I have delivered several boats (usually sail) to Florida, Bahamas, and elsewhere up and down the coast, and have used different types of software.
It is all pretty good, but, I find that alot of people depend to much on them. I always bring (2) GPS's and use paper charts that are logged every hour. remember, fuses burn, batteries die, water sometimes comes in everywhere!! At least with the paper charts, I know where I was an hour ago. Always double check yourself.
I think the best advantage was the ability to get realtime weather maps.
Pete
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