HMS Emerald (1795) dispatched a squadron of five ships, including "Emerald" and commanded by Nelson in the 74-gun , to locate a large invasion fleet that had left Toulon. After receiving intelligence on 22 May, Nelson correctly predicted the French fleet's destination and set course for Alexandria where the British captured or destroyed all but two of the French ships at the Battle of the Nile, which occurred between 1–3 August 1798. "Emerald" missed the battle; having previously become separated from the rest of the squadron in a storm on 21 May, she arrived at Aboukir Bay on 12 August. When Nelson left
Mediterranean campaign of 1798 main body of the French fleet, Bonaparte ordered Brueys to sail his squadron to the wider Aboukir Bay, northeast of Alexandria. Brueys was instructed that if he considered the anchorage to be unsafe then he was to sail for Corfu, leaving only a small light force that could anchor comfortably in Alexandria. There Brueys held a conference with his officers to decide on their response should Nelson discover them in the bay. Although Rear-Admiral Armand Blanquet of "Franklin" argued that the fleet was safest sailing out to meet the British, he was outvoted and overruled, Brueys ordering that the ships