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Battle Of Cape Henry
The Battle of Cape Henry was a naval battle in the American War of Independence which took place near the mouth of Chesapeake Bay on 16 March 1781 between a British squadron led by Vice Admiral Mariot Arbuthnot and a French fleet under Admiral Charles René Dominique Sochet, Chevalier Destouches. Destouches, based in Newport, Rhode Island, had sailed for the Chesapeake as part of a joint operation with the Continental Army to oppose the British army of Brigadier General Benedict Arnold that was active in Virginia. Destouches was asked by General George Washington to take his fleet to the Chesapeake to support military operations against Arnold by the Marquis de Lafayette. Sailing on 8 March, he was followed two days later by Admiral Arbuthnot, who sailed from eastern Long Island. Arbuthnot's fleet outsailed that of Destouches, reaching the Virginia Capes just ahead of Destouches on 16 March. After manoeuvring for several hours, the battle was joined, and both fleets su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Revolutionary War
The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence, was a major war of the American Revolution. Widely considered as the war that secured the independence of the United States, fighting began on April 19, 1775, followed by the Lee Resolution on July 2, 1776, and the Declaration of Independence on July 4, 1776. The American Patriots were supported by the Kingdom of France and, to a lesser extent, the Dutch Republic and the Spanish Empire, in a conflict taking place in North America, the Caribbean, and the Atlantic Ocean. Established by royal charter in the 17th and 18th centuries, the American colonies were largely autonomous in domestic affairs and commercially prosperous, trading with Britain and its Caribbean colonies, as well as other European powers via their Caribbean entrepôts. After British victory over the French in the Seven Years' War in 1763, tensions between the motherlan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kingdom Of Great Britain
The Kingdom of Great Britain (officially Great Britain) was a Sovereign state, sovereign country in Western Europe from 1 May 1707 to the end of 31 December 1800. The state was created by the 1706 Treaty of Union and ratified by the Acts of Union 1707, which united the kingdoms of Kingdom of England, England (which included Wales) and Kingdom of Scotland, Scotland to form a single kingdom encompassing the whole island of Great Britain and its outlying islands, with the exception of the Isle of Man and the Channel Islands. The unitary state was governed by a single Parliament of Great Britain, parliament at the Palace of Westminster, but distinct legal systems – English law and Scots law – remained in use. The formerly separate kingdoms had been in personal union since the 1603 "Union of the Crowns" when James VI of Scotland became King of England and King of Ireland. Since James's reign, who had been the first to refer to himself as "king of Great Britain", a political un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jibe (sailing)
A jibe (US) or gybe (Britain) is a sailing maneuver whereby a sailing vessel reaching downwind turns its stern through the wind, which then exerts its force from the opposite side of the vessel. Because the mainsail boom can swing across the cockpit quickly, jibes are potentially dangerous to person and rigging compared to tacking. Therefore accidental jibes are to be avoided while the proper technique must be applied so as to control the maneuver. For square-rigged ships, this maneuver is called wearing ship. In this maneuver, the mainsail will cross the center of the boat while the jib is pulled to the other side of the boat. If a spinnaker is up, its pole will have to be manually moved to the other side, to remain opposite the mainsail. In a dinghy, raising the centerboard can increase the risk of capsizing during what can be a somewhat violent maneuver, although the opposite is true of a dinghy with a flat, planing hull profile: raising the centerboard reduces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Point Of Sail
A point of sail is a sailing craft's direction of travel under sail in relation to the true wind direction over the surface. The principal points of sail roughly correspond to 45° segments of a circle, starting with 0° directly into the wind. For many sailing craft 45° on either side of the wind is a ''no-go'' zone, where a sail is unable to mobilize power from the wind. Sailing on a course as close to the wind as possible—approximately 45°—is termed ''beating'', a point of sail when the sails are ''close-hauled''. At 90° off the wind, a craft is on a ''beam reach''. The point of sail between beating and a beam reach is called a ''close reach''. At 135° off the wind, a craft is on a ''broad reach''. At 180° off the wind (sailing in the same direction as the wind), a craft is ''running downwind''. A given point of sail (beating, close reach, beam reach, broad reach, and running downwind) is defined in reference to the true wind—the wind felt by a stationary observe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weather Gage
The weather gage (sometimes spelled weather gauge) is the advantageous position of a fighting sailing vessel relative to another. It is also known as "nautical gauge" as it is related to the sea shore. The concept is from the Age of Sail and is now antique. A ship at sea is said to possess the weather gage if it is in any position upwind of the other vessel. Proximity with the land, tidal and stream effects and wind variability due to geography (hills, cliffs, etc.) may also come into play. An upwind vessel is able to manoeuvre at will toward any downwind point, since the relative wind then moves aft. A vessel downwind of another, in attempting to attack upwind, is constrained to trim sail as the relative wind moves forward and cannot point too far into the wind for fear of being headed. In sailing warfare, when beating to windward, the vessel experiences heeling under the sideward pressure of the wind. This restricts gunnery, as cannon on the windward side are elevated, while ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Ship Duc De Bourgogne (1752)
