In late November 1790 the ship narrowly avoided destruction when lightning struck her whilst she was in Portsmouth harbour. The main topmast exploded but did not plunge through the quarterdeck as it was still held by the toprope. In 1801 Vice Admiral Horatio Nelson chose Elephant as his flagship during the Battle of Copenhagen due to its suitability for the shallow waters there. It was on this ship that he is said to have put his telescope to his blind eye and claimed not to be able to see a signal ordering him to withdraw.