Today, noise and vibration are vital factors for comfort at sea. Whilst there is plenty of noise in fitness areas, restaurants, bars, cinemas and discos, passengers also want to be able to relax in their cabins. Further problems of propeller- and machinery noise mean sound protection and effective vibration control. Analysis and prediction of noise sources are key areas addressed while designing and construction all kinds of vessels. To achieve an economical but most effective reduction of noise and vibration, each source needs to be identified and addressed.
The choice of low noise resilient mounted engines and low noise propellers are methods to reduce the structure-born noise and vibration in cruise-ships. However, experience has shown, that in many areas of a ship sufficient improvements cannot be obtained only by reducing the noise generation at its source.
Such areas can be (amongst others):
One of the most important elements for noise in cabins is noise radiation from floors. In order to meet the requirements of the market GTF Freese has carried out several research and development programs. The results of these programs provide the solutions for noise reduction required from cruise vessels through platforms to tugs.
Sound-damping viscoelastic deck covering for inside and outside decks on board ships.
Insulating Ship-Floor for A-class 60 divisions, underlay for floor coverings in accommodation, not for wet areas
Insulating Ship-Floor for accommodation for A-class 60 divisions, construction on mineral wool slabs SeaRox 436
Insulating Ship-Floor for A-class 60 divisions, underlay for carpet and elastic coverings in accommodation, usage in wet areas upon request
Insulating Ship-Floor for A-class 60 divisions, insulating mortar-system also for wet areas, requires a weight distribution layer as final layer which is approved as not readily ignitable
Insulating ship-floor for accomodation, usage in wet areas upon request