Aquatint by H Papprill after W Knell, showing the 'Terrible' in a battle scene against men-of-war. Small paddle steamers were used by the British Navy during the 1820s as tugs and dispatch vesels. From 1830 larger naval steamers were built and by the end of the decade steam paddle frigates formed part of the fighting strength of the Navy. At the time of construction, this 20-gun paddle frigate was one of the most powerful steam war vesels in the world. During the Crimean War she took part in operations around Sebastapol.
© Science Museum / Science & Society Picture Library