00000nam 2200000zi 4500 9.950142 CaOODSP 20250422143927 m o d f cr mn||||||||| 250415t20002000bccab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc pn----- x9x9 Fs97-6/2324E-PDF Fs97-6/2324E Wyeth, M. R., author. Use and calibration of a quantitative acoustic system on a commercial fishing vessel / by M.R. Wyeth, R.D. Stanley, R. Kieser, and K. Cooke. Nanaimo, British Columbia : Fisheries and Oceans Canada, Science Branch, Pacific Region, Pacific Biological Station, 2000. ©2000 1 online resource (vii, 46 pages) : illustrations, map. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian technical report of fisheries and aquatic sciences, 0706-6457 ; 2324 Digitized edition from print [produced by Department of Fisheries and Oceans]. Includes bibliographical references (pages 14-15). "Work by Wilkins (1986) and Stanley et al. (2000) has shown that scientific echosounders aboard large research vessels can be used to estimate the biomass of off-bottom shoals of widow rockfish (Sebastes entomelas, Jordan and Gilbert 1880). However, the operating cost of these vessels limits the extent of acoustic work and the difficulty of scheduling makes it impossible to respond rapidly to unexpected appearances of large shoals. Most commercial fishing vessels now use echosounders, sonar, and precise navigation equipment (GPS) in their daily fishing activities to locate fish, project catch rates, and set their gear (Misund 1997). Thus, relatively little additional equipment is required for these vessels to collect geo-referenced digital acoustic data that can provide a permanent record of fish abundance. The practicality of adapting commercial fishing vessels to supplement and possibly replace research platforms for acoustic surveys has already been successfully demonstrated in Canadian herring assessments (Melvin et al. 1998). They showed that such vessels can serve as viable alternatives to government research vessels. In addition to scheduled use of these platforms, commercial vessels can provide "opportunistic" sampling when significant acoustic signs of fish are encountered during routine fishing. We explored the potential of involving Pacific coast fishers and the acoustic systems on their vessels in groundfish stock assessment research by conducting a joint commercial and research vessel-based acoustic survey of widow rockfish from January 15 to February 8, 1999. … This report summarizes the deployment, operation and intercalibration of the acoustic data logging and analysis system aboard a commercial fishing vessel. It is not to be construed as a review of acoustic hardware or software"--Introduction, page [1]. Includes abstracts in English and French. Underwater acoustics British Columbia Pacific Coast Equipment and supplies. Fishing boats Electronic equipment British Columbia Pacific Coast. Underwater acoustics British Columbia Pacific Coast Equipment and supplies Calibration. Fishing boats Electronic equipment British Columbia Pacific Coast Calibration. Widow rockfish Detection British Columbia Pacific Coast. Acoustique sous-marine Colombie-Britannique Pacifique, Côte du Appareils et matériel. Bateaux de pêche Équipement électronique Colombie-Britannique Pacifique, Côte du. Acoustique sous-marine Colombie-Britannique Pacifique, Côte du Appareils et matériel Étalonnage. Bateaux de pêche Équipement électronique Colombie-Britannique Pacifique, Côte du Étalonnage. Veuve (Poisson) Détection Colombie-Britannique Pacifique, Côte du. Canada. Department of Fisheries and Oceans, issuing body. Pacific Biological Station (1972- ), issuing body. Canadian technical report of fisheries and aquatic sciences ; 2324. (CaOODSP)9.504449 PDF 5.85 MB https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs97-6/Fs97-6-2324-eng.pdf