On the sea and on inland waterways, we can hear a multitude of sound signals. Important information for our navigation is always conveyed in this way. Whether it’s about overtaking, avoiding, or anchoring – we can only navigate safely if we can quickly and clearly identify the sound signals. With the signal finder, all sound signals (inland and sea) can be instantly and even directly identified while listening! This one-sided, waterproof laminated information board withstands the harsh conditions of onboard life and should not be missing from any helm station! It is also ideal for preparing for one of the official boating licenses (SBF Inland or SBF Sea). Take advantage of the opportunity for lightning-fast identification of sound signals and thus increase safety on board!.