Some of us like planning our attacks and navigation on a maneuvering
board. The free to download 3D design program Sketchup has a
protractor, a measuring tool, a line tool and a circle tool. Now it has
a maneuvering board and a metric nomograph as well.
1. Download Sketchup from it's home page
2. Download template
3. Put template in Sketchup's folder Resources/en-US/Templates
4. Install Sketchup and set "Maneuvering board metric" as the default
If you want to learn maneuvering board techniques google "maneuvering
Unfortunately Alt+Tab is needed to switch between SH3 and Sketchup.
Alternatively you can run Sketchup on an old computer side by side with
your new computer.