Section 1 General

1.1.1 These Rules are applicable to ships that are intended to operate in ice going stern first using directional thrust from podded propulsion units or mechanical azimuthing thrusters.

1.1.2 The Rules cross-reference the Ice Class Rules in Pt 8 Rules for Ice and Cold Operations of the Rules and Regulations for the Classification of Ships, July 2022 (hereinafter referred to as the Rules for Ships).

1.1.3 Propulsion is to be provided by podded propulsion units or azimuthing thrusters in accordance with Pt 5 Main and Auxiliary Machinery of the Rules for Ships. Other propulsion arrangements will be specially considered.

1.1.4 Consideration of the requirements for low temperature operation (winterisation) is not included in these Rules. See the Rules for the Winterisation of Ships, July 2022.

1.1.5 The Rules provide a scenario-based framework for consideration of ships operating stern first in ice. Other scenarios for operating in ice, e.g. sideways or oblique angles envisaged for station-keeping and wide channel breaking, will be considered, based on the requirements of Ch 6 Direct Calculations and Non-Standard Load Scenarios.

1.1.6 Additional requirements to these Rules may be imposed by the National Authority with which the ship is registered and/or by the Administration within whose territorial jurisdiction it is intended to operate. See Ch 1, 3.2 National Authority requirements 3.2.1.

1.2.1 Where the requirements given in these Rules are complied with, an appropriate notation may be assigned. See Ch 1, 3.1 Assignment of ice class.

1.2.2 Where a notation is desired, the ship is to comply with the requirements of the applicable sections of these Rules, Pt 8 Rules for Ice and Cold Operations of the Rules for Ships in addition to the application of the Rules for Ships for open water service.