Section 2 Direct calculations
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Naval Ships, January 2023 - Volume 1 Ship Structures - Part 5 Environmental Loads - Chapter 1 General - Section 2 Direct calculations

Section 2 Direct calculations

Parent topic: Chapter 1 General

2.1 General

2.1.1 Direct calculations using hydrodynamic computer programs may be specifically required by the Rules. Also, they may be required for craft having novel design features, or may be submitted in support of alternative load and design criteria. LR may, when requested, undertake calculations on behalf of designers and make recommendations in regard to suitability of any required model tests.

2.2 Submission of direct calculations

2.2.1 In cases where direct calculations have been carried out the following supporting information is to be submitted as applicable:

  1. Reference to the direct calculation procedure and technical program used.

  2. Input data.

  3. A description of the direct calculation model.

  4. A summary of analysis parameters including environmental conditions, speeds and headings.

  5. Details of the weight distributions.

  6. A comprehensive summary of calculation results. Sample calculations are to be submitted where appropriate.

2.2.2 In general, all input data and output results are required to be submitted. In such cases, electronic transferral of data with agreed format may be used for submission.

2.2.3 The responsibility for error free specification and input of program data and the subsequent correct interpretation of output rests with the designer/Builder.

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