Research Document 1998/96

Hydroacoustic calibration techniques used for southern Gulf of St. Lawrence herring fishering vessels - 1997

By A. Clay and R. Claytor

Abstract

The calibration procedure and results used on small herring inshore (<45') boats to collect acoustic data during surveys and regular herring fishing activity in the southern Gulf of St. Lawrence are compared to calibrations on DFO research vessels used to conduct acoustic research surveys in Atlantic Canada. Calibrations of acoustic equipment on inshore boats provide comparable results to those of research vessels. The ability to collect high quality acoustic data from small inshore vessels is a valuable new tool for stock assessments of inshore coastal water pelagic species such as herring.

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