The ambient noise may be split up as follows:
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Sea noise: Air bubbles, seismic disturbances, waves, boundary turbulence, etc. |
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Biological noise: Fish, mammals |
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Man made noise: Other vessels, interference |
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Precipitation noise: Heavy rain or hail |
In some areas, where many vessels operate together, the engine and propeller noise from other vessels may be disturbing. Interference from hydroacoustic instruments located in other vessels may also be a limiting factor. The sea noise depends on the weather conditions. In bad weather the sea noise can be quite high due to the waves.