A twin battery of 64-pounder rifled muzzle-loading guns was added on a lower terrace in the 19th century.
The castle is a low, circular, stone structure and was armed with large muzzle-loading guns.
These were muzzle-loading guns, as had been used on ships from the 1500s.
The breech-loaders had a far longer range that the muzzle-loading guns, and could be fired faster.
This was a single shot, muzzle-loading gun that used the percussion cap firing mechanism.
They were muzzle-loading guns, with a rifled tube and rigid mount.
She was scrapped in 1908, well after her muzzle-loading guns were outdated.
Despite their obsolescence, she retained her muzzle-loading big guns to the end of her days.
In 1872 three 80-pounder rifled muzzle-loading guns were installed.
The ship was initially armed with a mix of 64-pounder 71-cwt and 64-cwt rifled muzzle-loading guns.