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A ship's boat is a utility boat carried by a larger vessel. Ship's boats have always provided communication with the shore and with other ships. Other work done by such boats has varied over time, as marine technology has changed. In the age of sail, especially for warships, an important role was the collection of drinking water. A large enough boat may be needed to carry an anchor to some distance away from the ship, so as to kedge out of a harbour or away from a hazard - and also to recover such an anchor afterwards. Warships have always used their boats as an extension to their military role. This includes the provision of a means of escape for the crews of fireships, the landing of troops, or the "cutting out" raids that were used by the Royal Navy, especially during the Napoleonic Wars. All these requirements competed with the need to be able to stow the boats on board in a way that did not interfere with the normal operation of the ship.
Historically, ship’s boats had different names depending on their role. During the Age of Sail, this included the longboat, captain's gig, jolly boat, and other forms and designations. The terminology was not totally precise and has some variations with time and place. For example, there is reason to believe that the same actual boat could have been issued to one ship as an admiral's barge and then at a later date be used as a captain's pinnace. Similarly the steam pinnaces issued to warships in the decades around 1900 were habitually called "steam picket boats" - so one type of boat had two names.
In modern times, some of the older nomenclature persists, especially in military circles. This reinforces the view that the names refer to the role of a boat, more than to its design and method of construction
Different types of boat were usually carried on an individual ship, to fulfil different roles. The names and designs of boat varied over time, dictated by changing requirements and new design options being available. The commonest of these are:
In the age of sail, a ship carried a variety of boats of various sizes and for different purposes. In the navies they were: (1) the launch, or long-boat, the largest of all rowboats on board, which was of full, flat, and high built; (2) the barge, the next in size, which was employed for carrying commanding officers, with ten or twelve oars (3) the pinnace, which was used for transporting subordinate officers, with six or eight oars (4) the yawl, a smaller pinnace; (5) the cutter, which was shorter and broader than the long-boat and used for the transfer of goods (6) the jolly boat, used for light work; (7) the gig, a long narrow boat, employed for expeditious rowing and fitted with sails, and belonging to the captain.  
A merchant ship usually carried on board: (1) the launch or long-boat; (2) the skiff, the next in size and used for towing or kedging; (3) the jolly boat or yawl, the third in size (4) the quarter-boat, which was longer than the jolly-boat and named thus because it was hung on davits at a ship's quarter; (5) the captain’s gig, which was one of the quarter boats. 
One of the main roles of a ship's boat was to act as a taxi to move stores and people between shore and ship, and between ships.  Although some boats were general purpose in nature, boats such as the Captain's gig and the Admiral's barge were for the exclusive use of officers. It was also the role of a military vessel's boats to act as landing craft, to deliver boarders and cutting-out (night attack) parties. Boats were also sometimes armed with a single bow-mounted, forward-firing, smoothbore cannon to function as small gunboats, boats so equipped would support landing operations and act as picket boats for ships at anchor.
When a ship was becalmed, mastless, run aground or otherwise unable to move, a ship's boat allowed the ship to be kedged or warped ahead. The ship's anchor and cable would be rowed a distance from the ship before being laid, the crew would then man the ship's capstans to haul the ship forward, repeated as many times as needed. Multiple ship’s boats could also be manned to physically tow the ship.
The ship's boats could also be used as lifeboats and rescue boats when needed.
During the age of sail the ship's boats of larger ships of the line would be stowed upon the deck, sometimes nested one atop the other. Boats would be deployed and recovered by davits with some vessels carrying a single small boat suspended astern. In the smallest vessels a ship's boat was also on occasion towed astern. Boats stored on deck in tropical climates were usually partially filled with water to prevent the wooden hull planks drying out and shrinking, which would make the boat leak once it was placed in water until the wood swelled up again.
When a warship was going into action her boats were usually towed astern. This freed space on the deck, reduced the possibility of the boats being damaged by gunfire and prevented the boats becoming a major source of dangerous splinters if they were left on deck. If a ship was spending a long period at anchor (such as during a spell in a home port when the boats would be regularly employed moving people and supplies between ship and shore) it was common to rig a boat boom perpendicular to the hull of the ship. The boats would then be moored to this, ready for use as required. This saved the manpower and time needed to hoist a boat into and out of the water whenever it was needed.
