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Old 12-29-2019, 06:05 PM   #4
City: Solomons, MD
Vessel Name: Branwen
Vessel Model: Hatteras 48 LRC
Join Date: Feb 2015
Posts: 645
You can take classes, and I recommend taking them in person with someone recommended as an instructor in the topic. Using the results to approximate one's position requires digging numbers out of references and then some math. It's not complex math, but it's easy to make mistakes and end up with poor answers. I successfully completed the course many years ago and never thought about doing it again or using what I'd learned - ever, so I can't recommend a source of instruction, but someone else here probably can.

GregBrannon is offline   Reply With Quote