The core activity of Silent Line is offering Innovative Tailor-Made Solutions related to noise and vibration control. This starts in an early Design Stage looking into reducing noise at the main and secondary sound sources (active noise and vibration control), optimizing the ship structure (Structural Optimization) and last but not least use the latest technologies on insulation materials and systems.

Achieving low noise and vibration levels (in accordance with or even lower than comfort class 1) requires team work between Silent Line, the Designers and the Shipyard.


Design Stage:

Silent Line offers the following services in the Design Stage:

  • Study the propulsion train
  • Prepare a preliminary insulation plan (space requirements and weight distribution)
  • Which noise and vibration levels can be achieved at transit and anchor condition
  • Acoustic privacy (cabin-to-cabin noise)
  • Study HVAC system
  • Prepare the section of noise and vibration control for the builder’s specification

Building Stage:

Prior to the building stage it is important to carry out Finite Element Analysis (F.E.A) in order to avoid and ensure low vibration levels.

In case problems are foreseen (resonance | annoying vibrations) we will update the structure.

For this reason, it is recommended to perform these studies prior to the building stage.
Based on the above-mentioned studies (Design Stage) most important noise and vibration parameters are studied and known already.
During the early building stage more and additional detailed noise and vibration related studies are carried out, detailed insulation | installation plans are designed and presented to the Yard and Designers.
All our proposals and solutions are engineering based meaning everything is carried out using the latest technologies and calculations (computer simulation models).
Silent Line is well-known for achieving extremely low noise and vibration levels for both Transit and Anchor condition. In most cases even lower than Comfort Class 1 which means noise levels below 45 dB(A) at transit and noise levels below 35 dB(A) at anchor condition. This means, especially at anchor condition, that cabin-to-cabin noise (acoustic privacy) becomes extremely important.
Working closely together with the Yard and Interior Designer is essential as it comes to space requirements. HVAC systems do require detailed studies meaning where to install to units, location of in and outlet openings and air speed at the grills. Silent Line is looking into each and every detail and that is one of the reasons that we achieved and well-known for