Oddly enough, there are several more beaches on Tortola than most people are aware. Some do not have suitable anchorages, but are accessible from shore, others are only accessible by boat ... or you may have to walk in a distance from the road to get there.
While I was searching my memory of all the beaches I have been to over the years, I came up with no fewer than 15 on Tortola that deserve an honourable mention, at the very least. There are still others, but they are quite small or very difficult to access and don't really have a lot to offer even the most curious visitor.
I have numbered them, beginning in the West End, on the north side of Tortola, working clockwise around the island.