Full Great Circle

How to calculate a great circle?
For expeditious results, simply indicate your departure and arrival coordinates by selecting them on the map. Subsequently, I shall employ an equatorial distance of 360 nautical miles and a meridian intersection of 10 degrees. Upon marking your arrival position on the map, I will proceed to compute your Great Circle metrics and exhibit the corresponding Great Circle Points. If, however, you choose to input your departure and arrival locations through the textboxes, a submission click is requisite.

For a more personalized experience, kindly input your specific Meridional Interval (MI) and Equatorial Distance (etmal). The default procedure entails the initial computation of the Great Circle position. Should you wish to include meridian intersection details, select the option to "Calculate Meridian Intersection and Show meridian intersection in the map." Your created routes will not be saved in the browser. If you want to keep that route, create a xml file and upload this xml to the server. If you load a route from the server to the map, it will be saved in the browser as long as you don't delete the browser cache.

Feel free to manipulate your departure and arrival waypoints on the map, provided they were originally entered via map clicks. Note, however, that multiple Great Circles may be visually presented on the map, yet the tabulated values strictly pertain to the last one. To clear all data on the map, utilize the "Clear All" function.

My mapping operations rely on Bing maps and Layer data from OpenSeaMap, offering insight into the locations of the waypoints you have computed.

To embark on composite sailing,

Follow this steps:

  1. Compute your full Great Circle to identify the latitude of the vertex and assess the feasibility of composite sailing.
  2. Input departure and arrival positions.
  3. Verify your full Great Circle.
  4. Enter etmal for "Etmal Departure to Vertex 1" (default: 360 nm).
  5. Input etmal for "Etmal Vertex 2 to Arrival" (default: 360 nm).
  6. Set the MI for "MIntersection Departure to Vertex 1" (default: 10°).
  7. Specify the MI for "MIntersection Vertex 2 to Arrival" (default: 10°).
  8. Activate "Composite Sailing."
  9. Submit

If you want it more personal enter your own meridian intersection or etmal.

Route Planning

Efficient route planning involves the following steps:
Click your waypoints on the map, allowing for waypoint and course adjustments with real-time updates.

Use the 'Delete' button in the table to remove waypoints. Note that waypoint insertion is currently unavailable.

Your route is temporarily stored in your browser. Clearing the browser cache or using 'Clear All' will erase the entire route. XML files of your route can be created, downloaded, and uploaded to the server for sharing or future use.

When editing a route, changes are stored in the browser and not in the original file. To save the edited route, generate a new XML file.

Direct uploading of XML files from your machine to the chart is not supported. Instead, upload the file, and it will appear in a list under the WayPoint list. From there, load your route into the chart.

For uploading routes, navigate to 'Tools,' then 'Upload your Route XML.' Enter your route names without a suffix (.xml), as it will be added automatically.

My website contains interactive charts and maps that are designed for optimal viewing on larger screens, such as desktop computers or laptops. To fully appreciate the details and features of these visual elements, I recommend accessing our site from a desktop environment.

Some Instruction Videos

Enjoy your navigation!