Based on the preliminary results, two major observations have been made:
- The depressurisation of the testing facility results in a change in gas-to-liquid density ratio and due to this, in a change in air flow between the incoming wave and the deck box. This causes a change of wave shape. For the wave cases tested at scale 25, this resulted in an increase of measured horizontal global impact loads in depressurised conditions compared to atmospheric conditions.
- The unscaled surface tension results in changes of the free surface instabilities between the tests carried out at scale 25 vs scale 50. As a result, higher global horizontal deck loads are measured at scale 50.