Awarship orcombatant ship is aship that is used fornaval warfare. Usually they belong to thenavy branch of thearmed forces of anation,[1] though they have also been operated by individuals,cooperatives andcorporations. As well as being armed, warships are designed to withstand damage and are typically faster and more maneuverable thanmerchant ships. Unlike a merchant ship, which carries cargo, a warship typically carries only weapons, ammunition and supplies for its crew.
In wartime, the distinction between warships and merchant ships is often blurred. Until the 17th century it was common for merchant ships to be pressed into naval service, and not unusual for more than half of afleet to be composed of merchant ships—there was not a large difference in construction, unlike the difference between a heavily armouredbattleship and an ocean liner. Until the threat ofpiracy subsided in the 19th century, it was normal practice to arm largermerchant ships such asgalleons. Warships have also often been used astroop carriers or supply ships, such as by theFrench Navy in the 18th century or theImperial Japanese Navy during the Second World War. In war since the early 20th century, merchant ships were often armed and used asauxiliary warships, such as theQ-ships of theFirst World War and thearmed merchant cruisers of theSecond World War.
Submarine, are ships capable of staying submerged for days. Modern submarines can stay underwater for months, with food supplies as the only limiting factor.
Fleet submarine is a type of submarine with the speed, range, and endurance to operate as part of a navy's battlefleet.
Attack Submarine is a submarine with the purpose of attacking other submarines.
Coastal submarine or littoral submarine is a small, maneuverable type of submarine with shallow draft well suited to navigation of coastal channels and harbors.
Midget submarine is any submarine under 150 tons, typically operated by a crew of one or two but sometimes up to six or nine.
Submarine aircraft carrier is a submarine equipped with aircraft for observation or attack missions. These submarines saw their most extensive use during World War II, although their operational significance remained small.
Cruiser submarine were a type of a very large submarine designed to remain at sea for extended periods in areas distant from base facilities.
Amphibious assault ship is a type of amphibious warfare ship employed to land and support ground forces with ship-deployedhelicopters andV/STOL aircraft on enemy territory by an amphibious assault.
Amphibious transport dock is an amphibious warfare ship, that embarks, transports, and lands elements of a landing force for expeditionary warfare missions.
Landing craft are small and medium seagoing watercraft, such asboats andbarges, used to convey a landing force (infantry and vehicles) from the sea to the shore during an amphibious assault.
Landing Craft Utility is a type of landing craft used by amphibious forces to transport equipment and troops to the shore. They are capable of transporting tracked or wheeled vehicles and marines from amphibious assault ships tobeachheads.
Capital ship, the largest and most important ships in a nation's fleet. These were previously battlecruisers, battleships, and aircraft carriers, but the first two warship types are now no longer used.
Aircraft cruiser (also known as aviation cruiser or cruiser-carrier) is a type of warship that combines the features of the aircraft carrier and a surface warship, such as a cruiser or battleship.
Seaplane tender, aboat orship that supports the operation ofseaplanes. Some of these vessels, also known as seaplane carriers, could not only carry seaplanes but also provided all the facilities needed for their operation; these ships are regarded by some as the firstaircraft carriers and became obsolete at the end of the Second World War.
Battleship, a large, heavily armored warship equipped with many powerful guns. A term which generally post-dates sailing warships.
Pre-dreadnought battleship, sea-going battleships built to a common design before the launch of dreadnoughts, between the mid-1880s to the early 1900s. Pre-dreadnoughts commonly featured a mixed main battery composed of several different caliber guns.
Dreadnought, an early 20th-century battleship, which set the pattern for all subsequent battleship construction. Dreadnoughts differ from pre-dreadnoughts in that they feature an all-big-gun main battery. The advantage lies in that if all the big guns have the same characteristics, only one firing solution will be needed to aim them all.
Fast battleships were battleships which emphasized speed without – in concept – undue compromise of either armor or armament.
Battlecruiser, a ship with battleship-level armament and cruiser-level armour; typically faster than a battleship because the reduction in armour allowed mounting of more powerful propulsion machinery, or the use of a more slender hull shape with a lower drag coefficient.
Cruiser, a fast, independent warship. Traditionally, cruisers were the smallest warships capable of independent action. As of 2024, only two countries operated active duty vessels formally classed as cruisers: theUnited States andRussia.
