Vixen
Penultimate Amazing
I love how Vixen believes - still - that there's a functional equivalence between a) a ship's hull being built to keep water out, and b) a ship's hull being a hermetically-sealed chamber of air (much like, say, a blown-up and tied-off balloon).
And come to think of it, Vixen really ought to know a little about Viking seafarers. If she does, then perhaps she might mull over the fact that pretty much all Viking longships had open decks. Their hulls were built to keep out the sea, sure - but if there was a storm and waves managed to breach the freeboard of the ship, that water was going to pool and collect down by the keel. And if a sufficient mass of water collected there, the ship would sink.
If you knew about simple physics, you'd know that if a Viking longboat capsized, it would not sink but it would turn belly up. The biggest hazard was probably running into rocks, causing a breach in the hull, then you were done for. All the churches around the coastal towns have votive ships hanging from the ceiling, which probably to back to pagan times to invoke safety for those at sea.
This is a large one at Turku Cathedral.