Spotlight

Hydro Sound Damper (HSD)

  • resonator system
  • near-to-pile Noise Abatement System
  • applications until 40 m and pile diameters of ≤ 8,0 m
  • several hundred offshore

The noise reduction is independent of:

  • current (until 0.75 m/s)
  • direction
  • water depth / bathymetry

Advantages:

  • low mass
  • application possible at very different water depths

Disadvantages:

  • soil couplings
  • lifting- and lowering device are currently project-specific unique pieces
  • limited life-time of the HSD-elements according to the manufacturer
  • noise reduction mainly in the low-frequency range

Offshore-suitable Noise Abatement System.

Achieved noise reduction for the Sound Exposure Level (SEL resp. LE):

Broadband insertion loss ΔSEL [dB]
MinimalMedianMaximal
101112