Armored cruiser was a type of warship of the late 19th and early 20th centuries. It was designed like other types of cruisers to operate as a long-range, independent warship, capable of defeating any ship apart from a battleship and fast enough to outrun any battleship it encountered.
Heavy cruiser was a type of cruiser, a naval warship designed for long range and high speed, armed generally with naval guns of roughly 203 mm (8 in) caliber; its parameters were dictated by theWashington Naval Treaty of 1922 and theLondon Naval Treaty of 1930.
Pocket battleship, nickname for the Deutschland-class heavy cruisers.
Light cruiser is a type of small or medium-sized warship. The term is a shortening of the phrase "lightarmored cruiser", describing a small ship that carried armor in the same way as an armored cruiser: a protective belt and deck.
Scout cruiser was a type of warship of the early 20th century, which were smaller, faster, more lightly armed and armoured than protected cruisers or light cruisers, but larger than contemporary destroyers. They were used forscouting.
Protected cruiser is a type of naval cruiser of the late-19th century, gained their description because an armored deck offered protection for vital machine-spaces from fragments caused by shells exploding above them.
Coastal defence ship were a type of cruiser-sized warship built for the purpose of coastal defense.
Destroyer, a fast and highly maneuverable warship, traditionally incapable of independent action. Originally developed to counter the threat oftorpedo boats, they are now the largest independent warship generally seen on the ocean.
Escort destroyer was a small warship built to full naval standards which was optimised for air-defence and anti-submarine duties in wartime, but which retained many of the capabilities of a traditional fleet destroyer, enabling it to conduct operations in conjunction with main fleet units as well as carrying out convoy escort and ASW patrols.
Destroyer escort was theUnited States Navy mid-20th-century classification for a 20-knot (37 km/h; 23 mph), warship designed with the endurance necessary to escort mid-ocean convoys of merchant marine ships similar to frigates.
Frigate, originally a medium-sized sailing ship. Although they date back to the 17th century, frigates in modern navies are typically used to protect merchant ships and other warships.
Armoured frigate are frigates with armour which was added to ships based on existing frigate and ship of the line designs. The additional weight of the armour on these first ironclad warships meant that they could have only one gun deck, and they were technically frigates, even though they were more powerful than existing ships-of-the-line and occupied the same strategic role.
Corvettes were small ships during the age of sail. The concept was revived again in WWII as a merchant convoy escort and anti-submarine ship. Today they are used foranti-submarine warfare and patrolling.[3]
Motor torpedo boat is a type of fast torpedo boat, especially of the mid 20th century.
Patrol vessels are relatively small naval vessels generally designed for coastal defence, border protection, immigration law-enforcement, search and rescue duties. They may be broadly classified as inshore patrol vessels or offshore patrol vessels.
Minehunter are naval vessels that seek, detect, and destroys individual naval mines.
Mine countermeasures vessels are atype of naval ships designed for the location of and destruction of naval mines which combines the role of a minesweeper and minehunter in one hull.
Fire ship, a vessel of any sort set on fire and sent into an anchorage or fleet with the intention of causing destruction and chaos. Exploding fire ships are calledhellburners. The development ofunmanned surface vehicles has revived the use of fire ships.
River gunboat is a type of gunboat for riverine use.
Flat-iron gunboats were a number of classes of coastal gunboats generally characterized by small size, low freeboard, the absence of masts, and the mounting of a single non-traversing large gun, aimed by pointing the vessel.
Torpedo gunboat were a form of gunboat armed withtorpedoes and designed for hunting and destroying smaller torpedo boats.
Q-ship, also known as Q-boats, decoy vessels, special service ships, or mystery ships, were heavily armed merchant ships with concealed weaponry, designed to lure submarines into making surface attacks. This gave Q-ships the chance to open fire and sink them.
Armed yachts were modifiedyachts that were armed with weapons and were typically in the service of a navy.
Balloon carrier was a type of ship equipped with ahot-air balloon tied to the ship with a rope orcable, which was used forobservation. This type of ship was later replaced by seaplane tenders and aircraft carriers.
Sloop-of-war was a sailing vessel category later revived in WWII as a convoy escort ship.
Screw sloop was apropeller-driven sloop-of-wars used during the mid-19th Century.
Ironclad, a wooden warship with external iron plating.
