HMS Black Prince, Ironclad!
'A black vicious ugly customer as ever I saw, whale-like in size, and with as
terrible a row of incisor teeth as ever closed on a French frigate'
Built at Glasgow, Scotland, by Robert Napier, her completion was delayed until September 1862 by a dry dock accident during her outfitting. The ship was the most important war ship ever built by Robert Napier but it also destroyed his career as he had seriously underestimated the cost of her construction this put the shipbuilding yard in severe financial straits for many years to come.
When completed the Black Prince was assigned to the Channel Fleet until 1866. Then sent to the Irish coast and was the Flag Ship of the Queenstown Division of Coast Guards. In 1867 she carried a battalion of Royal Marines for service in Ireland in connection with the Fenian uprisings.
Overhauled and rearmed in 1867-68, she was sent as a guardship on the Clyde river. This duty was interrupted in 1869 when she and her sister ship, Warrior, towed a large floating dry dock from the Azores to Bermuda.
Refitted again in 1874-75 she now rejoined the Channel Fleet, as flagship of the second-in-command. Later in that decade she crossed the Atlantic to visit Canada. In 1878 she enters the Reserve Fleet only being reactivated periodically for the annual fleet exercises.
Then stationed at Queenstown, Ireland, where she became a harbor training ship in 1896. She was renamed Emerald in 1903. Sailing to Plymouth in 1910 she was named Impregnable III and became a training facility ship. She was sold for scrap in 1923.