Humminbird SI questions
What is the biggest chip you can put in for recording?
How many hours will it record?
Now for the biggie. You are out tolling around recording everything and later when reviewing you see a great crappie condo about 230 ft out. I'm assuming you can put your cursor on it and get the coordinates. Do you put it on the top of it or the bottom? How accurate is it? Does the system do some oblique rectification computations so you can determine the size?
This stuff reminds me of SLAR. Side Looking Airborne Radar developed during the Nam era.
Fair Winds and Following Seas
Bill H. PTC USN Ret
Chesapeake, Va