An ironclad was a steam-propelled warship protected by steel or iron armor constructed from 1859 to the early 1890s. The ironclad was developed as a result of the vulnerability of wooden warships to explosive or incendiary shells. The first ironclad battleship, Gloire, was launched by the French Navy in November 1859, narrowly preempting the British Royal Navy. However, Britain built the first completely iron-hulled warships.
HMS Hood was a modified Royal Sovereign-class pre-dreadnought battleship built for the Royal Navy in the early 1890s. She differed from the other ships of the class in that she had cylindrical gun turrets instead of barbettes and a lower freeboard. She served most of her active career in the Mediterranean Sea, where her low freeboard was less of a disadvantage. The ship was placed in reserve in 1907 and later became the receiving ship at Queenstown, Ireland. Hood was used in the development of anti-torpedo bulges in 1913 and was scuttled in late 1914 to act as a blockship across the southern entrance of Portland Harbour after the start of World War I.
HMS Dreadnought was a Royal Navy battleship, the design of which revolutionised naval power. The ship's entry into service in 1906 represented such an advance in naval technology that her name came to be associated with an entire generation of battleships, the dreadnoughts, as well as the class of ships named after her. Likewise, the generation of ships she made obsolete became known as pre-dreadnoughts. Admiral Sir John "Jacky" Fisher, First Sea Lord of the Board of Admiralty, is credited as the father of Dreadnought. Shortly after he assumed office in 1904, he ordered design studies for a battleship armed solely with 12 in (305 mm) guns and a speed of 21 knots. He convened a Committee on Designs to evaluate the alternative designs and to assist in the detailed design work.
The fourth HMS Colossus was a Colossus class second-class British battleship, launched in 1882 and commissioned in 1886. She had a displacement of 9,520 tons, and an armament of 4 × 12-inch breechloaders, 5 × 6-inch guns and had a respectable speed of 15.5 knots.
HMS Sans Pareil was a Victoria-class battleship of the British Royal Navy of the Victorian era, her only sister ship being HMS Victoria.
Suffren was a predreadnought battleship built for the Marine Nationale in the first decade of the twentieth century. Completed in 1902, the ship was assigned to the Escadre de la Méditerranée for most of her career and often served as a flagship. She had an eventful career as she twice collided with French ships and twice had propeller shafts break before the start of World War I in 1914. Suffren was assigned to join the naval operations off the Dardanelles, where she participated in a series of attacks on the Ottoman fortifications guarding the straits.
HMS Hercules was a central-battery ironclad of the Royal Navy in the Victorian era, and was the first warship to mount a main armament of 10-inch (250 mm) calibre guns.
HMS Monarch was the first seagoing British warship to carry her guns in turrets, and the first British warship to carry guns of 12-inch (300 mm) calibre.
HMS Glatton was a breastwork monitor which served in the Victorian Royal Navy.
HMS Belleisle was one of the four ships that were under construction for foreign navies in British shipyards which were purchased by the British government for the Royal Navy in 1878, at the time of the Russian war scare.
HMS Inflexible was a Victorian ironclad battleship carrying her main armament in centrally placed turrets. The ship was constructed in the 1870s for the Royal Navy to oppose the perceived growing threat from the Italian Regia Marina in the Mediterranean.
HMS Agamemnon was a Victorian Royal Navy Ajax-class ironclad turret battleship, the sister ship of HMS Ajax. Agamemnon and Ajax were built to the same design, and were smaller and less expensive versions of Inflexible. The class is known as the Ajax class because Ajax was laid down first although Agamemnon was completed one day before her sister.
HMS Rupert was a battleship of the Victorian Royal Navy, whose principal weapon was designed to be her ram.
The Conqueror class battleships were ironclad warships which served in the Victorian Royal Navy, and whose main weapon was designed to be the ram.
HMS Conqueror was an ironclad battleship of the Victorian Royal Navy, whose main armament was an armoured ram.
HMS Anson was the last of six Admiral-class ironclad battleships built for the Royal Navy during the 1880s. The ship was completed, except for her armament, in 1887, but had to wait two years for her guns to be installed. She was assigned to the Channel Fleet in mid-1889 as a flagship for the fleet's second-in-command. Two years later, the passenger ship SS Utopia sank with the loss of 562 lives after colliding with Anson in the Bay of Gibraltar. In mid-1893, Anson was transferred to the Mediterranean Fleet, subsequently returning home in 1900 when she was assigned to the Reserve Fleet. She recommissioned for the Home Fleet in early 1901. Anson was paid off three years later and then sold for scrap in 1909.
All or nothing is a method of naval warship armor, best known for its employment on dreadnought battleships. The concept involves heavily armoring the areas most important to a ship while the rest of the ship receives no armor. The "all or nothing" concept avoided light or moderate thicknesses of armor: armor was used in the greatest practicable thickness or not at all, thereby providing "either total or negligible protection". Compared to previous armoring systems, "all or nothing" ships had thicker armor covering a smaller proportion of the hull.
Gaulois was one of three Charlemagne-class pre-dreadnought battleships built for the French Navy in the mid-1890s. Completed in 1899, she spent most of her career assigned to the Mediterranean Squadron. The ship accidentally rammed two other French warships early in her career, although neither was seriously damaged, nor was Gaulois.
HMS Neptune was an ironclad turret ship originally designed and built in Britain for Brazil, but acquired for the Royal Navy in 1878. Modifications to suit the Royal Navy took three years to complete and the ship did not begin her first commission until 1883 with the Channel Fleet. She was transferred to the Mediterranean Fleet in 1885, but refitted in Portsmouth in 1886–87. Neptune then became the coastguard ship for the 1st Class Reserve at Holyhead until 1893 when she was placed in reserve in Portsmouth. While she was being towed to the breakers in 1903, Neptune unintentionally rammed HMS Victory, then serving as a training hulk for the Naval Signal School, collided with HMS Hero, and narrowly missed several other ships. She was scrapped in Germany in 1904.
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