Sailors SocietyPort of StocktonPort of South LouisianaTMS Awards 2023TelestackCimbria
  • TMS Awards 2023
  • Geneva Dry
  • Cimbria
  • Port of Stockton
  • Sailors Society
  • Van Aalst

ClassNK amendments to class rules

(Posted on 06/07/20)

Leading Classification Society ClassNK has released amendments to its Rules and Guidance for the Survey and Construction of Steel Ships issued on 30 June 2020.

ClassNK is constantly revising its Rules and Guidance to make them more rational and transparent based on industry requests, R&D outcomes, and feedback from damage investigations as well as changes in line with relevant international conventions, IACS unified requirements (UR), national regulations, etc.

48 amendments issued on 30 June 2020, including the following items, have been released.

Regarding “Oil-lubricated Propeller Shafts Kind 1”, the notation requirements to affix “1C” to the classification characters of the ships fitted with oil-lubricated propeller shafts (Kind 1C), which have a reputation for being highly reliable by various means not only to prevent corrosion damage to stern tube bearings but also to facilitate general maintenance and management more easily, are stipulated. The amendment also includes the treatment of periodic lubricating oil analysis carried out for the postponement of the Ordinary Survey of a propeller shaft, etc.

Regarding “Characteristics of Governors for Prime Movers Driving Generators”, the methods for confirming characteristics of governors of the gas-fuelled engines used as prime movers driving generators are stipulated in response to industry requests for clarification.

Regarding “Watertightness of Cable Penetrations”, the clear and uniform test procedures for confirming and approving the watertightness of the cable penetrations of bulkheads and decks are stipulated.

Regarding “Semiconductor Converters for Power”, the requirements for semiconductor converters for power are amended by compressive review based on the expertise from their application and recent technologies, which includes the addition of type test requirements.

On top of them, the following and more amendments are also made at this time:

“High Voltage Electrical Installations”, “Verification of Accuracy of Flow Meters for Oil Discharge”, “Monitoring and Control Systems”, “Handling of Damage Stability”, “Winches for Free-fall lifeboats”, “Exhaust Gas Recirculation Systems”, “Unified Interpretations for MARPOL ANNEX VI”, “Periodical Surveys of Machinery, Equipment and Fire Safety Systems”, “Welding for Independent Tanks of Ships Carrying Liquefied Gases in Bulk”, “Unified Interpretations for the IGC Code”, and “Heat Treatment for Pipe Weldings”

The amendments are available in “Rule Amendments for Technical Rules” section of “ClassNK My Page”. A registered user of “ClassNK My Page” can also access all ClassNK Rules and Guidance: www.classnk.com

Latest News

Fleet announces strategic leadership transition in its 30th year

(Posted on 22/02/24)

Fleet Management Limited (FLEET), the world’s largest third-party ship management company, has... Read more


OceanScore: Asian shipowners face hefty EU-bound emissions liabilities

(Posted on 22/02/24)

Asian shipowners with vessels sailing to and from Europe are likely to face estimated emissions liabilities... Read more


VIKAND supports V.Ships Greece with mental health training

(Posted on 22/02/24)

VIKAND, the global leader in maritime healthcare, is providing V.Ships Greece with officer training... Read more


RMI Maritime Administrator awards AiP for Anemoi Rotor Sails

(Posted on 14/02/24)

The Republic of the Marshall Islands (RMI) Maritime Administrator has awarded an Approval in Principle... Read more


Ambrey and ISS join to revolutionise maritime safety and security

(Posted on 14/02/24)

Ambrey and Inchcape Shipping Services (ISS) have announce a strategic partnership aimed at transforming... Read more


ShipMoney celebrating 10 years providing digital payment solutions

(Posted on 14/02/24)

Founded in 2013 by Stuart Ostrow, a Florida-based CPA and entrepreneur, ShipMoney set out to challenge... Read more


ClassNK launches shipping and shipbuilding e-learning courses

(Posted on 14/02/24)

ClassNK has introduced E-Learning courses offered through its training and education service, &ldquo... Read more


Top US maritime strategist joins Core Power in Washington

(Posted on 13/02/24)

Robert Bryans, a senior US maritime strategist and systems engineering expert, has joined the growing... Read more


Co-investment for leading dry bulk carrier in Baltic region

(Posted on 11/02/24)

Varma Mutual Pension Insurance Company has agreed to co-invest EUR 15 million alongside OP Finland Infrastructure... Read more


Big hitters endorse InterManager’s new General Principles

(Posted on 11/02/24)

DNV, Lloyd’s Register, and Steamship Mutual have all given their backing to the aims and objectives... Read more


ViganTBA GroupVan AalstGeneva DryBühler GmbH
  • TBA Group
  • Bühler GmbH
  • Telestack
  • Port of South Louisiana

Subscribe to our newsletter

Keep up to date with the latest global news in bulk cargo handling and shipping