Misplaced Pages

Nuclear navy

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.

The Arktika class is a Russian (formerly Soviet ) class of nuclear-powered icebreakers . Also known by their Russian designations Project 10520 (first two ships) and Project 10521 (from third ship onwards), they were the world's largest and most powerful icebreakers until the 2016 launch of the first Project 22220 icebreaker , also named Arktika .

#241758

67-660: A nuclear navy , or nuclear-powered navy , refers to the portion of a navy consisting of naval ships powered by nuclear marine propulsion . The concept was revolutionary for naval warfare when first proposed. Prior to nuclear power, submarines were powered by diesel engines and could only submerge through the use of batteries. In order for these submarines to run their diesel engines and charge their batteries they would have to surface or snorkel. The use of nuclear power allowed these submarines to become true submersibles and unlike their conventional counterparts, they became limited only by crew endurance and supplies. Currently, only

134-551: A limited and asymmetric nature. Naval warfare developed when humans first fought from water-borne vessels. Before the introduction of the cannon and ships with enough capacity to carry them, navy warfare primarily involved ramming and boarding actions. In the time of ancient Greece and the Roman Empire , naval warfare centered on long, narrow vessels powered by banks of oarsmen (such as triremes and quinqueremes ) designed to ram and sink enemy vessels or come alongside

201-489: A sister ship of Bismarck , was almost put out of action by miniature submarines known as X-Craft . The X-Craft severely damaged her and kept her in port for some months. A major paradigm shift in naval warfare occurred with the introduction of the aircraft carrier . First at Taranto in 1940 and then at Pearl Harbor in 1941, the carrier demonstrated its ability to strike decisively at enemy ships out of sight and range of surface vessels. The Battle of Leyte Gulf (1944)

268-491: A 20%-90% enriched with 60% average enrichment uranium dispersed in an aluminum matrix. The chain reaction can be stopped in 0.6 seconds by the full insertion of safety rods. Arktika consumes up to 200 grams of fuel a day when breaking ice. There are 500 kg of uranium isotopes in each reactor, allowing for at least 13.7 years between changing reactor cores. The used cores are extracted and replaced in Murmansk,

335-822: A catastrophe for the Russian military in general and the Russian Navy in particular. Although neither party lacked courage, the Russians were defeated by the Japanese in the Battle of Port Arthur, which was the first time in warfare that mines were used for offensive purposes. The warships of the Baltic Fleet sent to the Far East were lost in the Battle of Tsushima. A further step change in naval firepower occurred when

402-400: A cumulative electric power of 10 MW. Three fixed-pitch propellers provide Arktika with its thrust, power, and maneuverability. The starboard and centerline propellers turn clockwise while the port turns counter clockwise to compensate. Each propeller sits at the end of a 20-meter (65.6 ft) shaft and has four blades, which weigh seven tons and are attached by nine bolts to the hub which

469-404: A group, which may be a small squadron of comparable ships, or a larger naval fleet of various specialized ships. The commander of a fleet travels in the flagship , which is usually the most powerful vessel in the group. Before radio was invented, commands from the flagship were communicated by means of flags. At night signal lamps could be used for a similar purpose. Later these were replaced by

536-437: A large number of cannon made oar-based propulsion impossible, and ships came to rely primarily on sails . Warships were designed to carry increasing numbers of cannon and naval tactics evolved to bring a ship's firepower to bear in a broadside , with ships-of-the-line arranged in a line of battle . The development of large capacity, sail-powered ships carrying cannon led to a rapid expansion of European navies, especially

603-656: A letter representing the ship type the reactor is designed for, a consecutive generation number, and a letter indicating the reactor's designer. The ship types are "A" for aircraft carrier , "C" for cruiser , "D" for destroyer , and "S" for submarine . The designers are "W" for Westinghouse , "G" for General Electric , "C" for Combustion Engineering , and "B" for Bechtel . Examples are S5W, D1G, A4W, and D2W. Information concerning United States naval reactors may or may not be classified (see Naval Nuclear Propulsion Information ). Navy A navy , naval force , military maritime fleet , war navy , or maritime force

