Vessel noise reductions

Structural or operational changes to fishing vessels that would decrease the intensity or signature of their sound output, potentially decreasing the degree to which they attract animals that presumably associate these vessels with a feeding opportunity (Nowacek et al. 2003). At least one study in the Pacific indicated that the noise from longline haulers attracted false killer whales from long distances (J. Watson, pers. comm.).

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Study Type: 

Field study in the wild


Bay of Fundy

Target catch: 


Effect on bycatch species: 

Whales showed a mild response to social sounds of conspecifics and no response to sound of approaching vessel.

Effect on target catch: