This glossary defines the various types of ships and accessory watercraft that have been used in service of the United States. Such service is mainly defined as military vessels used in the United States Navy and United States Coast Guard, as well as the defunct, incorporated, or renamed institutions such as the United States Revenue Cutter Service. Service of the United States can also be defined in this context as special government missions in the form of expeditions, such as the Wilkes Expedition or the North Pacific Exploring and Surveying Expedition. The scope of the glossary encompasses both the "Old Navy" of the United States (sail or later steam vessels, with ship type named for the rigging or propulsion method [ex. steamer, cutter, schooner]), from its beginnings as the "Continental Navy", through the "New Navy" (revolutionary steam or fueled vessels, with naming derived from a hull classification scheme) and up to modern day. The watercraft included in the glossary are derived from United States ships with logbooks published by the National Archives and Records Administration.
A type of auxiliary ship specifically designed to store and transport ordinances or ammunition to combat ships. [1]
A merchant or civilian vessel armed for military purposes, like water defense or raiding. [2] May also be generally referred to as a "merchant raider".
See "combat stores ship".
A yacht that was armed with weapons for naval service. Originally applied to small, fast and agile naval vessels, typically privately owned and expropriated or purchased for government use in times of war, most famously in World War II. [3]
A type of warship of the late 19th and early 20th centuries. It was designed to operate as a long-range, independent warship, with exceptional speed and large guns. Has protective metal plating on the decking as well as the sides of the hull. [4]
An amphibious assault vessel that carries troops and their equipment (arms and landing crafts) in an invasion force. [5] See "Troopship".
A more modern (late 19th Century and onwards) name for a Navy armed merchantman, a merchant or civilian vessel armed for military purposes. Armed merchantmen of the World Wars would be classified as auxiliary cruisers as the standard term. [2]
A large portable dry dock vessel that can submerge and raise out of water in order to provide mobile repair under the water line. [6]
A naval vessel, such as a tanker or supply ship, designed to operate in support of combatant ships and other naval operations. [7] May also be referred to in a more specific ship type, such as an "auxiliary steamer".
An auxiliary ship powered by steam propulsion. See "Auxiliary ship".
A sailing vessel with three or more masts, fore-and-aft rigged on only the aftermost / mizzen mast. The other masts are square-rigged. [8] Also spelled "barque", or "barc".
A sailing vessel with three or more masts, square-rigged on the foremast, while fore-and-aft rigged on the remaining masts. Also spelled "barquentine". [9]
An unpropelled vessel used as temporary housing for sailors. [10]
A small tug built to deploy and maintain port security booms surrounding Navy ships and installations in port.
A large, heavily armored and heavily gunned powered warship, [11] relatively slower than other naval craft due to its armaments. [12]
A merchant vessel intended to evade a blockade. Examples in American history can be seen in the Confederate States of America using blockade runners to continue commercial trade abroad and move goods to support the war effort. [13]
A type of bomb vessel, which is a wooden sailing naval ship constructed as a brig (two square-rigged masts). [14] The primary armaments were mortars mounted near the bow and elevated to a high angle, projecting their fire in a ballistic arc. [15]
A sailing vessel characterized by two square-rigged masts. [14]
A two-masted sailing vessel composed of a full square-rigged foremast, and fore-and-aft rigging on the mainmast. [16] Can be further classified by specific setup, like a "hermaphrodite brig". [17]
Earliest form of ironclad warship, with iron armor over the wooden hull and the weapons aligned on the sides of the ship. [18]
See "Lighthouse tender".
A type of barge watercraft, thin and narrow with a shallow draft, suited to canals and other like waterways for transporting cargo and personnel. [19]
A merchant vessel that carries goods and materials between ports. [20] May also be referred to by the more general term, a freighter.
A type of iron-armored gunboat briefly used in the American Civil War. They had a single sloped (casemate) structure on the main deck housing the entire gun battery, effective at deflecting cannon shot. [21]
A mid-nineteenth century merchant vessel which was lightweight and designed for speed. Name derived from the Baltimore Clipper. [22]
A large, flat-bottomed vessel used in calm and interior waterways to transport coal. [23]
A bulk cargo ship used to transport coal. [24]
A vessel used to stow and carry supplies and other goods for naval purposes. [25] Also referred to simply as a "storeship", or an "armed stores ship".
