Harwood receives continuous updates on Graf Spee from an American radio contact. Merchant ships in the harbor offer another way to report her movements: the fine for transmitting there is only £5, which Britain would likely repay and might supplement with a reward. Ambassador Millington-Drake, MI6 officers, and the naval attache add observers ashore. Langsdorff realizes that Harwood will learn of any move. Harwood might also have an aircraft airborne, making even a night departure difficult to hide.
Chapter · 1:00-2:05
British surveillance tracks any move by Graf Spee
Radio reports, merchant ships, and observers ashore make even a night departure by Admiral Graf Spee difficult to conceal from Harwood.