A free app for Android, by NautoShark.

This is an important application for sailors, especially for those who use the Navtex system. It will help you to know the most recent warnings and alerts issued by the authorities of the country in which you are sailing. It is very important to know what the warnings and alerts are, and what they mean. If you are sailing in a foreign country, it is even more important to know the warnings and alerts in that country.

The most important thing is that the application is easy to use and very intuitive. There are different sections that you can access. You will be able to know the warnings and alerts of your country, and you will be able to access them from anywhere. It is very easy to use, and you don't need to register to use it.