2.2.1 The modes of operation for each unit are
to be investigated using realistic loading conditions including gravity
loading with relevant environmental loading. The following environmental
considerations should be included where applicable: wind, wave, current,
ice, sea-bed conditions, temperature, fouling, and earthquake.
2.2.2 Where possible, the above design environmental
conditions should be based upon significant data with a period of
recurrence of at least 50 years for the most severe anticipated environment.
2.2.3 Results from relevant model tests may be
used to substantiate or amplify calculations.
2.2.4 Limiting design data for each mode of operation
should be stated in the operating manual.