ELI5: Explain Like I'm 5

Safehull

Safehull is when a big boat or ship is made really strong and tough so that it doesn't break or get damaged easily when it goes through rough waters or crashes into things like rocks or other boats. Think of it like wearing a really strong helmet when you ride your bike, so that if you fall off you won't get hurt as badly. Safehull is like a helmet for boats, to keep everyone on board safe and make sure the boat doesn't get hurt too much.