670-591: A major naval power in the mid-17th century in the first Anglo-Dutch war with a technical victory. Successive decisive Dutch victories in the second and third Anglo-Dutch Wars confirmed the Dutch mastery of the seas during the Dutch Golden Age , financed by the expansion of the Dutch Empire . The French Navy won some important victories near the end of the 17th century but a focus upon land forces led to

737-682: A military fleet, although the term " merchant navy " for a commercial fleet still incorporates the non-military word sense . This overlap in word senses between commercial and military fleets grew out of the inherently dual-use nature of fleets; centuries ago, nationality was a trait that unified a fleet across both civilian and military uses. Although nationality of commercial vessels has little importance in peacetime trade other than for tax avoidance , it can have greater meaning during wartime, when supply chains become matters of patriotic attack and defense, and when in some cases private vessels are even temporarily converted to military vessels. The latter

SECTION 10

#1732772804242

804-806: A navy is projection of force into areas beyond a country's shores (for example, to protect sea-lanes , deter or confront piracy , ferry troops, or attack other navies, ports, or shore installations). The strategic defensive purpose of a navy is to frustrate seaborne projection-of-force by enemies. The strategic task of a navy also may incorporate nuclear deterrence by use of submarine-launched ballistic missiles . Naval operations can be broadly divided between riverine and littoral applications ( brown-water navy ), open-ocean applications ( blue-water navy ), and something in between ( green-water navy ), although these distinctions are more about strategic scope than tactical or operational division. First attested in English in

871-425: A rate of 30 kgf/cm (2.94 MPa, or approximately 1,084 psi). Each set of four boilers drives two steam turbines , which turn three dynamos . One kilovolt of direct current is then delivered to three double-wound motors directly connected to the propeller , providing an average screw velocity of 120-180 rpm. Five auxiliary steam turbines are tied into the plant to provide electricity, turning generators with

938-813: A safety concern. Soon after World War II , Rickover was assigned to the Bureau of Ships in September 1947 and received training in nuclear power at Oak Ridge, Tennessee . In February 1949 he received an assignment to the Division of Reactor Development , U.S. Atomic Energy Commission and then assumed control of the United States Navy's effort as Director of the Naval Reactors Branch in the Bureau of Ships. This dual role allowed him to lead

1005-458: A single ship or aspect of a ship. However, commodores can also be temporary or honorary positions. For example, during World War II, a Navy captain was assigned duty as a convoy commodore, which meant that he was still a captain, but in charge of all the merchant vessels in the convoy. The most senior rank employed by a navy will tend to vary depending on the size of a navy and whether it is wartime or peacetime, for example, few people have ever held

1072-627: A variety of other roles. Arktika-class icebreaker Ships of the Arktika class are owned by the federal government , but were operated by the Murmansk Shipping Company (MSCO) until 2008, when they were transferred to the fully state-owned corporation Atomflot . Of the ten civilian nuclear-powered vessels built by Russia or the Soviet Union , six were of this type. They are used for escorting merchant ships in

1139-452: Is 5.7 meters (18.7 ft) in diameter and weighs 50 tonnes. Arktika also carries four spare blades along with the appropriate diving equipment and tools so that propeller repairs may be made at sea; the operation can take anywhere from one to four days depending on the extent of the damage. The propellers can deliver a combined bollard pull of 480 tons with 18-43 MW (25,000 shaft horsepower) [totals: 55.3 MW (75,000 shp)]. This amounts to

1206-636: Is active, the other three being laid up. The command ship SSV-33 Ural , based on the Kirov class, is also laid up. Seven civilian nuclear icebreakers remain in service: four of six Arktika -class icebreakers , the two Taymyr -class icebreakers Taymyr and Vaygach , and the LASH carrier and container ship Sevmorput . By 2003 the U.S. Navy had accumulated over 5,400 "reactor years" of accident-free experience, and operated more than 80 nuclear-powered ships. Admiral Hyman G. Rickover , (1900–1986), of

