4.2 Model set-up
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1227 – Explanatory Notes to the Interim Guidelines for Alternative Assessment of the Weather Criterion – (11 January 2007) - Annex - Explanatory Notes to the Interim Guidelines for Alternative Assessment of the Weather Criterion - 4The determination of the roll angle Φ1 - 4.2Model set-up

4.2 Model set-up

  4.2.1 The model was the same used for the drifting tests (Lpp = 2 m, scale: 1/85). It was built up to the upper vehicle deck, till which buoyancy is included in the stability calculation. The top was built open, but water did not enter into the model in waves with the largest steepness.

  4.2.2 The model was ballasted to the loading condition for the ship, as shown in table 2.1. To ensure correct displacement and attitude, the colour of the model was changed between above and below the load line. The GM as measured by an inclining test was 1.67 cm, corresponding to an 0.7% error to the scaled value of the ship. The natural roll period was also measured to be 1.92 s, corresponding to an 1.2% error.

Parent topic: 4 The determination of the roll angle Φ 1
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