The TopTier JIP
took the initiative to develop a Notice to Mariners to inform seafarers about this hazard. The document describes how a container vessel’s crew and operational staff can plan, recognise and act to prevent parametric rolling in following seas. The description is accompanied with a flow chart to support the identification of an
unfavourable combination of conditions at an early stage to allow them to take action before parametric rolling builds up. In addition to the Notice to Mariners, an instruction video has been made, as well
as a ‘roll risk estimator’ in an Excel format.