Central battery ship in European continental navies, was a development of the (high-freeboard) broadside ironclad of the 1870s
Turret ship was a 19th-century type of warship, the earliest to have their guns mounted in a revolvinggun turret, instead of abroadside arrangement.
Floating battery is a kind of armed watercraft, often improvised or experimental, which carries heavy armament but has few other qualities as a warship.
Ship of the line, a sailing warship capable of standing in theline of battle. A direct predecessor to the later battleship.
Dispatch boats were small boats, and sometimes large ships, tasked to carry military dispatches from ship to ship or from ship to shore or, in some cases from shore to shore. Dispatch boats were employed when other means of transmitting a message was not possible or safe or as quick.
Man-of-war, a British Navy expression for a sailing warship.
Grab was a type of ship common on theMalabar Coast in the 18th and 19th centuries. The ghurāb was originally a galley, but the type evolved into sailing ships armed withcannons.
Gallivat were small, armed type of boats, with sails and oars, armed withswivel guns and used on theMalabar Coast in the 18th and 19th centuries.
Galleass, a sailing and rowing warship, equally well suited to sailing and rowing.
Galley was a type of ship optimised for propulsion by oars. Galleys were historically used for warfare, trade, and piracy.
War canoe was a kind of watercraft of thecanoe type designed and outfitted for warfare usingbow,spear andshield wieldingwarriors. During the gunpowder era a single brass or ironcannon was mounted on thebow orstern along withmusketeers. These warships were used by manytribes andcultures all around the globe.
Geobukseon (literally Turtle ship) were wooden sail and oar propelledKorean warships armed with cannons.
Panokseon (literally board roofed ship) were a type ofKorean wooden warships propelled by both sailing and rowing armed with cannons andHwacha multiple rocket launchers.
Atakebune were wooden oar propelled16th Century Japanese warships armed with few cannons, arquebusiers, and archers. They were mostly bulky floating fortifications.
Mengchong (literally Covered Assaulter) was a type of leather-covered assault warship used in the 2nd and 3rd centuries CE in China.
Louchuan (literally Tower Ship) was a type of warship used as a floating fortress in Ancient China. The Louchuan was meant to board troops onto enemy ships. Although they were also armed withtrebuchets for ranged combat.
Wugongchuan (literally Centipede Ship) was a Chinese oared vessel of the 16th century inspired by the Portuguese galley.
Bireme, an ancient vessel, propelled by two banks of oars.
Trireme, an ancient warship propelled by three banks of oars.
Quadrireme, an ancient warship invented inCarthage with two levels of oarsmen, and was therefore lower than the quinquereme.
Quinquereme, an ancient warship propelled by three banks of oars. On the upper row, two rowers hold one oar; on the middle row, two rowers; and on the lower row, one man to an oar.
Hexareme, an ancient warship invented inSyracuse. The exact arrangement of the hexareme's oars is unclear. If it evolved naturally from the earlier designs, it would be a trireme with two rowers per oar.
Septireme, an ancient warship invented by theMacedonia, the septireme was derived by adding a standing rower to the lower level of the hexareme.
Enneres, a type of warship whose oaring system may have been a modification of the quadrireme, with two teams of five and four oarsmen.
Deceres, a type of warship which is present alongside "nines" in the fleet ofAntigonus I Monophthalmus in 315 BC. It is most likely that the "ten" was derived from adding another oarsman to the "nine".
Tessarakonteres, a very largecatamaran galley reportedly built byPtolemy IV Philopator ofEgypt. It had sevennaval rams, with one primary, and the deck would have provided a stable platform forcatapults that were often mounted on supergalleys. However, the "forty" was likely just a showpiece; Plutarch describes the ship as for exhibition only.
Hemiolia, light and fast warship that appeared in the early 4th century BC. It was particularly favoured by pirates in the eastern Mediterranean, but also used by Alexander the Great as far as the riversIndus andJhelum, and by the Romans as a troop transport. According to one view, it was manned by half the number of oarsmen to make room for the soldiers. According to another, there were one and a half files of oarsmen on each side, with the additional half file placed amidships, where the hull was wide enough to accommodate them.
Trihemiolia, this type was classed with the trireme, and had two and a half files of oarsmen on each side. Judging from theLindos relief and the famousNike of Samothrace, both of which are thought to representtrihemioliai, the two upper files would have been accommodated in an oarbox, with the half-file located beneath them in the classicthalamitai position of the trireme.
