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
Horatio Nelson, 1st Viscount Nelson absent, Napoleon's fleet arrived on 1 July and landed their forces unopposed. Brueys then anchored his fleet in Aboukir Bay, ready to support Napoleon if required. Nelson meanwhile had crossed the Mediterranean again in a fruitless attempt to locate the French and had returned to Naples to re-provision. He sailed again, intending to search the seas off Cyprus, but decided to pass Alexandria again for a final check. In doing so his force captured a French merchant ship, which provided the first news of the French fleet: they had passed south-east of Crete a month before, heading to Alexandria. Nelson