Quote Originally Posted by rnvinc View Post
Explain "depression angle"...I haven't heard this term before...

Rickie
The angle produced by the surface of the water and the edge of the side scan beam from the side scan ducer.
(I tried to add a PNG drawing but the site hangs up and I've had to start over several times. It freezes when I try to change the size of the thumbnail)
It is usually done to avoid the surface clutter.