That's the problem we have with cruise missiles. I think what you're describing is more likely a cruise missile than a UAV. Off of a ship, it's hard to get some of those back on board. You might be able to launch them, but if they're reusable, they're likely to have to be rotary-wing helicopter sort of surrogates, and that is a very difficult problem. I think it's a NORAD problem.
Those bombers that do the runs along our coasts could very well be armed with air-launched cruise missiles—that was exactly the problem we worried about in the 1990s—that are very small and very difficult to detect and that fly at low altitudes.
We have very limited radar coverage around our northern warning system, so in order for us to have any confidence that we could pick them up, we had airborne radars, AWACs, airborne warning and control systems, with the down look of the radar those give, which has coverage out to larger distances. All of that applies to UAVs as well. I think that while you could launch one from a ship, if you're calling it a UAV, it's because you think you're going to get it back, and getting it back on a ship is not going to be an easy problem.