Sailing Navigation Data is an Android app that provides crucial navigational information for nautical enthusiasts. Developed by Jakub Olejnik, this app falls under the Travel & Navigation category and the Maps & GPS subcategory. It is available for free and provides a wealth of information for filling in yacht logbooks, saving and playing cruises on maps, and keeping a diary of marinas.

The app is designed to be user-friendly and accessible for all levels of nautical experience. It includes essential data such as tidal information, weather forecasts, and wind speeds. The app also allows the user to save their cruise routes on the map and keep track of their progress. With the diary feature, users can easily keep track of the marinas they've visited and the experiences they've had on their journey. Overall, Sailing Navigation Data is a useful tool for any nautical enthusiast looking to enhance their sailing experience.