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Zabra
A zabra (zah-brə) was a small or midsized sailing vessel used off the coasts of Spain and Portugal to carry goods by sea from the 13th century until the mid-16th century; they were well-armed to defend themselves against pirates and corsairs. Early Iberian documentary sources, such as the '' Estoria de España'', refer to their use by the Moors and from about 1500 onwards a fleet of zabras developed in the coastal trade of Cantabria on the Cantabrian Sea, and fishermen began using them to exploit the fisheries of Ireland and North America. These zabras were fast, square-rigged row-sailers with two masts; they were rowed with 14 to 18 oars and had a tonnage of between 20 and 60 tons. Their ratio of beam to length was 1: 3.75–4.0. The smallest zabras had only a half deck or a poop deck, but the larger ones were covered with a flush deck. Because of their excellent handling qualities, and despite their modest size, they were frequently used by the Crown of Castile for the tran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hayreddin Barbarossa
Hayreddin Barbarossa (, original name: Khiḍr; ), also known as Hayreddin Pasha, Hızır Hayrettin Pasha, and simply Hızır Reis (c. 1466/1483 – 4 July 1546), was an Ottoman corsair and later admiral of the Ottoman Navy. Barbarossa's naval victories secured Ottoman dominance over the Mediterranean during the mid-16th century. Born on Lesbos, Khizr began his naval career as a corsair under his elder brother Oruç Reis. In 1516, the brothers captured Algiers from Spain, with Oruç declaring himself Sultan. Following Oruç's death in 1518, Khizr inherited his brother's nickname, "Barbarossa" ("Redbeard" in Italian). He also received the honorary name ''Hayreddin'' (from Arabic '' Khayr ad-Din'', "goodness of the faith" or "best of the faith"). In 1529, Barbarossa took the Peñón of Algiers from the Spaniards. In 1533, Barbarossa was appointed Kapudan Pasha (grand admiral) of the Ottoman Navy by Suleiman the Magnificent. He led an embassy to France in the same year, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waterline
The waterline is the line where the hull of a ship meets the surface of the water. A waterline can also refer to any line on a ship's hull that is parallel to the water's surface when the ship is afloat in a level trimmed position. Hence, waterlines are a class of "ships lines" used to denote the shape of a hull in naval architecture lines plans. The load line (also known as Plimsoll line) is the waterline which indicates the legal limit to which a ship may be loaded for specific water types and temperatures in order to safely maintain buoyancy. For vessels with displacement hulls, the hull speed is defined by, among other things, the waterline length. In a sailing boat, the waterline length can change significantly as the boat heels, and can dynamically affect the speed of the boat. Aircraft In the aircraft design the term ''waterline'' designates a horizontal reference line used in alignment checks. The base line of the aircraft is designated as waterline 0 (zero). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beam (nautical)
The beam of a ship is its width at its widest point. The maximum beam (BMAX) is the distance between planes passing through the outer sides of the ship, beam of the hull (BH) only includes permanently fixed parts of the hull, and beam at waterline (BWL) is the maximum width where the hull intersects the surface of the water. Generally speaking, the wider the beam of a ship (or boat), the more initial stability it has, at the expense of secondary stability in the event of a capsize, where more energy is required to right the vessel from its inverted position. A ship that heels on her ''beam ends'' has her deck beams nearly vertical. Typical values Typical length-to-beam ratios ( aspect ratios) for small sailboats are from 2:1 (dinghies to trailerable sailboats around ) to 5:1 (racing sailboats over ). Large ships have widely varying beam ratios, some as large as 20:1. Rowing shells designed for flatwater racing may have length to beam ratios as high as 30:1, while a cora ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tumblehome
Tumblehome or tumble home is the narrowing of a Hull (watercraft), hull above the waterline, giving less beam (nautical), beam at the level of the main deck. The opposite of tumblehome is flare (ship), flare. A small amount of tumblehome is normal in many naval architecture designs in order to allow any small projections at deck level to clear Wharf, wharves. In automotive design, tumblehome sides taper inward as they go up. This includes a roof tapering in, and curved window glass. Origins Tumblehome was common in sailing vessels, particularly in the latter part of the 16th century. It allowed for maximizing a vessel's beam and creating a low centre of gravity (by decreasing the amount of structure, and therefore mass, at deck level), both tending to maximize stability. In the era of oared combat ships it was quite common, placing the oar ports as far abeam as possible, allowing maximum possible manpower to be brought to bear. Inward-sloping sides made it more difficult to B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gross Tonnage
Gross tonnage (GT, G.T. or gt) is a nonlinear measure of a ship's overall internal volume. Gross tonnage is different from gross register tonnage. Neither gross tonnage nor gross register tonnage should be confused with measures of mass or weight such as deadweight tonnage or displacement. Gross tonnage, along with net tonnage, was defined by the ''International Convention on Tonnage Measurement of Ships, 1969'', adopted by the International Maritime Organization (IMO) in 1969, and came into force on 18 July 1982. These two measurements replaced gross register tonnage (GRT) and net register tonnage (NRT). Gross tonnage is calculated based on "the moulded volume of all enclosed spaces of the ship" and is used to determine things such as a ship's manning regulations, safety rules, registration fees, and port dues, whereas the older gross register tonnage is a measure of the volume of only certain enclosed spaces. History The International Convention on Tonnage Measurement of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beakhead