1273-1233: Is an integral part of the navy but there are variations such as the French Troupes de marine , which is actually part of the French Army . The United States Marine Corps is a separate armed service within the United States Department of the Navy, with its own leadership structure. Naval aviation is the application of military air power by navies, whether from warships that embark aircraft, or land bases. In World War I, several navies used floatplanes and flying boats – mainly for scouting . By World War II, aircraft carriers could carry bomber aircraft capable of attacking naval and land targets, as well as fighter aircraft for defence. Since World War II helicopters have been embarked on smaller ships in roles such as anti-submarine warfare and transport. Some navies have also operated land-based aircraft in roles such as maritime patrol and training . Naval aviation forces primarily perform naval roles at sea. However, they are also used in

1340-482: Is currently building one aircraft carrier, INS  Vikrant , and considering another. France is also looking at a new carrier , probably using a CATOBAR system and possibly based on the British Queen Elizabeth design. A navy typically operates from one or more naval bases . The base is a port that is specialized in naval operations, and often includes housing, a munitions depot , docks for

1407-709: Is that boats are capable of being carried by ships. (Submarines by this rule are ships rather than boats, but are customarily referred to as boats reflecting their previous smaller size.) Navies use many types of boat, ranging from 9-foot (2.7 m) dinghies to 135-foot (41 m) landing craft. They are powered by either diesel engines, out-board gasoline engines, or waterjets. Most boats are built of aluminum, fiberglass, or steel. Rigid-hulled inflatable boats are also used. Patrol boats are used for patrols of coastal areas, lakes and large rivers. Landing craft are designed to carry troops, vehicles, or cargo from ship to shore under combat conditions, to unload, to withdraw from

SECTION 20

#1732772804242

1474-429: Is the branch of a nation's armed forces principally designated for naval and amphibious warfare ; namely, lake -borne, riverine , littoral , or ocean -borne combat operations and related functions. It includes anything conducted by surface ships , amphibious ships, submarines , and seaborne aviation , as well as ancillary support, communications, training, and other fields. The strategic offensive role of

1541-656: The Charles de Gaulle , is nuclear-powered. The United Kingdom rejected nuclear power early in the development of its Queen Elizabeth -class aircraft carriers on cost grounds, as even several decades of fuel use costs less than a nuclear reactor. Since 1949 the Bettis Atomic Power Laboratory near Pittsburgh, Pennsylvania has been one of the lead laboratories in the development of the nuclear navy. The planned indigenous Chinese carriers also feature nuclear propulsion. The United States Navy operates

1608-643: The Arctic Ocean north of Siberia as well as for scientific and recreational expeditions to the Arctic . On July 3, 1971, construction began on a conceptual design of a larger nuclear icebreaker, dubbed Arktika , in the Baltic Shipyard in then Leningrad . Four years later, on December 17, 1975, Moscow and Leningrad received radio messages informing them that sea trials had been completed successfully. The newest and largest nuclear icebreaker at

1675-588: The Spanish and Portuguese navies that dominated in the 16th and early 17th centuries, and helped propel the age of exploration and colonialism . The repulsion of the Spanish Armada (1588) by the English fleet revolutionized naval warfare by the success of a guns-only strategy and caused a major overhaul of the Spanish Navy , partly along English lines, which resulted in even greater dominance by

1742-647: The USS Bainbridge , USS California , USS Long Beach , USS Truxtun , USS South Carolina , USS Virginia , USS Texas , USS Mississippi , and USS Arkansas . The Long Beach was deemed too expensive and was decommissioned in 1995 instead of receiving its third nuclear refueling and proposed upgrade. It was sold for scrap in 2012 at Puget Sound Naval Shipyard . Currently the United States does not have any nuclear cruisers . Russia has four Kirov -class battlecruisers , though only one

1809-541: The United States and France possess nuclear-powered aircraft-carriers . The United States Navy has by far the most nuclear-powered aircraft carriers , with ten Nimitz -class carriers and one Gerald R. Ford -class carrier in service. The last conventionally-powered aircraft carrier left the U.S. fleet as of 12 May 2009, when the USS Kitty Hawk was deactivated. France's latest aircraft carrier,

