What would be the point? Ships are complex machines and the ocean is an incredibly harsh and unforgiving environment. You would need crew to simply maintain the

What would be the point? Ships are complex machines and the ocean is an incredibly harsh and unforgiving environment. You would need crew to simply maintain the ship while underway and fix things that break (which pretty much always happens). Next, these ships can be downright dangerous for other, smaller ships. It has happened before that large cargo ships have killed people on sailboats when they didn't keep an adequate lookout. I wouldn't trust an autonomous system to have enough accuracy to avoid running over other boats.