Turret ships were a 19th-century type of warship, the earliest to have their guns mounted in a revolving gun turret, instead of a broadside arrangement.
Turret ships were a 19th-century type of warship, the earliest to have their guns mounted in a revolving gun turret, instead of a broadside arrangement.
Before the development of large-calibre, long-range guns in the mid-19th century, the classic ship of the line design used rows of port-mounted guns on each side of the ship, often mounted in casemates. Firepower was provided by a large number of guns which could only be aimed in a limited arc from one side of the ship. Due to instability, fewer larger and heavier guns can be carried on a ship. Also, the casemates often sat near the waterline, which made them vulnerable to flooding and restricted their use to calm seas.
Turrets were weapon mounts designed to protect the crew and mechanism of the artillery piece and with the capability of being aimed and fired in many directions as a rotating weapon platform. This platform can be mounted on a fortified building or structure such as an anti-naval land battery, or on a combat vehicle, a naval ship, or a military aircraft.
Designs for a rotating gun turret date back to the late 18th century. [1] Practical rotating turret warships were independently developed in Great Britain and the United States with the availability of steam power in the mid-19th Century.
During the Crimean War, Captain Cowper Phipps Coles of the British Royal Navy constructed a raft with guns protected by a 'cupola' and used the raft, named Lady Nancy, to shell the Russian town of Taganrog in the Black Sea. Lady Nancy "proved a great success", [2] and Coles patented his rotating turret after the war. Following Coles' patenting, the British Admiralty ordered a prototype of Coles' design in 1859, which was installed in the floating battery vessel, HMS Trusty, for trials in 1861, becoming the first vessel to be fitted with a revolving gun turret. Coles' design aim was to create a ship with the greatest possible all round arc of fire, as low in the water as possible to minimise the target. [3]
The British Admiralty accepted the principle of the gun turret as a useful innovation, and incorporated it into other new designs. Coles submitted a design for a ship having ten domed turrets each housing two large guns. The design was rejected as impractical, although the Admiralty remained interested in turret ships and instructed its own designers to create better designs.
Coles enlisted the support of Prince Albert, who wrote to the First Lord of the Admiralty, the Duke of Somerset, supporting the construction of a turret ship. In January 1862, the Admiralty agreed to construct a ship, HMS Prince Albert, which had four turrets and a low freeboard, intended only for coastal defence. Coles was allowed to design the turrets, but the ship was the responsibility of the chief Constructor Isaac Watts. [3]
Another of Coles's designs, HMS Royal Sovereign, was completed in August 1864. Its existing broadside guns were replaced with four turrets on a flat deck and the ship was fitted with 5.5 inches (140 mm) of armour in a belt around the waterline. [3] Early ships like USS Monitor and Royal Sovereign had little sea-keeping qualities being limited to coastal waters. Coles, in collaboration with Sir Edward James Reed, went on to design and build HMS Monarch, the first seagoing warship to carry her guns in turrets. Laid down in 1866 and completed in June 1869, it carried two turrets, although the inclusion of a forecastle and poop deck prevented the guns firing fore and aft. [3]
The gun turret was independently invented by the Swedish inventor John Ericsson in the United States. [4] Ericsson designed USS Monitor in 1861. Erickson's most prominent design feature was a large cylindrical gun turret mounted amidships above the low-freeboard upper hull, also called the "raft". The raft extended well past the sides of the lower, more traditionally shaped lower hull. A small armoured pilot house was fitted on the upper deck towards the bow, however, its position prevented Monitor from firing her guns straight forward. [5] [lower-alpha 1] One of Ericsson's prime goals in designing the ship was to present the smallest possible target to enemy gunfire. [6]
The turret's rounded shape helped to deflect cannon shot. [7] [8] A pair of donkey engines rotated the turret through a set of gears; a full rotation was made in 22.5 seconds during testing on 9 February 1862. [6] This design was technologically inferior to Coles', and made fine control of the turret difficult. [4] If turret rotation overshot its mark it was difficult to make a correction. Either the engine would have to be placed in reverse or another full rotation was necessary.
