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» Online Classroom   » Inland and Coastal Navigation   » Public Discussion of Inland and Coastal Navigation   » 6-17

   
Author Topic: 6-17
Jonathan


 - posted December 01, 2021 10:40 PM      Profile for Jonathan           Edit/Delete Post 
Hi there-I'm getting some different numbers for 6-16 (slightly off)) and 6-17 (more significantly off). I can't figure out why. For 6-18, I adjusting the course direction to 092T to account for leeway. Using OpenCPN, I get 1.67mi for (A), .99mi for (B) and 1.87mi for (C). My numbers for A and B are 7% and 4% off, respectively, compared with your answers. I have tried to piece together the problem from various posts about this one and 5-15 but haven't found an answer with a diagram and numbers.


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