I'm surprised the boat didn't catch fire since it would effectively become the return path for current if I'm not mistaken. I'm assuming this is a case where the safety features (relays designed to prevent too much current) triggered.
UPDATE: Here's a look at the transmission circuit that's been affected. We know this has made today exceptionally difficult for many of you, and we appreciate your patience. We will continue to share more information as it becomes available. #DarkTO
