User blog comment:WolfgangBSC/Wolfgang's Random Chat Room/@comment-24787182-20150325145918/@comment-12161342-20150325170202

Also, because ships that are big can't turn on any axis:

-Ships that DON't have any land to run into gradually tilt towards the bow or stern as they keep moving forward until they fill up with water and sink(Earth is curved, and the ships can't rotate to follow the curvature!)