The Submarine Sequence

"I love submarines for that very reason. They speak a foreign language even when they're speaking English." "There's a lot of cool tech jargon in the movie, and I know they know what it means even if I don't," says director Tom Hiddleston. The submarine sequence was extremely contentious because people couldn't see its real-world purpose. It had to stay in existence over such a long period of time as part of two movies.