of assembly and installation of thrusters at yard
Requirements have been updated for:
- Table E1: monitoring of thrusters
- F202: thrusters compartment
- I101 - I110: sea trial testing.
Guidance note has been added covering:
B803: lubrication oil cleanliness.
Part 5 – Special Service and Type - Additional Class
Pt.5 Ch.5 Yachts
Main changes entering into force 1 January 2006
General
Large slow going motor yachts often have displacements exceeding the basic class requirement given in Pt.1 Ch.1 Sec.2 A103, and the previous practice has been to apply the rules for ships. Due to the increasing number of enquiries for classification of large
yachts, this chapter has been changed to cover these types of vessel. Also, in response to yacht owners’ requests for ice class notations (e.g. for exploration type yachts), this chapter has been amended to include ice class rules for yachts.