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Medieval Ships
The ships of Medieval Europe were powered by sail, oar, or both. There was a large variety, mostly based on much older, conservative designs. Although wider and more frequent communications within Europe meant exposure to a variety of improvements, experimental failures were costly and rarely attempted. Ships in the north were influenced by Viking vessels, while those in the south by classical or Roman vessels. However, there was technological change. The different traditions used different construction methods; clinker in the north, carvel in the south. By the end of the period, carvel construction would come to dominate the building of large ships. The period would also see a shift from the steering oar or side rudder to the stern rudder and the development from single-masted to multi-masted ships. As the area is connected by water, people in the Mediterranean built different kinds of ships to accommodate different sea levels and climates. Within the Mediterranean area during the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clinker-built
Clinker built (also known as lapstrake) is a method of boat building where the edges of hull (watercraft), hull planks overlap each other. Where necessary in larger craft, shorter planks can be joined end to end, creating a longer strake or hull plank. The technique originated in Scandinavia, and was successfully used by the Anglo-Saxons, Frisians, Scandinavians, typically in the vessels known as Cog (ship), cogs employed by the Hanseatic League, Hanseatic League. carvel (boat building), Carvel construction, where plank edges are butted smoothly, seam to seam, supplanted clinker construction in large vessels as the demand for capacity surpassed the limits of clinker construction. (See #Comparison between clinker and carvel, Comparison between clinker and carvel below.). Examples of clinker-built boats that are directly descended from those of the early medieval period are seen in the traditional round-bottomed Thames skiffs, and the larger (originally) cargo-carrying Norfolk whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Square Rigged
Square rig is a generic type of sail and rigging arrangement in which the primary driving sails are carried on horizontal spars which are perpendicular, or square, to the keel of the vessel and to the masts. These spars are called ''yards'' and their tips, outside the lifts, are called the ''yardarms.'' A ship mainly rigged so is called a square-rigger. The square rig is aerodynamically the most efficient running rig (i.e., sailing downwind), and stayed popular on ocean-going sailing ships until the end of the Age of Sail. The last commercial sailing ships, windjammers, were usually square-rigged four-masted barques. History The oldest archaeological evidence of use of a square-rig on a vessel is an image on a clay disk from Mesopotamia from 5000 BC. Single sail square rigs were used by the ancient Egyptians, the Phoenicians, the Greeks, the Romans, and the Celts. Later the Scandinavians, the Germanic peoples, and the Slavs adopted the single square-rigged sail, with it be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commercial Revolution
The Commercial Revolution consisted of the creation of a European economy based on trade, which began in the 11th century and lasted until it was succeeded by the Industrial Revolution in the mid-18th century. Beginning with the Crusades, Europeans rediscovered spices, silks, and other commodities rare in Europe. This development created a new desire for trade, and trade expanded in the second half of the Middle Ages (roughly 1000 to 1500 AD). Newly forming European states, through voyages of discovery, were looking for alternative trade routes in the 15th and 16th centuries, which allowed the European powers to build vast, new international trade networks. Nations also sought new sources of wealth and practiced mercantilism and colonialism. The Commercial Revolution is marked by an increase in general commerce, and in the growth of financial services such as banking, insurance and investing. Origins of the Commercial Revolution The term itself was used by Karl Polanyi in his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second Crusade
The Second Crusade (1145–1149) was the second major crusade launched from Europe. The Second Crusade was started in response to the fall of the County of Edessa in 1144 to the forces of Zengi. The county had been founded during the First Crusade (1096–1099) by King Baldwin I of Jerusalem in 1098. While it was the first Crusader state to be founded, it was also the first to fall. The Second Crusade was announced by Pope Eugene III, and was the first of the crusades to be led by European kings, namely Louis VII of France and Conrad III of Germany, with help from a number of other European nobles. The armies of the two kings marched separately across Europe. After crossing Byzantine territory into Anatolia, both armies were separately defeated by the Seljuk Turks. The main Western Christian source, Odo of Deuil, and Syriac Christian sources claim that the Byzantine Emperor Manuel I Komnenos secretly hindered the crusaders' progress, particularly in Anatolia, where he is allege ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freeboard (nautical)
In sailing and boating, a vessel's freeboard is the distance from the waterline to the upper deck level, measured at the lowest point of sheer where water can enter the boat or ship. In commercial vessels, the latter criterion measured relative to the ship's load line, regardless of deck arrangements, is the mandated and regulated meaning. In yachts, a low freeboard is often found on racing boats, for increased speed (by reducing weight and therefore drag). A higher freeboard will give more room in the cabin, but will increase weight and drag, compromising speed. A higher freeboard, such as used on ocean liners, also helps weather waves and so reduce the likelihood of being washed over by full water waves. A low-freeboard vessel is susceptible to taking in water in rough seas. Freighter ships and warships use high freeboard designs to increase internal volume, which also allows them to satisfy International Maritime Organization (IMO) damage stability regulations, due to in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watercraft Rowing
