- [first lines]
- Kapitän Jonas Herdt: [narrating] At the outbreak of World War II, Germany increased its U-boat production by 1,000%, mass-producing 17 new U-boats a month. Hitler knew the key to winning the war in Europe was to control the Atlantic. And control it he would. By 1942, German U-boats, working in groups called wolf packs, sunk over 1,000 Allied ships. Their success gave Germany a decisive advantage. They were winning the war. And if this trend continued, all of Europe would fall.
- Chief of Boat Nathan Travers: In the grand scheme of things, what's one boat? This war's gonna end. It doesn't mean we have to end with it.
- Chief of Boat Nathan Travers: I was dead - several times. I gave up all hope of ever coming home.
- Mrs. Rachel Travers: I wish I could have been there for you.
- Chief of Boat Nathan Travers: You were. You're always the one.
- [last lines]
- 1st Watch Officer Ludwig Cremer: If that torpedo had detonated... I, I don't know.
- Chief of Boat Nathan Travers: I know. Good to see you, my friend...