Garmin chart plotter series - OpenSeaMap now running on all garmin nautical chart plotters
Tracking of ships - course, speed and further data of AIS-capable ships is shown on layer "Marine Traffic".
Water depth - worldwide depth profile, using bathymetric data, with depth lines, seashade and colours.
Weather Chart - 3 day prediction for wind direction and wind speed, air pressure, temperature, precipitation, wave height.
Visiting Google - harbour "Warnemünde" as 3D-panorama at the Google-headquarters in Zürich
aerial images - can be set as background image for the map. Those high-resolution images are provided by Bing.
Wikipedia - 1.7 Mio geo-referenced Wikipedia articles are integrated into the chart and directly linked to Wikipedia.
Trip planning - the tool calculates course and distance, as well as exports a route with a waypoint list.
integrated JOSM - You now can edit the chart directly out of the chart itself with the powerful editor "JOSM".
4000 Harbours - waiting for their description. All harbours can be described in detail and with photos in our Port Pilot Book.