A friend asked me to see if i could get an answer to this...
Example: Say the SI screen is 10" wide (just SI, not including the reading displays)(5" left - 5" right).
With contour mode ON (no water column) set at a width of 100' (each side) and in a depth of 25 feet.
How much of the bottom width is being shown on the screen per side?
...
and with contour mode OFF? (water column being shown)

Thanks for the help
NP