1876-537: The oiler , minesweeper , patrol boat , hydrographic and oceanographic survey ship and tender . During the age of sail , the ship categories were divided into the ship of the line , frigate, and sloop-of-war . Naval ship names are typically prefixed by an abbreviation indicating the national navy in which they serve. For a list of the prefixes used with ship names ( HMS , USS , LÉ , etc.) see ship prefix . Today's warships are significantly faster than in years past, thanks to much improved propulsion systems. Also,

1943-707: The French Navy's relative neglect, which allowed the Royal Navy to emerge with an ever-growing advantage in size and quality, especially in tactics and experience, from 1695. As a response to growing naval influence of the navies of Portuguese, the warrior king of the Marathas, Shivaji laid the foundation of the Maratha navy in 1654. Throughout the 18th century the Royal Navy gradually gained ascendancy over

2010-620: The French Navy, with victories in the War of Spanish Succession (1701–1714), inconclusive battles in the War of Austrian Succession (1740–1748), victories in the Seven Years' War (1754–1763), a partial reversal during the American War of Independence (1775–1783), and consolidation into uncontested supremacy during the 19th century from the Battle of Trafalgar in 1805. These conflicts saw

2077-778: The Spanish. From the beginning of the 17th century the Dutch cannibalized the Portuguese Empire in the East and, with the immense wealth gained, challenged Spanish hegemony at sea. From the 1620s, Dutch raiders seriously troubled Spanish shipping and, after a number of battles that went both ways, the Dutch Navy finally broke the long dominance of the Spanish Navy in the Battle of the Downs (1639). England emerged as

Nuclear navy - Misplaced Pages Continue

2144-537: The U.S. Navy lifted the ban in April 2010. The major reasons historically cited by the U.S. Navy were the extended duty tours and close conditions which afford almost no privacy. The United Kingdom's Royal Navy has had similar restrictions. Australia, Canada, Norway, and Spain previously opened submarine service to women sailors. A navy will typically have two sets of ranks, one for enlisted personnel and one for officers . Typical ranks for commissioned officers include

2211-591: The United Kingdom and France fewer than twenty each and China six. The Indian Navy launched their first indigenous Arihant -class nuclear-powered submarines on 26 July 2009. India is also operating one nuclear attack submarine with talks of leasing one more nuclear submarine from Russia. India plans to build six nuclear attack submarines and follow on to the Arihant class of ballistic missile submarines. The US had several nuclear cruisers. The cruisers were

2278-503: The United Kingdom launched HMS  Dreadnought in 1906, but naval tactics still emphasized the line of battle. The first practical military submarines were developed in the late 19th century and by the end of World War I had proven to be a powerful arm of naval warfare. During World War II , Nazi Germany 's submarine fleet of U-boats almost starved the United Kingdom into submission and inflicted tremendous losses on U.S. coastal shipping . The German battleship  Tirpitz ,

2345-456: The United States Navy, known as "father of the nuclear navy" was an electrical engineer by training, and was the primary architect who implemented this daring concept, and believed that it was the natural next phase for the way military vessels could be propelled and powered. The challenge was to reduce the size of a nuclear reactor to fit on board a ship or submarine , as well as to encase it sufficiently so that radiation hazards would not be

2412-998: The beach, and to return to the ship. They are rugged, with powerful engines, and usually armed. There are many types in today's navies including hovercraft . They will typically have a power-operated bow ramp, a cargo well and after structures that house engine rooms, pilot houses, and stowage compartments. These boats are sometimes carried by larger ships. Special operations craft are high-speed craft used for insertion and extraction of special forces personnel and some may be transportable (and deployed) by air. Boats used in non-combat roles include lifeboats, mail boats, line handling boats, buoy boats, aircraft rescue boats, torpedo retrievers, explosive ordnance disposal craft, utility boats, dive boats, targets, and work boats. Boats are also used for survey work, tending divers, and minesweeping operations. Boats for carrying cargo and personnel are sometimes known as launches, gigs, barges or shore party boats. Naval forces are typically arranged into units based on

