Leading classification society ClassNK has announced that it released amendments to its Rules and Guidance for the Survey and Construction of Steel Ships on 27 December 2019.

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 the industry as well as changes made to relevant international conventions, IACS unified requirements (UR), national regulations, etc.

More specifically, some of the requirements amended this time are as follows:

In response to feedback from damage investigations;
– Amendment related to the Welding for Cross-joints subject to High Stress, Towing Winch Emergency Release Systems, and Arrangement, Connection and Protection, etc. of Piping Systems
In response to industry requests;
– Amendment related to the Steels Subject to Special Requirements for Ammonia Carriers, Clarification of the Application of the Requirements for Fire Protection and Extinction, and the Guidance related to Alarms, etc. of Drip Trays Provided for Exhaust Gas Cleaning Systems
In response to changes in international conventions;
– Amendment related to the Rules and Guidance related to Damage Stability, the Guidance related to Winches for Lifeboats Other Than Free-fall lifeboats, and the Rules and Guidance related to Modernization of the GMDSS
In response to changes in IACS Unified Requirements;
– Amendment related to the Rules and Guidance related to Condition Based Maintenance Scheme for Machinery, the Rules and Guidance related to the Materials used for the Principal Components of Diesel Engines, etc., and the Guidance related to Environmental Tests for Automatic Equipment