- University of Haifa and University of Zagreb study finds small vessels can emit significant underwater noise.
- Researchers created the largest database of its kind, analyzing over 1,200 vessels in the Adriatic Sea.
- Noise pollution affects marine life, particularly species that rely on sound for communication.
- No current regulations exist for small vessel noise emissions, unlike large commercial ships.
Researchers compiled a vast database of small vessels, categorizing them by type, size, and speed using video and acoustic recordings. An optical camera and an acoustic recorder were used to match vessel types with their underwater noise emissions.
Impact on Marine Life
Prof. Roee Diamant of the University of Haifa stated that small vessels, under certain conditions, generate noise pollution that disrupts marine animals, including dolphins, whales, fish, and invertebrates.
Advanced Machine Learning for Identification
A custom machine learning system enabled the identification of vessels and the estimation of their characteristics. The acoustic recorder, placed 30 meters deep in the center of a channel, captured noise data for analysis.
Lack of Regulations for Small Vessels
While the IMO and some nations regulate large ship noise, there are no guidelines for small vessels. Mark Shipton, a doctoral researcher at the University of Haifa, noted that noise from small boats may have an even greater impact, as they operate in coastal areas where marine life is most concentrated.
IMO Guidelines for Large Ships
The IMO’s revised guidelines to reduce underwater noise from shipping took effect on October 1, 2023, targeting ship designers, builders, owners, and other industry stakeholders. However, small vessels remain unregulated.
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Source: Safety4sea