Traditionally the smallest class of vessel considered to be a proper (or “rated”) warship, with guns organized on a single deck. Past the age of sail, corvettes, sloops, and frigates were grouped together under the term "cruiser". [26]
See "Cottonclad warship".
A type of steam-powered warship, used in the American Civil War, in which a wooden ship was protected by a thick lining of cotton bales and was equipped with a ram. The bales also provided breastworks lining the deck for Confederate sailors. [27] Also referred to as a "cottonclad ram".
A type of warship intended for high speed battle capability and cruising distant waters. Can be used to encompass the terms "frigate" and "sloop" in the transition from sail to steam and fuel power. [4]
In the age of sail, a ship with one mast and two headsails, fast and with a shallow draft. The term may also encompass any ship in a cutter institution, like the United States Revenue Cutter Service. [28] Mainly completes coastal guarding, survey, and convoy escort duties. [29] Other classes utilized for long-cruises and light ice-breaking, like the Tallapoosa-class cutter. [30] Also used in 20th Century as turbine-electric-driven sloops, such as those loaned to the United Kingdom during WWII as "Banff-class sloops". [31]
A type of auxiliary ship used for supplying and repairing small naval groups that can also be used as a floating base of operation. [32]
A warship designed to be fast, maneuverable, long-endurance and intended to escort larger vessels. Takes action to defend battleships and similar vessels against short range attackers, or to act as advanced scouts. [33]
A type of ship's tender or auxiliary ship intended to provide maintenance, logistics, and repair for destroyers while moored or anchored. [34]
A boat which carried messages, or mail (dispatches) between high-ranking military officials aboard other ships or to land-based destinations. [35]
A class of energy-intensive military ships, generally converted tankers, with the capability to convert salt water into fresh water. [36]
A ship where the bow and stern are similarly constructed to look the same. [37]
An early form of battleships, popular in the early 1900s and World War One, based on the revolutionary ship HMS Dreadnought. Heavily equipped with at least ten high-caliber twelve-inch guns and steam propulsion systems.
A type of aircraft catapult designed after World War Two to specialize in the launch and recovery of early drone aircraft at sea. [38]
A type of clipper designed to sacrifice cargo for speed, on an already fast ship design. [39]
A merchant vessel used to carry people, vehicles, and goods across a water. [40]
A vessel that carries the commanding officer of a fleet, and thus flies the commanding officer's flag. [41]
A large cargo vessel with dry cargo holds and large fuel tanks used to restock ships in the rest of the fleet while at sea. [42]
A warship that has had been designed for speed and maneuverability, ideal for patrolling, lookout, and escort duties, with fully-armed spar deck. Defined in the sailing era as a three-masted vessel with all square rigs. Modern frigates, usually called cruisers, are a class of medium-speed anti-submarine vessels. [43]
A warship assigned as a stationary guard in a port or harbor, maintaining a higher degree of action readiness. [44] This is as opposed to a coastal patrol boat, which serves its protective role at sea.
A smaller naval warship designed to attack coastal targets, armed with one or more large naval guns. [45] Other classes of gunboats are adapted to patrol interior waterways and to enforce the blockade, like the Unadilla-class gunboat of the American Civil War. [46]
A medium sized warship, protected and armored as a cruiser, with large eight-inch guns or higher. Intended for long range and high speed objectives. [47]
A type of frigate armed with over two-dozen eighteen-pounder cannons. [43]
A ship, designated or converted in emergency situations, to primarily function as a floating medical treatment facility or hospital. They have been used as field hospitals during times of war, or emergency hospitals in times of peace. [48]
A type of auxiliary steamship of many forms (ex: gunboat) designed to plow through icy waters in the Arctic or Antarctic, able to clear the way for other ships for voyages (like research or cargo transport). [49]
A type of ironclad warship that is converted from or takes the specific configuration of a gunboat. [50]
A steam-propelled warship, armed with massive guns, and armored with iron and steel plates over a wooden hull ship or gunboat. Constructed from 1859 to the early 1890s, ironclad warships supplanted the wooden vessels as the most powerful warship on the coast and rivers, seen in the American Civil War with the U.S.S. Monitor and the C.S.S. Virginia. [50] May also be referred to simply as an "ironclad".
