Abstract
Ambient sea noise and the noise generated by a small wooden trawler were recorded in Passamaquoddy Bay in summer and in winter. The recordings were analysed in “real‐time” in third‐octave bands. The measurements were combined with published data on masking effects on hearing of cod to calculate a minimum range at which cod can first detect trawling noise. The range is 10,500 ft (3.2 km) in summer, and 8,200 ft (2.5 km) in winter.
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