1.1 The scope of this
section is the evaluation of hull and superstructure vibration with
regard to crew habitability in all normally occupied spaces. The vibration
levels given in this section do not apply to passenger cabins or other
passenger spaces except in so far as they are working areas.
1.2 The evaluation
applies to normal service operating conditions with the main propulsion
machinery developing at least 85% of the maximum continuous rated
power. The evaluation is not intended to apply to manoeuvring conditions
or operation in heavy weather.