A small sailing vessel with two masts (usually fore-and-aft rigged) and a square stern. [51]
An aircraft carrier smaller in capacity than full sized variants, used in World War II to fill a gap fleet allotments for carriers because they could be produced quicker and cheaper. Later converted into antisubmarine carriers and amphibious assault support. [52]
A smaller to medium-sized warship, protected and armored like a cruiser, but with six-inch guns or below. [53]
A smaller type of gunboat, usually lightly-armored, and specialized for rivers due to its low water displacement. Name may vary; draft may be replaced with "draught". [27]
A type of monitor that had a lighter armor for a lighter draft sitting in water, like the Casco-class named after the U.S.S. Casco. [54] Name may vary; draft may be replaced with "draught".
A ship specifically designed to support and maintain lighthouses or lightvessels by providing supplies, fuel, mail, and transportation. Accessory tasks include search and rescue, and law enforcement aid. May also be referred to as "buoy tender". [47]
See "Armed merchantman".
Vessels outfitted with special equipment to detect and clear naval mines. Popular in World War Two for use in coastal areas (for landings) and shipping lanes. [55]
A type of small, heavily armed (single or multiple turrets), and superior armored warship, designed for shallow waters such as coastal areas (similar to the river monitors). The first successful ironclad monitor lent the name of the warship type, the U.S.S. Monitor. [56] Specific monitors like the Passaic-class, named after the U.S.S. Passaic, were larger with thicker hull plating, larger guns, better steering, and an improved pilot house design. [56]
A type of gunboat commissioned during the American Civil War, outfitted with 13-inch mortars and firing platforms to bombard fortifications from the water. [57]
A type of schooner commissioned during the American Civil War, outfitted with 13-inch mortars and firing platforms to bombard fortifications from the water. [57]
Any watercraft powered by a motor, usually referring more specifically to a boat transporting officers. [58]
A fishing trawler converted for naval military purposes, armed and reinforced with steel hulls and armor. Popular during the World Wars as emergency use ships for duties like anti-submarine warfare. [59]
A type of steamship that drives paddle wheels to propel the craft through the water. [60]
Any merchant ship whose primary function is to carry passengers at sea. According to international maritime, a passenger ship carries at least 12 people. [61]
A relatively small naval vessel intended for defensive purposes. Different classes of patrol boats have characteristics for specialized purposes such as coastal defense, border protection, anti-submarine warfare, immigration law-enforcement, ice breaking, and search and rescue duties. [62]
A patrol boat built in the configuration and size of a gunboat.
A small type of naval craft used for harbor patrol and other inshore work, like sentry or warning duties. [63]
A vessel used to transport naval personnel (such as helmsmen) from harbors to another vessel in need of a pilot. [64]
A type of tugboat equipped to transport powder reserves. See U.S.S. Port Fire and U.S.S. Blue Light. [65]
A type of battleship popular before the revolutionary battleship, HMS Dreadnought. Carried guns of varying sizes wherever the guns would fit on the deck, with emphasis on smaller caliber guns for close range combat. [66]
A vessel that has been converted to serve as a detention for excess prisoners, usually prisoners-of-war in times of conflict. [67]
A type of naval cruiser of the late nineteenth century with an armored deck that protects machines from shrapnel. [68]
A type of warship outfitted with a naval ram on the bow, reinforced and possibly metal-plated as the principal weapon of the ship. [69]
A type of hulk used in harbors, usually obsolete or unseaworthy, meant to house newly recruited sailors or transfers before assignment to a ship's crew or station. [70]
See "Spy ship".