2479-450: The coastal periphery and along inland waterways, where larger ocean-going naval vessels can not readily enter. Regional powers may maintain a " green water navy " as a means of localized force projection. Blue water fleets may require specialized vessels, such as minesweepers , when operating in the littoral regions along the coast. A basic tradition is that all ships commissioned in a navy are referred to as ships rather than vessels, with

2546-546: The development and refinement of tactics that came to be called the line of battle . The next stage in the evolution of naval warfare was the introduction of metal plating along the hull sides. The increased mass required steam-powered engines, resulting in an arms race between armor and weapon thickness and firepower. The first armored vessels, the French Gloire and British HMS  Warrior , made wooden vessels obsolete. Another significant improvement came with

2613-797: The early 14th century, the word "navy" came via Old French navie , "fleet of ships", from the Latin navigium , "a vessel, a ship, bark, boat", from navis , "ship". The word "naval" came from Latin navalis , "pertaining to ship"; cf. Greek ναῦς ( naus ), "ship", ναύτης ( nautes ), "seaman, sailor". The earliest attested form of the word is in the Mycenaean Greek compound word 𐀙𐀄𐀈𐀗 , na-u -do-mo (* naudomoi ), "shipbuilders", written in Linear B syllabic script. The word formerly denoted fleets of both commercial and military nature. In modern usage "navy" used alone always denotes

2680-465: The efficiency of the engines has improved, in terms of fuel, and of how many sailors it takes to operate them. In World War II, ships needed to refuel very often. However, today ships can go on very long journeys without refueling. Also, in World War II, the engine room needed about a dozen sailors to work the many engines, however, today, only about four or five are needed (depending on the class of

2747-436: The efforts to develop the world's first nuclear-powered submarine, USS  Nautilus , which was launched in 1954. As Vice Admiral , from 1958, for three decades Rickover exercised tight control over the ships , technology , and personnel of the nuclear navy, even interviewing every prospective officer for new nuclear-powered navy vessels. Leading nuclear physicist Philip Abelson (1913–2004) turned his attention under

Nuclear navy - Misplaced Pages Continue

2814-614: The enemy vessel so its occupants could be attacked hand-to-hand. Naval warfare continued in this vein through the Middle Ages until the cannon became commonplace and capable of being reloaded quickly enough to be reused in the same battle. In ancient China , large naval battles were known since the Qin dynasty ( also see Battle of Red Cliffs , 208), employing the war junk during the Han dynasty . However, China's first official standing navy

2881-459: The entire Arktika -class icebreaker fleet are outfitted with two OK-900A reactors, which deliver 171 MW each. Each reactor is contained in its own closed compartment and weighs 160 tonnes. They are shielded by water, steel, and high density concrete, and ambient radiation is monitored throughout the ship by 86 sensors. The reactors were originally fueled by a 90% enriched, zirconium-clad, uranium fuel. Those reactors still in operation today now use

2948-500: The era of the Roman empire , naval forces included marine legionaries for maritime boarding actions . These were troops primarily trained in land warfare, and did not need to be skilled at handling a ship. Much later during the age of sail, a component of marines served a similar role, being ship-borne soldiers who were used either during boarding actions, as sharp-shooters, or in raids along shorelines. The Spanish Infantería de Marina

3015-417: The exception of destroyers and submarines, which are known as boats. The prefix on a ship's name indicates that it is a commissioned ship. An important tradition on board naval vessels of some nations has been the ship's bell . This was historically used to mark the passage of time, as warning devices in heavy fog, and for alarms and ceremonies. The ship's captain, and more senior officers are "piped" aboard

3082-456: The following, in ascending order ( Commonwealth ranks are listed first on each line; USA ranks are listed second in those instances where they differ from Commonwealth ranks): "Flag officers" include any rank that includes the word "admiral" (or commodore in services other than the US Navy), and are generally in command of a battle group , strike group or similar flotilla of ships, rather than

