NavShip Free is a free navigation software for nautic usage. It uses an special overlay for google maps to show shipping signs. Currently in development until 08/16/2016. New: Select start of route manually. Available Routes in Germany, France, Belgium, Netherlands, Poland, Denmark, Czechia, England, Luxemburg, Austria, Switzerland, Slovakia, Hungary, Italy, Monaco and SpainIncluded card material: Rhein, Main, Mosel, Donau, Ems, Mittellandkanal, Nord-Ostsee-Kanal, Elbe, Hunte, Weser, Werra, Fulda, Lahn, Havel, Trave, Spree, Oder, Berliner- und Brandenburger Gewasser, Saar, Bodensee, Rhone, Saone, Limmat, Aare, Zurichsee, Maas, Ijsselmeer, connected Channels and German Coast, Coast of Belgium, Denmark and the Netherlands, Helgoland, Mediterranean Sea Coast of Spain, France, Italy, Croatia and lots more. More card material is delivered by the next days. Disclaimer: This app should only be used as an assistant. Please use it carefully and supportive. I am not responsible for accidents, etc. Note: This app is tested on Nexus 5 and might not work on all devices. I am currently working on this issue to get it runable on more devices.