Some of the best cruising grounds in the U.S., if not the world, are found off the south shore of Cape Cod and the nearby islands – the Elizabeth Islands stretching southwest between Buzzards Bay and Vineyard Sound, and then Martha’s Vineyard and Nantucket offshore. Here’s a look at 16 great cruising destinations there from New England Boating. You can easily cruise to two or three of them (or more) in the same day, but each one is worth a long visit in its own right. First on their list is Cuttyhunk, as it would be for mine too, not…