Clearing into the USVI from the BVI comes up occasionally. Here's some helpful hints and links to make the process go more smoothly.
The forms required for reentry into the USVI are available on-line. You can save a lot of time and aggravation at the C&I office if you fill them out in advance - particularly if you have a large party.
You may be able to get the vessel info from your charter company in advance to fill out this form. If not, add it after you clamber aboard.
Typically if you are leaving the BVI and entering the USVI the first and easiest place to clear-in is Cruz Bay, St. John.
Generally we pick up a ball just east of Lind Point ( Google Map - Lind Point ) and dingy south around Lind Point into Cruz Bay. We lock our dingy at Dingy Dock at the ferry boat terminal dock and then walk directly to C&I. The dingy ride can be a bit "splashy".