Thanks, LocalSailor, I saw that too, and got confused by the part that said "soundings in feet on inset!" Not sure where the inset is (I guess pg. 12), but fathoms makes sense.

I asked the question because my father-in-law told me, with the great authority of an 87-year-old person who has never sailed, that the depth of ALL the waters in the Virgin Islands is only 6-10'. I knew he was dead wrong, but it did get me curious what those actual depths really are.