Liburna, a type of small galley used for raiding and patrols. It was originally used by theLiburnians, a pirate tribe fromDalmatia, and later used by theRoman Navy. It had one bench with 25 oars on each side, while in the lateRoman Republic, it was equipped with two banks of oars (a bireme), remaining faster, lighter, and more agile than triremes.
Naval artillery was redeveloped in the 14th century, butcannon did not become common at sea until the guns were capable of being reloaded quickly enough to be reused in the same battle. The size of a ship required to carry a large number of cannons made oar-based propulsion impossible, and warships came to rely primarily on sails. The sailingman-of-war emerged during the 16th century.
By the middle of the 17th century, warships were carrying increasing numbers of cannons on theirbroadsides andtactics evolved to bring each ship's firepower to bear in aline of battle. The man-of-war now evolved into theship of the line. In the 18th century, thefrigate andsloop-of-war – too small to stand in the line of battle – evolved to escortconvoy trade, scout for enemy ships andblockade enemy coasts.[4]
Diagrams of first and third rate warships, England, 1728
During the 19th century a revolution took place in the means ofmarine propulsion,naval armament andconstruction of warships.Marine steam engines were introduced, at first as an auxiliary force, in the second quarter of the 19th century. TheCrimean War gave a great stimulus to the development of guns. The introduction of explosiveshells soon led to the introduction ofiron, and latersteel,naval armour for the sides and decks of larger warships. The firstironclad warships, the FrenchGloire and BritishWarrior, made wooden vessels obsolete. Metal soon entirely replaced wood as the main material for warship construction.
From the 1850s, the sailing ships of the line were replaced by steam-poweredbattleships, while the sailingfrigates were replaced by steam-poweredcruisers.The armament of warships also changed with the invention of the rotatingbarbettes andturrets, which allowed the guns to be aimed independently of the direction of the ship and allowed a smaller number of larger guns to be carried.
The final innovation during the 19th century was the development of thetorpedo and development of thetorpedo boat. Small, fast torpedo boats seemed to offer an alternative to building expensive fleets of battleships.
Pre-dreadnought battleships were sea-going battleships built between the mid- to late- 1880s and 1905, before the launch of HMS Dreadnought in 1906. The pre-dreadnought ships replaced the ironclad battleships of the 1870s and 1880s. Built from steel, protected by case-hardened steel armour, and powered by coal-fired triple-expansion steam engines, pre-dreadnought battleships carried a main battery of very heavy guns in fully-enclosed rotating turrets supported by one or more secondary batteries of lighter weapons. The role ofcorvettes,sloops andfrigates were taken by new types of ships likedestroyers,protected cruisers andarmoured cruisers.
Another revolution in capital warship design began shortly after the start of the 20th century, when Britain launched theRoyal Navy's all-big-gunbattleshipDreadnought in 1906. Powered bysteam turbines, it was bigger, faster and more heavily gunned thanany existing battleships, which it immediately rendered obsolete. It was rapidly followed by similar ships in other countries. The Royal Navy also developed the firstbattlecruisers. Mounting the same heavy guns as thedreadnoughts on an even largerhull, battlecruisers sacrificed armour protection for speed. Battlecruisers were faster and more powerful than all existing cruisers, but much more vulnerable to shellfire than contemporary battleships. Thetorpedo-boat destroyer was developed at the same time as the dreadnoughts. Bigger, faster and more heavily gunned than thetorpedo boat, the destroyer evolved to protect thecapital ships from the menace of the torpedo boat.
At this time, Britain also introduced the use offuel oil to power steam warships, instead of coal. Oil produced twice as much power per unit weight as coal, and was much easier to handle.[5][6] Tests were conducted by the Royal Navy in 1904 involving the torpedo-boat destroyerSpiteful, the first warship powered solely by fuel oil.[7][8] These proved its superiority, and all warships procured for the Royal Navy from 1912 were designed to burn fuel oil.[9][10]
During the lead-up to theSecond World War,Germany and the United Kingdom once again emerged as the two dominantAtlantic sea powers. The German navy, under theTreaty of Versailles, was limited to only a few minor surface ships. But the clever use of deceptive terminology, such asPanzerschiffe deceived the British andFrench commands. They were surprised when ships such asAdmiral Graf Spee,Scharnhorst, andGneisenau raidedAllied supply lines. The greatest threat however, was the introduction of theKriegsmarine's largest vessels,Bismarck andTirpitz.Bismarck was heavily damaged and sunk/scuttled after a series of sea battles in the north Atlantic in 1941, whileTirpitz was destroyed by theRoyal Air Force in 1944. The BritishRoyal Navy gained dominance of the European theatre by 1943.
