The German Maritime Communication Service (GMDSS) is a communication system used by ships, submarines, and port personnel in maritime traffic. The service uses the VHF band for transmission, which is much used by maritime traffic. The service is a mandatory requirement for all ships and port personnel.

This app provides a quick and easy way to prepare for the test. You will get all the questions in the form of a list. You just have to click on the "Take Test" button. The app will then ask you all the questions in the test. If you get all the questions correct, you pass the test.