I don't know of any source for Bahamas
that will run on OpenCPN
. Assume you have researched and heard that by far the best charts for the Bahamas
are the Explorer chart series. Unfortunately the only electronic format they are currently released on are Jeppeson format on chips or cards.
I have OpenCPN running but my upcoming trip to the Bahamas will be using the Explorer chart books
and a Garmin
Don't forget that in the Bahamas even with the best charts your best tool is a sharp eye and good light, especially when you are in shallows or close to shore.