A beakhead or beak is the protruding part of the foremost section of a sailing ship. Beakhead is also a term used in Romanesque architecture Beakheads were fitted on sailing vessels from the 16th to the 18th century and served as working platforms for sailors working the sails of the bowsprit, the forward-pointing Mast (sailing), mast that carries the spritsail (square-rigged), spritsails. The beakhead would be one of the most ornate sections of a ship, particularly in the extravagant Baroque-style ships of the 17th century. The sides were often decorated with carved statues and located directly underneath was the figurehead (object), figurehead, usually in the form of animals, shields or mythological creatures. The beakhead also housed the crew's toilets (Head (watercraft), head), which would drop refuse straight into the sea without sullying the ship's hull unnecessarily. References {{Reflist Sailboat components Sailing ship components ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forecastle
The forecastle ( ; contracted as fo'c'sle or fo'c's'le) is the upper deck (ship), deck of a sailing ship forward of the foremast, or, historically, the forward part of a ship with the sailors' living quarters. Related to the latter meaning is the phrase "Wiktionary:before the mast, before the mast" which denotes anything related to ordinary sailors, as opposed to a ship's officers. History and design In medieval shipbuilding, a ship of war was usually equipped with a tall, multi-deck castle-like structure in the bow (ship), bow of the ship. It served as a platform for archers to shoot down on enemy ships, or as a defensive stronghold if the ship were boarded. A similar but usually much larger structure, called the aftcastle, was at the aft end of the ship, often stretching all the way from the main Mast (sailing), mast to the stern. Having such tall upper works on the ship was detrimental to sailing performance. As cannons were introduced and gunfire replaced boarding as th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bay Of Biscay
The Bay of Biscay ( ) is a gulf of the northeast Atlantic Ocean located south of the Celtic Sea. It lies along the western coast of France from Point Penmarc'h to the Spanish border, and along the northern coast of Spain, extending westward to Cape Ortegal. The average depth is and the greatest depth is . Etymology The Bay of Biscay is known in Spain as the Gulf of Biscay (; ). In France, it is called the Gulf of Gascony ( ; ; ; ). In Latin, the bay was known as ( Cantabrian Gulf); the name Cantabrian Sea is still used locally for the southern area of the Bay of Biscay that washes over the northern coast of Spain ( Cantabria). The English name comes from Biscay on the northern Spanish coast, probably standing for the western Basque districts (''Biscay'' up to the early 19th century). Geography Parts of the continental shelf extend far into the bay, resulting in fairly shallow waters in many areas and thus the rough seas for which the region is known. Heavy storms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Logistics
Military logistics is the discipline of planning and carrying out the movement, supply, and maintenance of military forces. In its most comprehensive sense, it is those aspects or military operations that deal with: * Design, development, Military acquisition, acquisition, storage, distribution, maintenance, evacuation, and disposition of materiel. * Transport of personnel. * Acquisition or construction, maintenance, operation and disposition of facilities. * Acquisition or furnishing of services. * Medical and health service support. Etymology and definition The word "logistics" is derived from the Greek adjective meaning "skilled in calculating", and its corresponding Latin word . In turn this comes from the Greek , which refers to the principles of thought and action. Another Latin root, ''log-'', gave rise around 1380 to , meaning to lodge or dwell, and became the French verb , meaning "to lodge". Around 1670, the French King Louis XIV created the position of , an office ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lateen
A lateen (from French ''latine'', meaning "Latin") or latin-rig is a triangular sail set on a long Yard (sailing) , yard mounted at an angle on the mast (sailing) , mast, and running in a fore-and-aft direction. The Settee (sail), settee can be considered to be an associated type of the same overall category of sail. The lateen originated in the Mediterranean as early as the 2nd century AD, during Roman times, and became common there by the 5th century. The wider introduction of lateen rig at this time coincided with a reduction in the use of the Mediterranean square rig of the classical era. Since the performance of these two rigs is broadly similar, it is suggested that the change from one to the other was on cost grounds, since lateen rigs used fewer components and had less cordage to be replaced when it wore out. Arabs , Arab seafarers adopted the lateen rig at a later datethere is some limited archaeological evidence of lateen rig in the Indian Ocean in the 13th century AD ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Square Rig
Square rig is a generic type of sail plan, sail and rigging arrangement in which a sailing ship, sailing vessel's primary driving sails are carried on horizontal spar (sailing), spars that are perpendicular (or wikt:square#Adjective, square) to the median plane of the keel and masts of the vessel. These spars are called and their tips, outside the lifts, are called the . A ship mainly rigged so is called a square-rigger. In "customs and traditions of the Royal Navy, Jackspeak" (Royal Navy slang), it also refers to the uniforms of the Royal Navy, dress uniform of Junior Ratings. History 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 becoming one of the defining characteristics of the classic “Viking” ships.The Viking ship's single square-rigged sail. http://Longshipco.org/sail.html Retrieved 2018-8- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
