suirendoujin - What happened to Hiroshi Takeuchi's NASG Airfoil Database
? There were a lot of Gottingen airfoils there, and now the site is gone.
Here is a comparison of the airfoil you posted, the SD7062 Bernd suggested, and a Drela airfoil
designed for hand launch gliders. You might want to try this one. If you find the 580 coordinates or data, I'm sure someone will help you make some airfoil drawings.