The transition from a sailing navy to one powered by steam removed one ship's boat task and greatly reduced another. Steam ships could distil drinking water from seawater. Warships no longer needed boats that maximised their ability to carry water casks. This meant that the range of sizes of boats could be reduced, as a warship could make do with a slightly smaller boat than the largest she could fit, as it did not compromise their watering ability. The other task that changed was anchor work. Steam power reduced the need for kedging a ship in or out of a harbour. So the ability to carry an anchor and cable, though still an essential part of the seamanship of the steam navy, was much less of a common task.  : 70–71
Navies were slow to use steam power in their ship's boats. The Royal Navy experimented with one in 1848, getting rid of it two years later. The next involvement was in 1864. Six ships were each supplied with a standard launch fitted with a steam engine. In the following years, their numbers were increased and, in 1867, a 36 feet (11 m) steam pinnace was successfully trialled and produced in a range of sizes. Steam cutters were the next to be introduced.  : 105–106
By 1877, steam boats had a clear presence among the range of boats carried by warships. However, they were in an obvious minority, with large numbers of boats propelled by sail and oar continuing to be used through to the First World War. With the outbreak of war, motor boats were introduced to improve efficiency. However, sail and oar remained common through both world wars.  : 88–89, 109
In the Royal Navy, the steam pinnace acquired the role of patrolling the entrances to anchorages to protect them from enemy torpedo boats. This gave them the name picket boat – examples from the 1890s measured 46 feet (14 m) and 50 feet (15 m). They had the capability to carry 14 inches (360 mm) torpedoes in mounts on either side of the hull (a feature introduced about 1875) and some were armed with a three pounder gun and/or a maxim machine-gun.  : 108, 122
Steam boats were substantially heavier than boats powered by sail or oar. Not only was there the weight of the steam engine and boiler, there was also the water for the boiler and coal. A 56 feet (17 m) steam pinnace weighed 18 long tons 0 cwt (40,300 lb or 18.3 t) without her crew or any armament. A 37 feet (11 m) steam pinnace was 6 long tons 2 cwt (13,700 lb or 6.2 t) compared with a 38 feet (12 m) launch (oar and sail) at 3 long tons 18 cwt (8,700 lb or 4 t). Special derricks had to be used to lift these boats, as the davits used for the lighter engineless ones were insufficient.  : 87, 89, 111
Senior officers started to be assigned steam boats from 1882, when a steam cutter was provided for the sole use of the Commander-in-Chief of the East Indies station. Others were rapidly provided for Admirals with comparable commands – the next to be issued being a steam barge. These soon developed into a distinctive type, similar to the steam pinnaces, but with a long overhanging counter, rather than the transom stern of the more ordinary craft. Lengths were 32 feet (9.8 m) or 40 feet (12 m) in the 1890s, with a 45 feet (14 m) version at the beginning of the next century.  : 109
Ships today from large cruise ships to small private yachts continue to carry ship's boats as tenders and lifeboats. Aboard military vessels, ship's boats, often rigid-hulled inflatables, continue to do many of the jobs expected of their Age of Sail predecessor.
A yawl is a type of boat. The term has several meanings. It can apply to the rig, to the hull type or to the use which the vessel is put.
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 usually 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.
Watercraft, also known as water vessels or waterborne vessels, are vehicles used in and on water, including boats, ships, hovercraft, and submarines. Watercraft usually have a propulsive capability and hence are distinct from a simple device that merely floats, such as a log raft.
A longboat is a type of ship's boat that was in use from circa 1500 or before. Though the Royal Navy replaced longboats with launches from 1780, examples can be found in merchant ships after that date. The longboat was usually the largest boat carried. In the early period of use, a ship's longboat was often so large that it could not be carried on board, and was instead towed. For instance, a survey of 1618 of Royal Navy ship's boats listed a 52 ft 4 in longboat used by the First Rate Prince, a ship whose length of keel was 115 ft. This could lead to the longboat being lost in adverse weather. By the middle of the 17th century it became increasingly more common to carry the longboat on board, though not universally. In 1697 some British ships in chase of a French squadron cut adrift the longboats they were towing in an attempt to increase their speed and engage with the enemy.
