Added 1976-08-27 01:18:37
App Freshness



Robert Rose
Ocean Navigator
Post Date:
2017-10-18 13:18:37

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Ocean Navigator is an aid to navigation for the modern navigator, it includes a simple sight reduction program for sun sights, plus Great Circle and Rumb Line calculator to find the course to steer and distance by entering a start lat and long and a destination lat and long. See the screen shots below for examples of the running program.

It is composed of seven separate elements.

Sun Sight Reduction
Great Circle calculation
Rumb Line calculation
Average Speed
Course made good
Extreme Range
Distance by Vertical Angle

The Sun Sight Reduction program is designed for navigators who need a backup to their GPS system or for those doing their RYA Ocean Practical to check their workings. No books or tables need be carried.
The program will produce an accurate position line for any date between the years 1900 and 2100.
There is no need with this program to choose a position (CP) so that the DR position can be used, except when using examples from books when the CP must be used.

Version 1.2 – Updates to the user interface, Added Distance by Vertical Angle and Extreme Range.
Version 1.21 – Following comments by CJR04 fixed an issue where the Azimuth would not display correctly for some sights.

Please email [email protected] if you have any questions.


  • Ocean Navigator Screenshot
  • Ocean Navigator Screenshot

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