Noise Reduction

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):

  • Passenger areas in the aft of a cruise ship with substantial noise from the propellers
  • Impact noise excitation to passenger cabins located just below open deck areas, galleys or discos
  • Airborne noise from machinery rooms, disco music or theatres

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.

Insulating Ship Floors

Insulating floor coverings, non-combustible material that provides optimum sound insulation:
  • A-60 approved floating floors, excellent noise reduction properties of airborne, impact and structureborne sound
  • A-60 approved steel floating floors, excellent noise reduction properties of airborne, impact and structureborne sound
  • Fire protection Systems, suitable for wet areas
  • Sound insulation constructions for low-frequency ranges
  • Insulating Systems, e.g. for tanks

Our range of products

If you have any questions about our product range, feel free to contact us: contact@gtf-freese.com

 

TEFROTEX® VISCOELASTIC

Sound-damping viscoelastic deck covering for inside and outside decks on board ships, density (+20°C): approx. 1,4 kg/m²/mm

TEFROLITH® M

Insulating Ship-Floor for A-class 60 divisions, underlay for floor coverings in accommodation, not for wet areas

TEFROLITH® FF-STEEL

Insulating Ship-Floor for accommodation for A-class 60 divisions, construction on mineral wool slabs SeaRox 436

TEFROMENT® S

Insulating Ship-Floor for A-class 60 divisions, underlay for carpet and elastic coverings in accommodation, usage in wet areas upon request

TEFROLITH® FTG-35

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

TEFROLITH® FTG-20

Insulating Ship-Floor for A-class 30 divisions, insulating mortar-system also for wet areas, requires a weight distribution layer as final layer which is approved as not readily ignitable

TEFROTEX® 500-P

Insulating ship-floor for accomodation, usage in wet areas upon request

How to reach us

G. Theodor Freese GmbH
Carl-Benz-Straße 29 
28237 Bremen 

Phone: +49 (0)421 / 396 08-0 
Fax: +49 (0)421 / 396 08-550
E-mail:  kontakt@gtf-freese.de

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