Steam frigates, the larger steam ships of the line 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 steam-powered versions of the traditional ships of the line, frigates, corvettes, sloops and gunboats.
A cutter is a type of watercraft. The term has several meanings. It can apply to the rig of a sailing vessel, to a governmental enforcement agency vessel, to a type of ship's boat which can be used under sail or oars, or, historically, to a type of fast-sailing vessel introduced in the 18th century, some of which were used as small warships.
The rating system of the Royal Navy and its predecessors was used by the Royal Navy between the beginning of the 17th century and the middle of the 19th century to categorise sailing warships, initially classing them according to their assigned complement of men, and later according to the number of their carriage-mounted guns. The rating system of the Royal Navy formally came to an end in the late 19th century by declaration of the Admiralty. The main cause behind this declaration focused on new types of gun, the introduction of steam propulsion and the use of iron and steel armour which made rating ships by the number of guns obsolete.
This is a glossary of nautical terms; some remain current, while many date from the 17th to 19th centuries. See also Wiktionary's nautical terms, Category:Nautical terms, and Nautical metaphors in English. See the Further reading section for additional words and references.
A gig is a type of boat optimised for speed under oar, but usually also fitted with a sailing rig for appropriate conditions. The type was in use by Deal boatmen in the 18th century. It first occurred as a naval ship's boat after Deal boatbuilders recommended a different design to boats ordered from them by the Royal Navy to equip the cutters purchased in the 1760s to combat smuggling. The captains of larger warships soon sought permission to substitute a gig for one of the heavier boats which were then used; some even had a gig built at their own expense. The gig therefore became part of the usual complement of ship's boats used in warships.
Launch is a name given to several different types of boat. The wide range of usage of the name extends from utilitarian craft through to pleasure boats built to a very high standard.
A hoy is a small sloop-rigged coasting ship or a heavy barge used for freight, usually with a burthen of about 60 tons (bm). The word derives from the Middle Dutch hoey. In 1495, one of the Paston Letters included the phrase, An hoye of Dorderycht, in such a way as to indicate that such contact was then no more than mildly unusual. The English term was first used on the Dutch Heude-ships that entered service with the Royal Navy.
The jolly boat was a type of ship's boat in use during the 18th and 19th centuries. Used mainly to ferry personnel to and from the ship, or for other small-scale activities, it was, by the 18th century, one of several types of ship's boat. The design evolved throughout its period in service.
The action of 4 April 1808 was a naval engagement off the coast off Rota near Cadiz, Spain where Royal Naval frigates Mercury, Alceste and Grasshopper intercepted a large Spanish convoy protected by twenty gunboats and a train of batteries close to shore.
As a ship's boat, the pinnace is a light boat, propelled by oars or sails, carried aboard merchant and war vessels in the Age of Sail to serve as a tender. The pinnace was usually rowed but could be rigged with a sail for use in favorable winds. A pinnace would ferry passengers and mail, communicate between vessels, scout to sound anchorages, convey water and provisions, or carry armed sailors for boarding expeditions. The Spanish favored them as lightweight smuggling vessels while the Dutch used them as raiders. In modern parlance, "pinnace" has come to mean an auxiliary vessel that does not fit under the "launch" or "lifeboat" definitions.
HMS Pelican was an Osprey-class sloop built for the Royal Navy in the mid-1870s. She was launched in 1877 and was sold to the Hudson's Bay Company in 1901. She was scuttled in 1953.
The Montagu whaler was the standard seaboat of the Royal Navy between 1910- 1970, it was a clinker built 27 by 6 feet open boat, which could be pulled by oars or powered by sail – a shorter version of 25 feet (7.6 m) was also built. It was double-ended; having a pointed stem and stern. The design of this naval whaler, was proposed by retired Rear Admiral The Honourable Victor Alexander Montagu in 1890 to replace a variety of smaller craft with one single, versatile craft.
This is a list of nautical terms starting with the letter S.
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, from its beginnings as the "Continental Navy", through the "New Navy" 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.
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