Dmap Regatta Tracker: https://play.google.com/store/apps/details?id=com.digimap.japukarace.app&hl=en
Dmap Regatta is a smartphone based tracking system for sailing and other sports. Dmap Regatta is the right solution for everyone, from individual competitors and coaches to clubs, associations or event organizers. Dmap Regatta tracking system lets you to share your position online, so your coach, competitor or family can watch and locate your track anytime. Either way, you can share your tracks with your competitors or publish your racing to your own home page. It's fun to play your track around the course, and there are plenty of things to learn. The real value is attained when a number of sailors get together and share their tracks with each other.