Nautical Calculator Pro

Nautical Calculator Pro is the most complete application that solves the navigation calculations

The main features are :

 - Calculate Route (solves 2nd navigation problem)
 - Calculate point on Rhumb Line (solves 1st navigation problem)
 - Calculate point on Great Circle (solves 1st navigation problem)
 - Calculate point on WGS84 (solves 1st navigation problem)
 - Calculate Average speed
 - E.T.A. calculation
 - Route plan, for manual waypoints planning 
 - Waypoint route
 - Compisite sailing with parallel limit
 - Rhumb Line Parallel/Meridian intersection
 - Follow on same Rhumb Line route
 - Opposite course rendez vous
 - Route correction
 - Calculate Amplitude at sunset and sunrise and magnetic compass deviation
 - Compass detections
 - Solves Drift problem
 - Solves Tides problem
 - Solves Tidal current problem
 - Wind calculation with Beaufort classification
 - ABC Tables (azimuth, initial course, right ascension with unknow star)
 - Nautical almanac
 - Celestial Navigation with position line 
 - Meridian transit
 - Celestial observation
 - Coastal navigation
 - Wheel Over
 - Draft survey
 - Converter
 - Anchorage
 - Interpolation

In routes feature there is a world map: it isn't a nautical chart and is not for use as a saling chart, but as a simple general means of showing the courses through the water on earth, this map isn't for navigational purposes. 
No need connection for show the map; the map will be downloaded only one time.
The map, for size limit, will be show for scale over 60-70 Nm.

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