A naval auxiliary ship designed to act as a mobile base to provide maintenance support and repairs to warships during times of conflict, and to act as a training station for emergency mechanical situations in times of peace. [71]
A ship specially equipped to carry out sea research and voyages of exploration, usually with fitting and instrumentation customized to the mission at hand. [72]
A cutter specifically used for customs and naval law enforcement purposes, designed for speed as with any cutter. [73]
A type of gunboat specially suited for use in rivers, with a shallow draft (6 feet or less) and up to three rudders for swift currents. [74]
A type of ironclad monitor designed to patrol rivers, heavily armed and with a very shallow draft.
Any naval vessel whose power is derived from sail and wind, provided that any propelling mechanisms (if equipped) are not being used. [75]
A fore and aft-rigged sailing vessel with two or more masts of which the foremast is shorter than the main.
A type of cruiser that is smaller, and thus faster. These ships are for reconnaissance more so than fighting, and are thus more lightly armed and with a better range than protected cruisers or light cruisers. [76]
A version of a corvette ship that is driven by a screw propulsion system, made popular during WWII for being long-range and nearly as fast as a U-boat in the Battle of the Atlantic. [26]
See "Steam frigate".
A gunboat that utilizes a screw-propulsion system. See "Gunboat".
A type of sloop-of-war, driven by a screw-propulsion system, designed with a single gun deck that carried up to eighteen guns and used for combat (for example, the U.S.S. Hartford). [77]
A steamship using a steam engine to power a screw-propulsion system. May be designed with multiple screws, to create a twin-screw steamer and up. [78]
A tugboat that utilizes a screw-propulsion system. See "Tugboat".
Vessel that supports seaplanes, which are aircraft designed to land and take off from water. May also be referred to as a "seaplane carrier", if the tender had repair facilities (which later became the massive aircraft carriers). [79]
See "Light-draft gunboat".
A large warship with square rigging and at least two gundecks. Ship was designed for the naval tactic known as the line of battle. [80]
A small vessel, or alternatively a large vessel operating without the small vessel, that tends to the needs of other ships, providing supplies and transporting personnel. [81] Also simply referred to as a "tender".
A type of paddle steamer that is characterized by paddles on the sides of the vessel. The paddles, driven by a steam engine, may be the main source of power, or assisting a sailing rig. Can sometimes move the paddles at different speeds and in opposite directions, increasing maneuverability. [82]
A smaller sailing warship from the Royal Navy of the United Kingdom holding under 28 guns. A more specific sixth-rate, a post ship, was to be commanded by a post captain, while others were commanded by officers of different pedigree. [83] The U.S.S. Cyane, captured during the War of 1812, was taken as a prize ship and incorporated into United States Naval Service as a Banterer-class, after HMS Banterer. [84]
A sailboat with a single mast, in a fore-and-aft configuration. Easy to maneuver, these ships typically have only one headsail in front of the mast and one mainsail behind the mast. [85]
A type of warship, similar to a frigate, with a single gun deck that carried ten to eighteen guns that excelled at close combat. [86]
A vessel, usually equipped with special surveillance equipment, used on covert duty to observe and assess enemies from the sea. [87]
A vessel assigned to a particular station or geographic region. Duties may include patrolling, troop movement, refueling, repair, etc. intended for upkeep of the station or region. [88]
See "Steamship"
Any vessel that uses steam to power an engine, which in turn operates propellers or paddlewheels. [89] Also commonly referred to as a "steamer".
A steam-powered warship, possibly equipped with a screw propeller that was not designed to stand in the line of battle, but serve accessory roles like flagship duties. [90] May also be referred to as a more specific "screw frigate".
A sloop powered by steam propulsion. See "Sloop" for configuration or "Steam frigate" for near-exact ship.
A tugboat that is powered by steam propulsion. See "Tugboat".
A yacht powered by steam propulsion. See "Armed yacht."
See "Sternwheeler".
A type of paddle steamer that is propelled by a paddle wheel on the stern of the boat (as opposed to a sidewheel steamer). May also be referred to as a sternwheel steamer. [91]
Any ship that was a member of the stone fleet during the American Civil War. The old sunken ships were loaded with stone, and used by the Union Navy to obstruct blockade runners. [92]
See "Combat stores ship".
