 Then at 14: 30 on 3 August, three of Warren's patrolling frigates, Phoenix under Captain Lawrence Halsted, HMS Pomone under Captain Edward Leveson-Gower and HMS Pearl under Captain Samuel James Ballard, discovered a sail off the western shore of Elba and gave chase. The ship was the 38-gun Carrère under Captain Claude-Pascal Morel-Beaulieu, carrying 300 barrels of powder and escorting a convoy of small coastal vessels carrying military supplies from Porto Ercole to Porto Longone. Although Carrère turned away from the British pursuit and actively engaged the lead ship Pomone with her stern-chasers (cannon mounted in the rear of the frigate), Carrère was too laden to escape her opponents. After a ten-minute chase as Pearl cut off the route to Porto Longone and Pomone manoeuvered into a firing position, Captain Morel-Beaulieu surrendered. Losses on Pomone were limited to two killed and four wounded, two of whom subsequently died; Carrère had suffered "tolerably severe" casualties in the engagement from a complement of 352. The delay caused by the brief chase however had allowed the coastal ships to disperse and flee so that all of them avoided capture and some even reached Porto Longone.
