For black Friday greatdivers.com had a $1 sale to take their Natural Navigation course, so I did it.
As background I have already taken the PADI Underwater Nav class.
The Natural Navigation course consists of the first 2 lessons of the full 7 lesson Scuba Navigation Mastered Class.
The topics...
I guess these are discontinued?
Anybody want to part with one for a reasonable price?
Anything similar on the market that would work for a scale mapping project?
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