Rowing is the act of propelling a human-powered watercraft using the sweeping motions of oars to displace water and generate reactional propulsion. Rowing is functionally similar to paddling, but rowing requires oars to be mechanically attached to the boat, and the rower drives the oar like a lever, exerting force in the ''same'' direction as the boat's travel; while paddles are completely hand-held and have no attachment to the boat, and are driven like a cantilever, exerting force ''opposite'' to the intended direction of the boat. In some strict terminologies, using oars for propulsion may be termed either "pulling" or "rowing", with different definitions for each. Where these strict terminologies are used, the definitions are reversed depending on the context. On saltwater a "pulling boat" has each person working one oar on one side, alternating port and starboard along the length of the boat; whilst "rowing" means each person operates two oars, one on each side of the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighter (barge)
A lighter is a type of flat-bottomed barge used to transfer goods and passengers to and from moored ships. Lighters were traditionally unpowered and were moved and steered using long oars called "sweeps" and the motive power of water currents. They were operated by skilled workers called lightermen and were a characteristic sight in London's docks until about the 1960s, when technological changes made this form of lightering largely redundant. Unpowered lighters continue to be moved by powered tugs, however, and lighters may also now themselves be powered. The term is also used in the Lighter Aboard Ship (LASH) system. The name itself is of uncertain origin, but is believed to possibly derive from an old Dutch or German word, ''lichten'' (to lighten or unload). In Dutch, the word ''lichter'' is still used for smaller ships that take over goods from larger ships. Lighters, albeit powered ones, were proposed to be used in 2007 at Port Lincoln and Whyalla in South Australia to load ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
São Gabriel (ship)
''São Gabriel'' was the flagship of Vasco da Gama's armada on his first voyage to India in 1497–1499. The other three ships Velho indicated that the sources agreed that the armada contained four ships, but there was disagreement about the names. These were the other three ships according to him: * ''São Rafael'': The sister ship of ''São Gabriel'', built by the same builder at the same time for the same purpose. It was of similar dimensions as ''São Gabriel''. Paulo da Gama, Vasco's brother, was the captain, other people include João de Coimbra, pilot, and João de Sá, clerk. * ''Bérrio'', also known as ''São Miguel'': This caravel was named after its former owner. Only carrying lateen sails, it was the smallest and swiftest of the convoy with a tonnage of 50–90 t. Key people were: Nicolau Coelho, captain, Pedro Escobar pilot, and Álvaro de Braga, clerk. * A supply ship, name ''São Miguel'': The ship was a carrack of about 110 or 200 tons with Gonçalo Nunes as capt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vasco Da Gama
Vasco da Gama, 1st Count of Vidigueira (; ; c. 1460s – 24 December 1524), was a Portuguese explorer and the first European to reach India by sea. His initial voyage to India by way of Cape of Good Hope (1497–1499) was the first to link Europe and Asia by an ocean route, connecting the Atlantic and the Indian oceans. This is widely considered a milestone in world history, as it marked the beginning of a sea-based phase of global multiculturalism. Da Gama's discovery of the sea route to India opened the way for an age of global imperialism and enabled the Portuguese to establish a long-lasting colonial empire along the way from Africa to Asia. The violence and hostage-taking employed by da Gama and those who followed also assigned a brutal reputation to the Portuguese among India's indigenous kingdoms that would set the pattern for western colonialism in the Age of Exploration. Traveling the ocean route allowed the Portuguese to avoid sailing across the highly disputed Medit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa María (ship)
''La Santa María'' (), alternatively ''La Gallega'', was the largest of the three Spanish ships used by Christopher Columbus in his first voyage across the Atlantic Ocean in 1492, the others being the ''Niña'' and the '' Pinta''. Her master and owner was Juan de la Cosa, a man from Santoña, Cantabria, operating in south Spanish waters. Requisitioned by order of Queen Isabella and by contract with Christopher Columbus, whom de la Cosa knew previously, the ''Santa María'' became Columbus's flagship on the voyage as long as it was afloat. Having gone aground on Christmas Day, 1492, on the shores of Haiti, through inexperience of the helmsman, it was partially dismantled to obtain timbers for Fort Navidad, "Christmas Fort," placed in a native Taíno village. The fort was the first Spanish settlement in the New World, which Columbus had claimed for Spain. He thus regarded the wreck as providential. The hull remained where it was, the subject of much modern wreck-hunting with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carrack
A carrack (; ; ; ) is a three- or four- masted ocean-going sailing ship that was developed in the 14th to 15th centuries in Europe, most notably in Portugal. Evolved from the single-masted cog, the carrack was first used for European trade from the Mediterranean to the Baltic and quickly found use with the newly found wealth of the trade between Europe and Africa and then the trans-Atlantic trade with the Americas. In their most advanced forms, they were used by the Portuguese for trade between Europe and Asia starting in the late 15th century, before eventually being superseded in the 17th century by the galleon, introduced in the 16th century. In its most developed form, the carrack was a carvel-built ocean-going ship: large enough to be stable in heavy seas, and capacious enough to carry a large cargo and the provisions needed for very long voyages. The later carracks were square-rigged on the foremast and mainmast and lateen- rigged on the mizzenmast. They had a high roun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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