The folding chart in the VI cruising guide shows (in red) areas "typically" off limits to charter boats, Eustatia sound included. The charts provided by sunsail and moorings haven't been marked up for some years, it seems.

If you waive the chart briefing (as we do), you're probably on the hook for knowing where you're allowed to go even if you didn't receive any info.

Having an incident in an area considered "off limits" can affect the insurance situation.

I've seen a whole fleet of moorings/sunsail cats anchored behind Eustatia island during that kiteboarding event.