Battle of the Atlantic

The Battle of the Atlantic took place during World War II. During this battle, the Tenth Doctor and Heather McCrimmon landed in a sinking IXD2 U-Boat on 14 September 1944, during the Battle of the Atlantic. Krigge suspected them of being British spies, but the Doctor was able to gain the trust of Captain Otto Lehman. The Doctor wanted to save the crew of the U-Boat, but Heather was reluctant because they were Nazis. The Doctor was able to convince her otherwise by arguing that the crew had just as much a right to live as any other humans and that even after repairing the U-Boat's damage it was highly unlikely that the U-Boat would be able to rejoin with German forces. Heather and the Doctor left the U-Boat after the leak was fixed, leaving it to be captured by the HMS Worthy. (COMIC: The Submariners)