The ''Duc de Bourgogne'' was an 80-gun ship of the line of the French Navy. Career She was refitted twice, in 1761 and 1779, when she received a copper sheathing. On 2 May 1780, she departed Brest as the flagship of the 7-ship and 3-frigate Expédition Particulière under Admiral Ternay, escorting 36 transports carrying troops to support the Continental Army in the War of American Independence. The squadron comprised the 80-gun ''Duc de Bourgogne'', under Ternay d'Arsac (admiral) and Médine (flag captain); the 74-gun ''Neptune'', under Sochet Des Touches, and ''Conquérant'', under La Grandière; and the 64-gun ''Provence'' under Lombard, ''Ardent'' under Bernard de Marigny, ''Jason'' under La Clocheterie and ''Éveillé'' under Le Gardeur de Tilly, and the frigates ''Surveillante'' under Villeneuve Cillart, ''Amazone'' under La Pérouse, and ''Bellone''. ''Amazone'', which constituted the vanguard of the fleet, arrived at Boston on 11 June 1780. She ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drag (physics)
In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid. This can exist between two fluid layers (or surfaces) or between a fluid and a solid surface. Unlike other resistive forces, such as dry friction, which are nearly independent of velocity, the drag force depends on velocity. Drag force is proportional to the velocity for low-speed flow and the squared velocity for high speed flow, where the distinction between low and high speed is measured by the Reynolds number. Even though the ultimate cause of drag is viscous friction, turbulent drag is independent of viscosity. Drag forces always tend to decrease fluid velocity relative to the solid object in the fluid's path. Examples Examples of drag include the component of the net aerodynamic or hydrodynamic force acting opposite to the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fouling
Fouling is the accumulation of unwanted material on solid surfaces. The fouling materials can consist of either living organisms ( biofouling) or a non-living substance (inorganic or organic). Fouling is usually distinguished from other surface-growth phenomena in that it occurs on a surface of a component, system, or plant performing a defined and useful function and that the fouling process impedes or interferes with this function. Other terms used in the literature to describe fouling include deposit formation, encrustation, crudding, deposition, scaling, scale formation, slagging, and sludge formation. The last six terms have a more narrow meaning than fouling within the scope of the fouling science and technology, and they also have meanings outside of this scope; therefore, they should be used with caution. Fouling phenomena are common and diverse, ranging from fouling of ship hulls, natural surfaces in the marine environment ( marine fouling), fouling of heat-transf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper Sheathing
Copper sheathing is the practice of protecting the under-water hull of a ship or boat from the corrosive effects of salt water and biofouling through the use of copper plates affixed to the outside of the hull. It was pioneered and developed by the Royal Navy during the 18th century. In antiquity, ancient Greeks used lead plates to protect the underwater hull. Development Deterioration of the hull of a wooden ship was a significant problem during the Age of Sail. Ships' hulls were under continuous attack by shipworm, barnacles and various marine weeds, all of which had some adverse effect on the ship, be it structurally, in the case of the worm, or affecting speed and handling in the case of the weeds. The most common methods of dealing with these problems were through the use of wood, and sometimes lead, sheathing. Expendable wood sheathing effectively provided a non-structural skin to the hull for the worm to attack, and could be easily replaced in dry dock at regular inter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vice-admiral Of The White
The Vice-Admiral of the White was a senior rank of the Royal Navy of the United Kingdom, immediately outranked by the rank Vice-Admiral of the Red (see order of precedence below). Royal Navy officers holding the ranks of commodore, rear admiral, vice admiral and admiral of the fleet are sometimes considered generically to be ''admirals''. From 1688 to 1805, this rank was fifth in order of precedence; after 1805, it was the sixth. In 1864, it was abolished as a promotional rank (pictured opposite is the command flag for a Vice-Admiral of the White). History The Navy Royal inaugurated squadron colours during the reign of Elizabeth I (1558-1603) to subdivide the English fleet into three squadrons. There were three classes of admirals and differentiated by using coloured flags. In 1620 the official flag ranks of admiral, vice admiral, and rear admiral were legally established that arose directly out of the organisation of the fleet into three parts. Admiral of the Fleet as an off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elizabeth River (Virginia)
The Elizabeth River is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map , accessed April 1, 2011 tidal estuary forming an arm of Hampton Roads harbor at the southern end of Chesapeake Bay in southeast Virginia in the United States. It is located along the southern side of the mouth of the James River, between the cities of Portsmouth, Norfolk, and Chesapeake. Forming the core of the Hampton Roads harbor, it is heavily supported by its tributaries which depend upon it. Through its Southern Branch and the Albemarle and Chesapeake Canal, the Elizabeth River also is a gateway to points to the south for the Atlantic Intracoastal Waterway, an inland path from the ocean providing a more sheltered navigable waterway to Florida for commercial and recreational boating. History The Elizabeth River was named by the Jamestown colonists in the early 17th century for Princess Elizabeth Stuart, She was the daughter of King James I of Englan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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