A free program for Android, by Wavve Boating.

Wavve Boating: Easy Marine GPS is a nautical GPS app for your mobile device that gives you access to marine GPS data. The app is designed for boaters who want to know more about the waterways they are navigating. It provides a variety of charts that are customized to your boat’s size and draft. You can add friends to your fleet to create a community of boaters, and it will help you to share your knowledge of the waterways with them.

Wavve Boating is a tool for boaters to help them navigate the waterways they are in. It allows them to view the marine charts and navigate to the locations they want to go.