A vessel that provides logistic support and maintenance for deployed submarines. [93]
A dreadnought battleship that is armed with larger guns (13.5"). [94]
Any ship that takes stores, ammunition, etc. from storeships or ports and distributes the materials among a fleet. [95] Can be more specifically classified as an auxiliary ship, replenishment oiler, etc.
A ship specifically designed for hydrographic survey and mapping, with specialized tools to measure location and data. Typically conducted by federal services like NOAA. [96]
A ship designed to store and transfer liquefied or gaseous goods. [97]
See "Ship's tender".
Converted steamer riverboats with very light armor plating, intended to be quick and have the shallowest draft possible. Protected sailors and ships from riverside snipers. [27] Flagship of the tinclads is considered the U.S.S. Rattler.
A type of river gunboat, similar to an ironclad, but had timber armor instead. Used to transport troops and supplies on the Mississippi River during the Civil War. [98]
A type of schooner with two masts. The foremast has square rigging on the topsails. [99]
A small and fast vessel designed to carry torpedoes, to harass enemy supply lines and sneakily attack advance ships. [100]
A type of ship's tender specifically designed to maintain, repair, and supply deployed torpedo boats. May be equipped with a crane to handle the torpedo boat. [101]
A warship that carries at least one naval officer and a crew of naval apprentices or officers-in-training while going on training cruises. [102]
See "Troopship".
A specific type of transport ship that primarily transports military personnel and equipment. [103] May be further specified to its specific intended purpose, like an "attack transport".
A vessel that moves other ships in mooring and berthing. A tug assists by pushing or pulling ships that cannot move themselves, or are in too difficult a situation to do so alone without an escort. [104] If equipped with steam propulsion, may be referred to specifically as a "steam tug", or any tugboat may be referred to simply as a "tug".
A screw steamship with two screw propulsion systems. See "Screw steamer".
A type of cruiser in use during the pre-dreadnought era (about 1880 to 1905) that lacked the same level of armor plating as protected cruisers, but were also lighter and cheaper to produce. [105]
Any vessel designed to engage in naval warfare, meaning the ship has characteristics to withstand damage, carry sailors and guns, and be faster and more maneuverable than expected of merchant ships. [106]
A large, flat-bottomed vessel used to transport different types of cargo in waterways with a shallow draught, like interior rivers. [107]
Any vessel that was designed or adapted for whaling (from hunting to processing the carcass), ranging in size from schooners to full ships. May be used in times of war for minesweeping or anti-submarine warfare. [108]
A torpedo boat is a relatively small and fast naval ship designed to carry torpedoes into battle. The first designs were steam-powered craft dedicated to ramming enemy ships with explosive spar torpedoes. Later evolutions launched variants of self-propelled Whitehead torpedoes.
An ironclad is 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.
A warship or combatant ship is a ship that is built and primarily intended for naval warfare. Usually they belong to the armed forces of a nation. 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.
A gunboat is a naval watercraft designed for the express purpose of carrying one or more guns to bombard coastal targets, as opposed to those military craft designed for naval warfare, or for ferrying troops or supplies.
In the 18th century and most of the 19th, a sloop-of-war in the Royal Navy was a warship with a single gun deck that carried up to eighteen guns. The rating system covered all vessels with 20 guns and above; thus, the term sloop-of-war encompassed all the unrated combat vessels, including the very small gun-brigs and cutters. In technical terms, even the more specialised bomb vessels and fireships were classed as sloops-of-war, and in practice these were employed in the sloop role when not carrying out their specialised functions.
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. The first such ships were paddle steamers. Later on the invention of screw propulsion enabled construction of screw-powered versions of the traditional frigates, corvettes, sloops and gunboats.
A screw sloop is a propeller-driven sloop-of-war. They were popularized in the mid-19th century, during the introduction of the steam engine and the transition of fleets to this new technology.
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 Merrimack, also improperly Merrimac, was a steam frigate, best known as the hull upon which the ironclad warship CSS Virginia was constructed during the American Civil War. The CSS Virginia then took part in the Battle of Hampton Roads in the first engagement between ironclad warships.
