Class Requirements and Practical Solutions to Winterisation

Winterisation rules are currently used as a means to incorporate historic specification best practice for cold environment shipping into formal notation requirements to be specified for new designs. The background to the development and context of the winterisation rules is given and the transition between such owner led practices and class rule requirements is explored. Cases studies of real applications of the winterisation rules are used to identify practical solutions and key learning points. A review of the structure of winterisation rules in the context of the developing IMO Polar Code requirements is provided. A new approach to structuring and using winterisation rules based on functional requirements is outlined.