Side Scanning Sonor/Fish Finder

[wiperhunter2]

The side scan on fish finders that have that option are able to look out up to 150 ft straight off to either side of the boat but are able to go all the way to the bottom because there is something to bounce off, before the signal returns to the finder. Since there is nothing for the side imagining to bounce off of, except fish, the max range on a finder is 150 ft.
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