In late 19th-century naval terminology, torpedo gunboats were a form of gunboat armed with torpedoes and designed for hunting and destroying smaller torpedo boats. By the end of the 1890s torpedo gunboats were superseded by their more successful contemporaries, the torpedo boat destroyers.
Demologos was the first warship to be propelled by a steam engine. She was a wooden floating battery built to defend New York Harbor from the Royal Navy during the War of 1812. The vessel was designed to a unique pattern by Robert Fulton, and was renamed Fulton after his death. Because of the prompt end of the war, Demologos never saw action, and no other ship like her was built.
USS Winona was a Unadilla-class gunboat built for service with the Union Navy during the American Civil War. Winona was heavily armed, with large guns for duels at sea, and 24-pounder howitzers for shore bombardment. Winona saw significant action in the Gulf of Mexico and in the waterways of the Mississippi River and was fortunate to return home safely after the war for decommissioning.
USRC Naugatuck was a twin-screw ironclad experimental steamer operated by the U.S. Revenue Cutter Service during the American Civil War. She served the U.S. Treasury Department as the USRC E.A. Stevens, a name she retained until sold in 1890. She was loaned to the Navy by the Treasury Department and thus mistakenly referred to in U.S. Navy dispatches during early 1862 as "USS Naugatuck".
The QF 3-pounder Hotchkiss or in French use Canon Hotchkiss à tir rapide de 47 mm were a family of long-lived light 47 mm naval guns introduced in 1886 to defend against new, small and fast vessels such as torpedo boats and later submarines. There were many variants produced, often under license which ranged in length from 32 to 50 calibers but 40 caliber was the most common version. They were widely used by the navies of a number of nations and often used by both sides in a conflict. They were also used ashore as coastal defense guns and later as an anti-aircraft gun, whether on improvised or specialized HA/LA mounts.
SMS Kronprinz was a unique German ironclad warship built for the Prussian Navy in 1866–1867. Kronprinz was laid down in 1866 at the Samuda Brothers shipyard at Cubitt Town in London. She was launched in May 1867 and commissioned into the Prussian Navy that September. The ship was the fourth ironclad ordered by the Prussian Navy, after Arminius, Prinz Adalbert, and Friedrich Carl, though she entered service before Friedrich Carl. Kronprinz was built as an armored frigate, armed with a main battery of sixteen 21 cm (8.3 in) guns; several smaller guns were added later in her career.
SMS Friedrich Carl was an ironclad warship built for the Prussian Navy in the mid-1860s. The ship was constructed in the French Société Nouvelle des Forges et Chantiers de la Méditerranée shipyard in Toulon; her hull was laid in 1866 and launched in January 1867. The ship was commissioned into the Prussian Navy in October 1867. The ship was the third ironclad ordered by the Prussian Navy, after Arminius and Prinz Adalbert, though the fourth ship to be acquired, Kronprinz, was ordered after but commissioned before Friedrich Carl.
Steam-powered vessels include steamboats and steamships. Smaller steamboats were developed first. They were replaced by larger steamships which were often ocean-going. Steamships required a change in propulsion technology from sail to paddlewheel to screw to steam turbines. The latter innovation changed the design of vessels to one that could move faster through the water. Engine propulsion changed to steam turbine in the early 20th century. In the latter part of the 20th century, these, in turn, were replaced by gas turbines.
Umbria was a protected cruiser of the Italian Regia Marina built in the 1890s. She was the lead ship of the Regioni class, which included five other vessels. All of the ships were named for current or former regions of Italy. The ship was equipped with a main armament of four 15 cm (5.9 in) and six 12 cm (4.7 in) guns, and she could steam at a speed of 18 knots. Umbria spent much of her career abroad, including several years in American waters. In service during a period of relative peace, Umbria never saw combat. In 1911, she was sold to Haiti and renamed Consul Gostrück, though she did not serve for very long under the Haitian flag. Her crew was too inexperienced to operate the ship, and she foundered shortly after being transferred to the Haitian Navy.
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