New Research Confirms: Bubble Curtains Dramatically Reduce Underwater Blast Noise

A groundbreaking new study has just validated what many in the marine industry have long suspected, bubble curtains are one of the most effective tools available for reducing underwater explosive noise.

Conducted at Limehillock Quarry in the Uk and funded by the Department for Energy Security & Net Zero (DESNZ), the project included 23 controlled underwater explosive tests to evaluate how different bubble curtain configurations affect acoustic attenuation.

What the study revealed:

• Right-sized systems deliver better results
  Larger charges demand larger, properly scaled bubble curtain systems to maintain performance.



• Placement is critical
  The study identified optimal distances between the blast source and the bubble curtain, distances that vary by charge size and can be calculated precisely.
• Airflow boosts effectiveness
  Higher airflow rates improve attenuation, while correct system sizing prevents wasted energy.

These findings reinforce the importance of proper airflow design, positioning, and system sizing in underwater noise mitigation projects.

For offshore construction, port expansion, dredging, or subsea infrastructure projects, these findings provide valuable, real-world data to guide engineering and compliance planning. Read the full technical report here.

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