This app helps to live share your actual position of boat to others, who you need to be informed.
It is intended primarily as a position reporting tool running in background during the trip (not as a navigational tool).
It periodically sends actual position to server. The server offers position-sharing webpage viewable by people who were given special sharing link by you - app shows the link and by using share-button the address can be easily shared to others by mail, sms etc.
The page shows your position along with whole route drawn so others can see where you actually are.
Server also stores all the trackpoints, so your movement could be viewed afterwards or even be downloaded as GPX file.
When there is temporarily no internet connection positions are cached locally on the device and sent to the server once after the connection is up.
Webpage is located at http://sailtrack.eu
Disclaimer: App is using GPS even in background (when enabled inside the app).
Continued use of GPS running in the background can dramatically decrease battery life.