3149-519: The guidance of Ross Gunn to applying nuclear power to naval propulsion . Their early efforts at Naval Research Laboratory (NRL) provided an early glimpse at what was to become the nuclear Navy. At the present time, many important vessels in the United States Navy are powered by nuclear reactors. All submarines and aircraft carriers are nuclear-powered. Several cruisers were nuclear-powered but these have all been retired. United States naval reactors are given three-character designations consisting of

3216-543: The invention of the rotating turrets, which allowed the guns to be aimed independently of ship movement. The battle between CSS  Virginia and USS  Monitor during the American Civil War (1861–1865) is often cited as the beginning of this age of maritime conflict. The Russian Navy was considered the third strongest in the world on the eve of the Russo-Japanese War , which turned to be

3283-446: The largest fleet of nuclear submarines. Only the United States Navy, the Royal Navy of the United Kingdom, and France's Marine Nationale field an all-nuclear submarine force. By 1989, there were over 400 nuclear-powered submarines operational or being built. Some 250 of these submarines have now been scrapped and some on order cancelled, due to weapons reduction programs. Russia and the United States had over one hundred each, with

3350-458: The number of ships included, a single ship being the smallest operational unit. Ships may be combined into squadrons or flotillas , which may be formed into fleets . The largest unit size may be the whole Navy or Admiralty . A task force can be assembled using ships from different fleets for an operational task. Despite their acceptance in many areas of naval service, female sailors were not permitted to serve on board U.S. submarines until

3417-416: The numerous United States carrier battle groups . Only two nations, the United States and France , presently operate CATOBAR carriers of any size, while Russia , China and India operate sizeable STOBAR carriers (although all three are originally of Russian design). The United Kingdom is also operating two Queen Elizabeth -class carriers, which are the largest STOVL vessels in service, and India

SECTION 50

#1732772804242

3484-432: The prow of the ship. Firing a cannon salute partially disarms the ship, so firing a cannon for no combat reason showed respect and trust. As the tradition evolved, the number of cannons fired became an indication of the rank of the official being saluted. Historically, navy ships were primarily intended for warfare. They were designed to withstand damage and to inflict the same, but only carried munitions and supplies for

3551-418: The radio transmitter, or the flashing light when radio silence was needed. A " blue water navy " is designed to operate far from the coastal waters of its home nation. These are ships capable of maintaining station for long periods of time in deep ocean, and will have a long logistical tail for their support. Many are also nuclear powered to save having to refuel. By contrast a " brown water navy " operates in

3618-645: The rank of Fleet Admiral in the U.S. Navy, the chief of the Royal Australian Navy holds the rank of Vice Admiral, and the chief of the Irish Naval Service holds the rank of Commodore. Naval infantry, commonly known as marines , are a category of infantry that form part of a state's naval forces and perform roles on land and at sea, including amphibious operations , as well as other, naval roles. They also perform other tasks, including land warfare, separate from naval operations. During

3685-715: The seafaring local people (either Malays of Srivijaya or Javanese of Mataram ) to attack as far as the coast of Tanzania and Mozambique with 1000 boats and attempted to take the citadel of Qanbaloh, about 7,000 km to their West, in 945–946 AD. In 1350 AD Majapahit launched its largest military expedition, the invasion of Pasai , with 400 large jong and innumerable smaller vessels. The second largest military expedition, invasion of Singapura in 1398, Majapahit deployed 300 jong with no less than 200,000 men. The average jong used by Majapahit would be about 76.18–79.81 m LOA , carrying 600–700 men, with 1200–1400 tons deadweight . The mass and deck space required to carry

3752-501: The ship using a Boatswain's call . In the United States, the First Navy Jack is a flag that has the words, "Don't Tread on Me" on the flag. By English tradition, ships have been referred to as a "she". However, it was long considered bad luck to permit women to sail on board naval vessels. To do so would invite a terrible storm that would wreck the ship. The only women that were welcomed on board were figureheads mounted on

