This appeared this spring in Herring Bay (north side--the Deale breakwater is just visible behind the boat's bow). I guess this guy was salvaging a few parts.
It isn't in a channel and is in a portion of the bay that few sail, so I imagine it will be there forever. Probably uninsured and certainly without a responsible owner (or rather, with an irresponsible owner). At least for now we can see it, but someday the mast will fall off or someone will salvage it, making it a hazard to navigation.