Echo sounding and sonar for fishing
著者
書誌事項
Echo sounding and sonar for fishing
（FAO fishing manuals / Food and Agriculture Organization）
Fishing News [for] the Food and Agriculture Organization, 1980
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注記
Bibliography : p.103-104
内容説明・目次
内容説明
Acoustic methods of fish detection have proved essential in profitable fisheries. Recent improvements in electronics have led to better performance, reliability, and reduced equipment costs. The operation and interpretation of the information provided by modern acoustic equipment requires skill and practice. This manual contributes, in a practical way, to the speedy acquisition of these essential abilities. Although compiled primarily for fishermen, instructors, extension workers and trainees, it will also be found useful for boat owners, fishery managers, and administrators in helping to select and install the best acoustic equipment for a particular fishing purpose.
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