When you’re stuck underwater in a submarine, the number of ways you can die is long and varied—crushing, burning, asphyxiation, exploding, the list goes on and on. Escaping alive requires maintaining calm and making all the right choices. Which makes it all the more surprising that one of the first known submarine survival stories—which includes a 19th century Prussian carpenter and a military crew—involves the first-known undersea fistfight.