Section 3 Model experiments

3.1.1 LR may require model experiments and theoretical calculations to be carried out for novel or complex design concepts. It is advisable that details of all proposed model experiments and theoretical calculations are submitted to LR prior to commencement of the testing and analysis phases. The results of all such investigations are to be provided no later than when plans are submitted for approval, but preferably as early as possible.

3.1.2 Where model testing is undertaken, the following details are to be submitted:

1. a summary of the model construction and its instrumentation, including calibration of instruments;

2. a summary of the testing arrangements and procedures;

3. a summary of the tank facilities and test equipment;

4. details of the wave generation, response measurements, definitions and notations;

5. details of data recording, data reduction and data analysis procedures;

6. details of calibration procedures with theoretical computations; and

7. tabulated and plotted output.

3.2.1 Where model testing is undertaken, the minimum test matrix shown in Table 1.3.1 Minimum test matrix is required to be carried out.

3.2.2 In addition to those quantities which are normally measured in a model experiment, the following data is to be obtained where appropriate:

1. vertical accelerations at the LCG, bow and stern;

2. acceleration loads due to heave, pitch and roll;

3. vertical bending moment;

4. bow impact pressures at representative operational forward speeds;

5. oblique sea loads inducing horizontal bending moments and torsional moments.

3.2.3 The basis on which the parameters are chosen for investigation is to be submitted for approval at the earliest opportunity.

3.2.4 Results from open water model experiments and full scale measurements may be accepted, full details are to be submitted for appraisal.