This is two u-boats, not American subs, and they are transferring torpedoes from one boat to the other, not fore to aft.
Still, show him these, tell him that a torpedo weighs more than a ton, and he should get the idea.
Also, since American subs didn't carry external reloads, it's a pretty safe bet that they also didn't have any gear onboard for winching the torpedo out of the torpedo room and up to the deck.