Welcome to the SBF Inner Teacher, Your exam trainer for the SBF inland. With this app you have full control over your exams. Not just for that Sport boat license (SBF) inland, motor or sailing, but also for the combined examination with both certificates. The most important functions at a glance: • no advertising, can be used offline • Test extensively and then activate all questions via in-app purchase • all 300 official questions & answers (ELWIS, cutting edge) • Exclusive one-time explanati