6.1 In case the standard trials are conducted
at a condition different from those specified in paragraph 5.2.3,
necessary corrections should be made in accordance with the guidelines
contained in the Explanatory notes to the Standards for ship manoeuvrability,
developed by the Organization.
6.2 Where standard manoeuvres indicate dynamic
instability, alternative tests may be conducted to define the degree
of instability. Guidelines for alternative tests such as a spiral
test or pull-out manoeuvre are included in the Explanatory notes to
the Standards for ship manoeuvrability, referred to in paragraph 6.1
abovefootnote .