3 Other Behaviour Which May Occur
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1329 – Guidelines for Uniform Operating Limitations of High-Speed Craft – (11 June 2009) - Annex – Guidelines for Uniform Operating Limitations of High-Speed Craft - Appendix 2 – Guidance for Operation of High-Speed Craft in Following and Stern-Quartering Seas - 3 Other Behaviour Which May Occur

3 Other Behaviour Which May Occur

 Masters should also be aware of the other types of behaviour that may occur, viz:

  • .1 loss of transverse stability due to loss of waterplane area when poised on a wave;

  • .2 slamming, which can occur with high-speed craft in following seas if their speed is at least twice the speed of the waves;

  • .3 synchronous rolling, which occurs in stern-quartering seas when the period of the transverse components of the waves coincides with the natural roll period of the craft;

  • .4 parametric rolling, which can occur in following seas if the length of time each wave takes to pass the craft is approximately equal to half the natural roll period;

  • .5 combinations of behaviour, such as surfing which can lead to a broach or a bow-dive; both of which can lead to further severe events such as fore-deck immersion or capsize.

Parent topic: Appendix 2 – Guidance for Operation of High-Speed Craft in Following and Stern-Quartering Seas
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