Including the guns, the turret weighed approximately 160 long tons (163 t); the entire weight rested on an iron spindle that had to be jacked up using a wedge before the turret could rotate. [6] The spindle was 9 inches (23 cm) in diameter, which gave it ten times the strength needed in preventing the turret from sliding sideways. [9] When not in use, the turret rested on a brass ring on the deck that was intended to form a watertight seal. In service, however, this proved to leak heavily, despite caulking by the crew. [6] The gap between the turret and the deck proved to be a problem as debris and shell fragments entered the gap and jammed the turrets of several Passaic-class monitors, which used the same turret design, during the First Battle of Charleston Harbor in April 1863. [10] Direct hits at the turret with heavy shot also had the potential to bend the spindle, which could also jam the turret. [11] [12] [13]
The turret was intended to mount a pair of 15-inch (381 mm) smoothbore Dahlgren guns, but they were not ready in time and 11-inch (279 mm) guns were substituted. [6] Each gun weighed approximately 16,000 pounds (7,300 kg). Monitor's guns used the standard propellant charge of 15 pounds (6.8 kg) specified by the 1860 ordnance for targets "distant", "near", and "ordinary", established by the gun's designer Dahlgren himself. [14] They could fire a 136-pound (61.7 kg) round shot or shell up to a range of 3,650 yards (3,340 m) at an elevation of +15°. [15] [16]
HMS Devastation of 1871 and HMS Thunderer of 1872 represented the culmination of this pioneering work. These ironclad turret ships were designed by Edward James Reed. They were also the world's first mastless battleships, built with a central superstructure layout, and became the prototype for all subsequent warships, leading directly to the modern battleship.
USS Monitor was an ironclad warship built for the Union Navy during the American Civil War and completed in early 1862, the first such ship commissioned by the Navy. Monitor played a central role in the Battle of Hampton Roads on 9 March under the command of Lieutenant John L. Worden, where she fought the casemate ironclad CSS Virginia to a stalemate. The design of the ship was distinguished by its revolving turret, which was designed by American inventor Theodore Timby; it was quickly duplicated and established the monitor class and type of armored warship built for the American Navy over the next several decades.
John Ericsson was a Swedish-American inventor. He was active in England and the United States.
A monitor is a relatively small warship that is neither fast or strongly armored but carries disproportionately large guns. They were used by some navies from the 1860s, during the First World War and with limited use in the Second World War.
An ironclad is a steam-propelled warship protected by iron or steel armor plates, 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 pre-empting the British Royal Navy.
A warship or combatant ship is a naval ship that is built and primarily intended for naval warfare. Usually they belong to the armed forces of a state. As well as being armed, warships are designed to withstand damage and are typically faster and more maneuverable than merchant ships. Unlike a merchant ship, which carries cargo, a warship typically carries only weapons, ammunition and supplies for its crew. Warships usually belong to a navy, though they have also been operated by individuals, cooperatives and corporations.
HMVS Cerberus is a breastwork monitor that served in the Victoria Naval Forces, the Commonwealth Naval Forces (CNF), and the Royal Australian Navy (RAN) between 1871 and 1924.
HMS Captain was a major warship built for the Royal Navy as a semi-private venture, following a dispute between the designer and the Admiralty. With wrought-iron armour, steam propulsion, and the main battery mounted in rotating armoured turrets, the ship was, at first appearance, quite innovative and formidable. However, poor design and design changes resulted in a vessel that was overweight and ultimately unstable. In terms of seaworthiness she was reported as closely comparable to the higher freeboard turret-ship HMS Monarch, but her reduced freeboard added a sense of "sluggishness". The Captain capsized in heavy seas, only five months after being commissioned, with the loss of nearly 500 lives.
Steam frigates and the smaller steam corvettes, steam sloops, steam gunboats and steam schooners, were steam-powered warships that were not meant to stand in the line of battle. There were some exceptions like for example the French Napoléon class steam ship of the line was meant to stand in the line of battle, making it the world's first steam battleship. The first such ships were paddle steamers. Later on the invention of screw propulsion enabled construction of steam-powered versions of the traditional ships of the line, frigates, corvettes, sloops and gunboats.
Pre-dreadnought battleships were sea-going battleships built from the mid- to late- 1880s to the early 1900s. Their designs were conceived before the appearance of HMS Dreadnought in 1906 and their classification as 'pre-dreadnought' is retrospectively applied. In their day, they were simply known as 'battleships' or else more rank-specific terms such as 'first-class battleship' and so forth. The pre-dreadnought battleships were the pre-eminent warships of their time and replaced the ironclad battleships of the 1870s and 1880s.
