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
Greek owners to play key role in nuclear development for maritime sector
(Posted on 29/09/25)“Nuclear energy is stepping forward as a credible long-term solution” stated Christopher... Read more
Columbia leader calls on the maritime industry for alternative fuels reality check
(Posted on 29/09/25)The CEO of leading integrated maritime, logistics, energy, leisure and offshore services platform Columbia... Read more
Record numbers from Indian subcontinent for Sailors’ Society conference
(Posted on 22/09/25)More than 4000 cadets, trainees and ratings from the Indian subcontinent took part in the first of Sailors... Read more
The Swedish Club expands management team
(Posted on 22/09/25)The Swedish Club have announced that it is strengthening its management team to match the pace of its... Read more
Shipowners face Port State Control crackdown on BWTS compliance
(Posted on 22/09/25)BIO-UV Group is advising shipowners to ready themselves for extensive Port State Control inspections... Read more
CORE POWER welcomes agreement to accelerate investment in maritime decarbonisation
(Posted on 16/09/25)The U.S. and the UK have announced a bilateral collaboration to accelerate reactor licensing from three... Read more
Cobelfret accelerates digital transformation with integrated maritime platform
(Posted on 14/09/25)Cobelfret, a leading global dry bulk shipowner and operator based in Singapore, has partnered with Smart... Read more
Support grows for India’s new maritime CCTV rules
(Posted on 14/09/25)Zelim is calling on international regulators and flag states to follow India’s lead on enhancing... Read more
Ionic extends Orca AI to bulker fleet to boost safety
(Posted on 09/09/25)Athens-based Ionic controls a fleet of eight crude tankers and 11 bulkers under its respective wet and... Read more
Columbia and Pan Marine launch Egyptian JV
(Posted on 09/09/25)Columbia Group, a global leader in integrated maritime services, has announced the establishment of... Read more
