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 drowned. Marching along the coast, the French army stormed Alexandria and captured the city, after which Bonaparte led the main force of his army inland. He instructed his naval commander, Vice-Admiral François-Paul Brueys D'Aigalliers, to anchor in Alexandria harbour, but naval surveyors reported that the channel into the harbour was too shallow and narrow for the larger ships of the French fleet. As a result, the French selected an alternative anchorage at Aboukir Bay, northeast of Alexandria. Nelson's fleet reached Syracuse in Sicily on 19 July and took on essential supplies. There the admiral wrote letters describing the events of