The qtVlm Navigation and Routing app is an open-source marine navigation and route planning application developed by the company qtVlm. This is a free version of the app that can be downloaded to your smartphone, tablet, or other mobile devices and used to plan your boat route. The application has an easy-to-use interface that is designed to be used by both experienced and novice boaters. It will help you find the best routes and plan your boat trips in advance.

You can set the start and end points of your route and select the type of boat you are sailing.