Armstrong 40-pounder BL in January 1859 and the 100-pounder BL in September 1859; contrary to expectations, hits on her armour from the 40-pounder and 100-pounder had no serious effect. She was used in trials with a prototype Coles turret in 1861 and in so doing became the first warship to be fitted with a turret. She was broken up by Castle at Charlton in 1864. Glatton was also broken up in 1864. Thunder was broken up at Chatham in June 1874. Footnotes Ironclad floating batteries Floating batteries of the Royal Navy