21 October

On 21 October 1805, the Battle of Trafalgar was fought. At least two incarnations of the Doctor were present at the event. (PROSE: H.M.S. TARDIS, COMIC: Rough Waters)

In 1829, the Mermaid hit a coral reef in a storm. The ship was wrecked but none of the crew perished. (PROSE: Of the Mermaid and Jupiter)