Measurements surveys &
performs noise and vibration measurements during sea trials, and for
vessels in service with known problems or other need for investigation.
trials, the purpose always includes the documentation of noise and
vibration levels, comparison with requirements, and the identification
of problem areas. Consideration is given to comfort for crew and
passengers, as well as to reliability and risk of damage to machinery,
equipment and structure.
or vibration problems are found, the job is to find solutions, applying
the best possible tools:
Advanced measurement equipment and signal analysis tools
Onboard analysis/calculation tools
Skills, in-depth understanding and experience
and vibration problems are very different in terms of technical
difficulty. In some cases, experienced specialists can advise simple
'fixes' on the spot. In other cases, extensive studies are required in
co-operation between owner, yard, propeller/engine manufacturer and the
noise and vibration specialists.
note on 'old' ships with problems: New developments, 'add-on' solutions
and similar, mean that it might be possible to find solutions, even
though past efforts did not succeed.