Sailing straight from Jost to Culebra is pretty straight forward. We sail from Culebra to St. John in the other direction in about six hours and pass Jost on the way.
The information I rely on specifies Dewey Dock at Ensenada Honda and that is where we report. Its worth giving them a call and asking.
https://www.cbp.gov/travel/pleasure-boats-private-flyers/pleasure-boat-locations/pr-us-viCheers, RickG
