Boat manufacturers and VTT are working to develop quieter boats
Noisy cockpits and cabins have long been a challenge facing domestic
manufacturers of motor boats. The noise level of motor boat interiors can be
reduced; one of the most efficient ways of achieving this is the insulation of
the engine by means of an acoustic enclosure.
Boaters increasingly require convenience and quieter boats. Boating is
unpleasant for the skipper and passengers if it is difficult to hear normal
conversation in the cockpit. VTT’s Quiet boats project examined both
short-term solutions applicable to existing boats and factors affecting noise
level that can be taken into account in the design of new boats.
noise level of motor boat interiors can be affected – and reduced. Placing an
acoustic enclosure around the engine and sealing any openings between the
engine bay and the cockpit proved to be the most efficient ‘quick fixes’.
project has given boat makers access to practical research data on the origin
of noise and ways of reducing it that can be directly applied to product
development. Some of the companies involved in the project have already
applied the results in their production. “Thanks to the results of the Quiet
boats project these businesses now have a foundation on which to base their
own further investigations and the product development of even quieter boats”,
says Senior Research Scientist Hannu Nykänen of VTT.
study focused on cabin cruisers between 6 and 14 metres in length fitted with
one or two sterndrive engines. The project began with the analysis of the
noise levels, sound quality and intelligibility of speech in the cockpit and
passenger cabin of the boat types selected as reference boats by the boatyards
The project was carried out in cooperation with
four Finnish boat sector companies: Bella Boats, Oy Botnia Marin Ab, Tristan
Boats Ltd and Volvo Finland Ab. The University of Kuopio joined VTT in the
research cooperation. The Quiet boats project is part of the Tekes Boat