3819-507: The ship). Today, naval strike groups on longer missions are always followed by a range of support and replenishment ships supplying them with anything from fuel and munitions, to medical treatment and postal services. This allows strike groups and combat ships to remain at sea for several months at a time. The term "boat" refers to small craft limited in their use by size and usually not capable of making lengthy independent voyages at sea. The old navy adage to differentiate between ships and boats

3886-430: The spent fuel reprocessed and waste disposed of at a radioactive waste plant. The OK-900A is a pressurized water reactor , meaning that cooling water is continually pumped under pressure through the reactor to remove heat, keeping the cores and the reactor cool. The heated water is pumped from the reactor to a boiler (four boilers per reactor), where it transfers its heat into another body of water, producing steam at

3953-724: The time was ready for the Arctic. Arktika was the first surface ship to reach the North Pole , on August 17, 1977. As the leading vessel in Russia's second nuclear icebreaker class, Arktika became the classification name for five icebreakers to follow: the Sibir in 1977, Rossiya in 1985, Sovetskiy Soyuz in 1989, the Yamal in 1992 and the 50 Let Pobedy in 2007. The first of new class of nuclear icebreakers, Project 22220 ,

4020-400: The vessels, and various repair facilities. During times of war temporary bases may be constructed in closer proximity to strategic locations, as it is advantageous in terms of patrols and station-keeping. Nations with historically strong naval forces have found it advantageous to obtain basing rights in other countries in areas of strategic interest. Navy ships can operate independently or with

4087-701: The voyage (rather than merchant cargo). Often, other ships that were not built specifically for warfare, such as the galleon or the armed merchant ships in World War II , did carry armaments. In more recent times, navy ships have become more specialized and have included supply ships, troop transports, repair ships, oil tankers and other logistics support ships as well as combat ships. Modern navy combat ships are generally divided into seven main categories: aircraft carriers , cruisers , destroyers , frigates , corvettes , submarines , and amphibious assault ships . There are also support and auxiliary ships, including

SECTION 60

#1732772804242

4154-644: The world's total numbers and total tonnage of naval vessels of 1,000 tons or greater. Throughout the rest of the 20th century, the United States Navy would maintain a tonnage greater than that of the next 17 largest navies combined. During the Cold War , the Soviet Navy became a significant armed force, with large numbers of large, heavily armed ballistic missile submarines and extensive use of heavy, long-ranged antisurface missiles to counter

4221-403: Was arguably the largest naval battle in history ; it was also the last battle in which battleships played a significant role. By the end of World War II , the carrier had become the dominant force of naval warfare. World War II also saw the United States become by far the largest naval power in the world. In the late 20th and early 21st centuries, the United States Navy possessed over 70% of

4288-482: Was especially important, and common, before 20th-century military technology existed, when merely adding artillery and naval infantry to any sailing vessel could render it fully as martial as any military-owned vessel. Such privateering has been rendered obsolete in blue-water strategy since modern missile and aircraft systems grew to leapfrog over artillery and infantry in many respects; but privateering nevertheless remains potentially relevant in littoral warfare of

4355-411: Was formed in 1537, making it the oldest, current marine force in the world. The British Royal Marines combine being both a ship-based force and also being specially trained in commando frogman -style operations and tactics, operating in some cases separately from the rest of the Royal Navy. The Royal Marines also have their own special forces unit . In the majority of countries, the marine force

4422-566: Was launched in 2016. Also called Arktika , it was launched in anticipation of decreasing ice and increased traffic. Over the period December 1967 to May 1970, Lenin , precursor of the Arktika and the first nuclear-propelled icebreaker, had its three OK-150 reactors , capable of 90 MW each, replaced with two OK-900 reactors, capable of 159 MW each. The work was carried out at the Zvezdochka yard in Severodvinsk . Arktika and

4489-609: Was not established until the Southern Song dynasty in the 12th century, a time when gunpowder was a revolutionary new application to warfare. The Chola Dynasty in Southern India had a navy composed of trade ships transporting armies overseas. The Chola Navy reached its peak under Rajendra I , and was most notably used in invasions of Sri Lanka and Southeast Asia . Nusantaran thalassocracies made extensive use of naval power and technologies. This enabled

#241758