Section 3 Scenario document for non standard load scenarios

3.1.1 The scenario document, which is design specific, is required for applications where operational scenarios do not match the standard load scenarios in Ch 2, 1 Standard load scenarios and is to include details of the scenarios selected for deriving and applying ice loads.

3.1.2 The scenario document is to address the philosophies in the Rules and provide justification for deviation from the requirements in Ch 2 Operational and Load Scenarios.

3.2.1 This Section is applicable to the consideration of non-standard scenarios and for validation of the propulsion unit loading for the assignment of SFIC to ships with the ice class notations PC1, PC2 or PC3.

3.2.2 The following should be contained within the submitted document:

1. Details of ice conditions assumed;

2. Operational scenarios for hull and propulsion unit;

3. Criticality matrix for hull and propulsion unit scenarios;

4. Supporting load and operational data for the criticality matrix;

5. Description of propulsion unit and/or hull loading areas with reasons for selection;

6. Proposed strengthening standards for each load area;

7. Arrangement of propulsion devices;

8. Derived load data based full scale measurement or other predictive means;

9. Details and justification from the Rule philosophy.

3.2.3 The above document is intended to enable LR to assess the suitability of the proposed hull and propulsion unit strengthening for the assumed operational profile of a Stern First Ice Class Ship.