USS Onondaga was an ironclad river monitor built for the Union Navy during the American Civil War. Commissioned in 1864, the ship spent her entire active career with the James River Flotilla covering the water approaches to the Confederate States capital of Richmond, Virginia, although her only notable engagement was the Battle of Trent's Reach. After the war, she was purchased by France where she served as a coastal defense ship in the French Navy.
Naval artillery is artillery mounted on a warship, originally used only for naval warfare and then subsequently used for more specialized roles in surface warfare such as naval gunfire support (NGFS) and anti-aircraft warfare (AAW) engagements. The term generally refers to tube-launched projectile-firing weapons and excludes self-propelled projectiles such as torpedoes, rockets, and missiles and those simply dropped overboard such as depth charges and naval mines.
A gun turret is a mounting platform from which weapons can be fired that affords protection, visibility and ability to turn and aim. A modern gun turret is generally a rotatable weapon mount that houses the crew or mechanism of a projectile-firing weapon and at the same time lets the weapon be aimed and fired in some degree of azimuth and elevation.
Captain Cowper Phipps Coles, C.B., R.N., was an English naval captain with the Royal Navy. Coles was also an inventor; in 1859, he was the first to patent a design for a revolving gun turret. Upon appealing for public support, his turrets were installed on HMS Prince Albert and HMS Royal Sovereign. Coles died in a maritime accident in 1870 when HMS Captain, an experimental warship built to his designs, capsized and sank with him on board.
USS Puritan was one of two ocean-going ironclad monitors designed by John Ericsson during the American Civil War of 1861–1865. Launched in mid-1864, construction was suspended sometime in 1865. The Navy Department had specified two twin-gun turrets over Ericsson's protests, but finally agreed to delete the second turret in late 1865. The Navy Department evaded the Congressional refusal to order new ships in 1874 by claiming that the Civil War-era ship was being repaired while building a new monitor of the same name.
The two Scorpion-class ironclads, HMS Scorpion and HMS Wivern, were ironclad warships ordered by the Confederate States Navy in 1862 and seized in 1863 by the British to prevent their delivery. This would have violated the Foreign Enlistment Act, which forbade British subjects to build or arm any ships for governments at war with governments friendly to Great Britain. The Scorpion class were masted turret ships, each with two gun turrets that were designed to mount a pair of heavy muzzle-loading guns. They were purchased for service in the Royal Navy in 1864 and served briefly with the Channel Fleet before they became guard ships at Bermuda and Hong Kong. Scorpion was sold in 1903 and sank under tow to be scrapped, while Wivern was sold for scrap in 1922.
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.
The Casco-class monitor was a unique class of light draft monitor built on behalf of the United States Navy for the Mississippi theatre during the American Civil War. The largest and most ambitious ironclad program of the war, the project was dogged by delays caused by bureaucratic meddling. Twenty ships of the class were eventually built at great expense, but proved so unseaworthy when trialed that they were quickly sidelined, causing a public scandal.
The Uragan class was a class of monitors built for the Baltic Fleet of the Imperial Russian Navy. The ships were built to the plans of the American Passaic-class monitors, a design that was tested on a smaller scale on USS Monitor. A total of 10 ships were constructed at five different shipyards in Saint Petersburg, all entering service in 1865. The ships were among the first ironclad warships in the Russian Navy.
The Milwaukee-class monitors were a class of four riverine ironclad monitors built during the American Civil War. Several supported Union forces along the Mississippi River in mid-1864 before participating in the Battle of Mobile Bay in August. Chickasaw and Winnebago bombarded Confederate coastal fortifications during the battle and during subsequent operations as well as engaging the ironclad Tennessee II. The other two ships arrived at Mobile Bay after the battle and all four supported the land attacks on Mobile in March–April 1865. Milwaukee struck a torpedo during this time and sank. The surviving three ships were sold in 1874; Chickasaw was converted into a ferry and survived until 1944 when she was scuttled. Her wreck was discovered in 2004.
A semi-submersible naval vessel is a hybrid warship, that combines the properties of a surface ship and submarine by using water ballast to partially immerse and minimize its above-waterline profile, thereby improving its stealth characteristics when in hostile waters. The USS Monitor was an antecedent to such craft with its low-profile deck and gun turret. Russian and North Korean semi-submersible naval vessels evolved from torpedo boats and special forces boats that could partially submerge to perform their missions. The US Navy SEALs use such vessels for clandestine special forces actions. Efforts to embody advantageous surface-ship characteristics into submarines have not been widely adopted.
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