Save coordinates, artwork options, live tuning, and geography corrections in this browser. Water depths always reopen at the feet/automatic defaults.
Saved locally in this browser. Export a backup before clearing browser data or changing computers.
Pick exact area on a map
With ratio lock on, the blue rectangle is the exact output frame. Unlock it to draw an arbitrary must-include area; the dashed green frame shows the additional coverage needed without stretching.
The current selection size will be preserved.
Requested areaFinal output coverage
Running in Browser Mode (no server exec). Data is fetched via a built-in proxy and processed client-side.