Wandering trader ships / floating boats

The wandering trader ships would be ships that have a chance of spawning with villages, but only if they have a dock leading to an ocean. The design would be almost the same as the sunken ship, but it has red and blue banners. Of course there would be the wandering trader. It would have slightly better trades than the normal ones because resources are more accessible with a boat. The boat wouldn't leave the dock. It could also have lamas connected by lead to a fence on the boat. This would be really cool. :)