This large wooden screw frigate, whose name means ‘immortal’ in French, was built in 1859 as the fourth ship in a series with this name. The cruiser used a screw propeller for locomotion and belonged to the British Navy. Its duties included escorting and protecting warships. It was about 84 meter long and could reach speeds of 22 nautical kilo meters per hour. It was sold for scrap in 1883.