Guidelines on Preventive Measures against Parametric Rolling
Year: 2025 Language: English Author: ClassNK Genre: Guide Publisher: ClassNK Edition: Edition 1.4 (November 2025) Format: PDF Quality: eBook Pages count: 43 Description: In recent years, cargo collapse accidents that are thought to have been caused by parametric rolling have occurred successively in large containerships and car carriers, including an accident in which more than 2,000 containers were lost or damaged. In response to this situation, various organizations, institutions and groups have issued alerts and proposed numerous measures related to parametric rolling. With this background, Nippon Kaiji Kyokai (ClassNK; hereinafter, “the Society”) decided to publish these Guidelines, which summarize the requirements to affix the related notations to classification characters of ships that take effective measures against parametric rolling, together with the related requirements. The Appendices of the Guidelines also provide a fundamental knowledge of the mechanism, features and points to note in connection with parametric rolling, an outline of the parametric roll response calculation, an introduction to devices and techniques for preventive measures against parametric rolling and the method for preparing polar charts. It should be noted that the Guidelines are general guidelines for preventive measures against parametric rolling and are provided as a reference for safe operation. The operation should be determined based upon individual circumstances and the final decision is made by the Master, and thus any responsibility for the operation is attributed to the Master. Furthermore, it is not supposed that the contents of these Guidelines are used as reference materials for any litigation.
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Guidelines on Preventive Measures against Parametric Rolling
Language: English
Author: ClassNK
Genre: Guide
Publisher: ClassNK
Edition: Edition 1.4 (November 2025)
Format: PDF
Quality: eBook
Pages count: 43
Description: In recent years, cargo collapse accidents that are thought to have been caused by parametric rolling have occurred successively in large containerships and car carriers, including an accident in which more than 2,000 containers were lost or damaged. In response to this situation, various organizations, institutions and groups have issued alerts and proposed numerous measures related to parametric rolling.
With this background, Nippon Kaiji Kyokai (ClassNK; hereinafter, “the Society”) decided to publish these Guidelines, which summarize the requirements to affix the related notations to classification characters of ships that take effective measures against parametric rolling, together with the related requirements. The Appendices of the Guidelines also provide a fundamental knowledge of the mechanism, features and points to note in connection with parametric rolling, an outline of the parametric roll response calculation, an introduction to devices and techniques for preventive measures against parametric rolling and the method for preparing polar charts.
It should be noted that the Guidelines are general guidelines for preventive measures against parametric rolling and are provided as a reference for safe operation. The operation should be determined based upon individual circumstances and the final decision is made by the Master, and thus any responsibility for the operation is attributed to the Master. Furthermore, it is not supposed that the contents of these Guidelines are used as reference materials for any litigation.
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