Sailing Marks for Training

To go along with the nifty little boats I made (http://www.thingiverse.com/make:128233), I made up these marks. Glue a small magnet to the bottom and they will stick to most whiteboards, allowing for course layouts, and rules and tactics training.

I only have a single extrusion printer, so I had to color the numbers with a marker. Not sure what is required for dual extrusion, but it's be cool to see a dual print of these.