ClassNK releases amendments to class rules

(Posted on 03/07/23)

ClassNK has released amendments to its Rules and Guidance for the Survey and Construction of Steel Ships dated 30 June 2023.

ClassNK is constantly revising its Rules and Guidance in order to reflect the latest results from relevant research and development projects, feedback from damage investigations, requests from industry as well as changes made to relevant international conventions, IACS unified requirements (UR), etc.

More specifically, some of the amendments made this time are as follows:

• Specify new formulae for sloshing loads as well as corresponding new scantling formulae. This amendment is being made to incorporate the latest sloshing knowledge obtained from the society's independently conducted research and development.
• Establish new requirements for work ships and support ships intended for the maintenance and management of offshore wind turbine installations as well as corresponding ship classification notation. This amendment is being made in response to requests from relevant industry members because the demand for such ships is expected to increase as more offshore wind turbine installations enter into service.
• Amend requirements for seawater-lubricated propeller shafts subject to drawing-out inspection every five years to allow the interval to be changed to every 15 years through the adoption of a preventive maintenance system. This amendment is being made in response to requests received from relevant industry members related to recent developments in seawater lubrication system technology.
• Clarify the scope of protection against fire for additional equipment used for transferring cargo to other vessels on liquefied gas carriers and clarify the NOx emission standards for biofuels. These amendments are being made in response to changes in relevant international conventions and to incorporate newly established IACS Unified Interpretations (UI).
• Amend requirements for test procedures of cast and forged steel products, and safety measures for reciprocating internal combustion engines. These amendments are being made to incorporate the latest revisions of relevant IACS Unified Requirements (UR).

Latest News

Shipping takes major sustainable plastic step with toolkit from MACS

The Maritime Association for Clean Seas (MACS) has published a series of practical guides to enable... Read more

Shanghai climbs to second as Singapore retains top spot

Shanghai has officially become the world’s second-most prominent shipping hub, according to the... Read more

OceanScore sees growing port adoption of PortView

OceanScore, the maritime data and sustainability company helping shipping and ports turn regulatory... Read more

INTERCARGO highlights progress and priorities in bulk carrier safety

Bulk carrier safety continues to show steady long-term improvement, but the nature of risk facing seafarers... Read more

Norden raises full-year guidance following strong performance in dry cargo

Following stronger than expected operational performance in dry cargo, reduced costs associated with... Read more

Algoma announces refinancing of long-term debt

Algoma Central Corporation, a leading provider of marine transportation services, has announced that... Read more

Global maritime under threat from Fortibleed incident, warns Cydome

Major maritime, ports and energy companies have been identified by Cydome’s threat-intelligence... Read more

Crewing specialist expands global recruitment network with Indonesian seafarers

As the global shipping industry faces mounting concerns over future crew availability, Danica Crewing... Read more

IMO pauses evacuation in Strait of Hormuz following attack

Following an attack on a vessel in the Gulf of Oman, IMO has decided to temporarily pause its evacuation... Read more

Human cost of keeping world trade moving highlighted on Day of the Seafarer

Leading health and wellness platform OneCare Group is calling on shipping leaders to recognise the immense... Read more