The Second World War brought massive changes in the design and role of several types of warships. For the first time, theaircraft carrier became the clear choice to serve as the main capital ship within a naval task force. World War II was the only war in history in which battles occurred between groups of carriers. World War II saw the first use ofradar in combat. It brought the first naval battle in which the ships of both sides never engaged in direct combat, instead sending aircraft to make the attacks, as in theBattle of the Coral Sea.
Modern warships are generally divided into seven main categories, which are:aircraft carriers,cruisers,[a]destroyers,frigates,corvettes,submarines, andamphibious warfare ships. Battleships comprise an eighth category, but are not in current service with any navy in the world. Only the deactivated AmericanIowa-class battleships still exist as potential combatants, and battleships in general are unlikely to re-emerge as a ship class without redefinition. Thedestroyer is generally regarded as the dominant surface-combat vessel of most modern blue-water navies. However, the once distinct roles and appearances ofcruisers,destroyers,frigates, andcorvettes have blurred. Most vessels have come to be armed with a mix of anti-surface, anti-submarine and anti-aircraft weapons. Class designations no longer reliably indicate a displacement hierarchy, and the size of all vessel types has grown beyond the definitions used earlier in the 20th century. Another key difference between older and modern vessels is that all modern warships are "soft", without the thick armor and bulging anti-torpedo protection of World War II and older designs.
By 1982 theUnited Nations Convention on the Law of the Sea (UNCLOS) treaty negotiations had produced a legal definition of what was then generally accepted as a late-twentieth century warship. The UNCLOS definition was : "A warship means a ship belonging to the armed forces of a State bearing the external marks distinguishing such ships of its nationality, under the command of an officer duly commissioned by the government of the State and whose name appears in the appropriate service list or its equivalent, and manned by a crew which is under regular armed forces discipline."[1]
The first practical submarines were developed in the late 19th century, but it was only after the development of thetorpedo that submarines became truly dangerous (and hence useful). By the end of theFirst World War submarines had proved their potential. During theSecond World War Nazi Germany's fleet ofU-boats (submarines) almost starved Britain into submission and inflictedhuge losses on US coastal shipping. The success of submarines led to the development of newanti-submarineconvoy escorts during the First and Second World Wars, such as thedestroyer escort. Confusingly, many of these new types adopted the names of the smaller warships from theage of sail, such ascorvette,sloop andfrigate.
Aseaplane tender is a ship that supports the operation ofseaplanes. Some of these vessels, known as seaplane carriers, could not only carry seaplanes but also provided all the facilities needed for their operation; these ships are regarded by some as the first aircraft carriers and appeared just before theFirst World War.
A major shift in naval warfare occurred with the introduction of theaircraft carrier. First atTaranto and then atPearl Harbor, the aircraft carrier demonstrated its ability to strike decisively at enemy ships out of sight and range of surface vessels. By the end of the Second World War, the carrier had become the dominant warship.
An amphibious warfare ship is an amphibious vehicle warship employed to land and support ground forces, such asmarines, on enemy territory during an amphibious assault.Specialized shipping can be divided into two types, most crudely described as ships and craft. In general, the ships carry the troops from the port of embarkation to the drop point for the assault and the craft carry the troops from the ship to the shore. Amphibious assaults taking place over short distances can also involve the shore-to-shore technique, where landing craft go directly from the port of embarkation to the assault point. Amphibious assault ships have a well deck with landing craft which can carrytanks and otherarmoured fighting vehicles and also have a deck like ahelicopter carrier for helicopters andV/STOL aircraft.
^TheKirov-classbattlecruiser is a guided missile cruiser that straddles the line between a heavy cruiser and a battlecruiser. They are often called battlecruiser by Western defense commentators.[11]
Dahl, E.J. (2001),"Naval innovation: From coal to oil"(PDF),Joint Force Quarterly (Winter 2000–01):50–6,archived(PDF) from the original on 22 October 2016, retrieved28 November 2016
Lyon, D. (2005) [1996],The First Destroyers, Mercury,ISBN1-84560-010-X
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