Except it’s not a boat transporting one heating element, but thousands upon thousands of other things. To accurately quantify emissions you’ll need to divide the ship’s total emissions by the # of products on board, likely making transport emissions from a single heating element negligible and easily surpassed by burning methane in your house constantly every day forever
It has never worked, but there are people online pretending it has, which makes some people who aren’t very smart think maybe it’ll work for them, too.