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Article: The bottom line: your chart display and echo sounder can work together to give you access to sea bottom characteristics.
- Article from:
- National Fisherman
- Article date:
- December 1, 2006
- Author:
CopyrightCOPYRIGHT 2006 Diversified Publications. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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While fishermen spend their time on the ocean's surface, they make their money beneath the surface, and for that, they need to know all they can about the ocean floor. Any number of excellent navigation charting software programs can help you get from point A to point B, but they are of little help in telling you where to run your gear. Fishermen need depth and topographical characteristics as well as the sea bottom's composition. Is it mud, sand, silt, gravel or something else?
Other helpful information includes temperature, dissolved oxygen content, salinity, and proximity to food and predators. Though you can't have everything, three factors--depth, bottom ...