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
Battle of the Nile the ninth ship in the French line, sighted the British fleet approximately nine nautical miles off the mouth of Aboukir Bay. The French initially reported just 11 British ships – "Swiftsure" and "Alexander" were still returning from their scouting operations at Alexandria, and so were to the west of the main fleet, out of sight. Troubridge's ship, HMS "Culloden""," was also some distance from the main body, towing a captured merchant ship. At the sight of the French, Troubridge abandoned the vessel and made strenuous efforts to rejoin Nelson. Due to the need for so many sailors to work onshore,