|
Dorade Vent
A dorade box (also called a dorade vent, collector box, cowl vent, or simply a "ventilator") is a type of vent that permits the passage of air in and out of the cabin or engine room of a boat while keeping rain, spray, and sea wash out. Design The basic form is a low, rectangular box fixed to the deck or cabin top, fitted with interleaving vertical baffles. The baffles alternate to be free at the floor of the box, or free at the ceiling, forming a series of chambers. A horn-shaped ventilation cowl is usually fitted facing forward to a large hole at the top of the chamber at one end of the box with another large hole opening down into the boat from the chamber at the other end. Limber holes perforate the wall of the box at the floor of each chamber. Dorade boxes operate on the principle that air can pass relatively freely through the chambers, yet rain or sea wash will be trapped in successive chambers and drain out of the small holes in the sides of the box. The principle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorade Box Diagram
The gilt-head bream (''Sparus aurata''), also known as the gilthead, dourade, gilt-head seabream or silver seabream, is a species of marine ray-finned fish belonging to the family Sparidae, the seabreams or porgies. This fish is found in the Eastern Atlantic and the Mediterranean. It is a highly esteemed food fish and an important species in aquaculture. Taxonomy The gilt-head bream was first formally described in 1758 by Carl Linnaeus in the 10th edition of ''Systema Naturae'' with its type locality given as the Mediterranean and Venezuela (although this has now been shown to be a specimen of ''Calamus''). It is the only species in the monospecific genus ''Sparus''. The genus ''Sparus'' is placed in the family Sparidae within the order Spariformes by the 5th edition of ''Fishes of the World''. Some authorities classify this genus in the subfamily Sparinae, but the 5th edition of ''Fishes of the World'' does not recognise subfamilies within the Sparidae. Etymology The gilt-hea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ventilation (architecture)
Ventilation is the intentional introduction of outdoor air into a space. Ventilation is mainly used to control indoor air quality by diluting and displacing indoor effluents and pollutants. It can also be used to control indoor temperature, humidity, and air motion to benefit thermal comfort, satisfaction with other aspects of the indoor environment, or other objectives. The intentional introduction of outdoor air is usually categorized as either mechanical ventilation, natural ventilation, or mixed-mode ventilation. * Mechanical ventilation is the intentional fan-driven flow of outdoor air into and/or out from a building. Mechanical ventilation systems may include supply fans (which push outdoor air into a building), Exhaust ventilation systems, exhaust fans (which draw air out of a building and thereby cause equal ventilation flow into a building), or a combination of both (called balanced ventilation if it neither pressurizes nor depressurizes the inside air, or only slightly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deck (ship)
A deck is a permanent covering over a Compartment (ship), compartment or a hull (watercraft), hull of a ship. On a boat or ship, the primary or upper deck is the horizontal structure that forms the "roof" of the hull, strengthening it and serving as the primary working surface. Vessels often have more than one level both within the hull and in the superstructure above the primary deck, similar to the floors of a multi-storey building, that are also referred to as decks, as are certain compartments and decks built over specific areas of the superstructure. Decks for some purposes have specific names. Structure The main purpose of the upper or primary deck is structural, and only secondarily to provide weather-tightness and support people and equipment. The deck serves as the lid to the complex box girder which can be identified as the hull. It resists Tension (physics), tension, Compression (physics), compression, and racking forces. The deck's scantling is usually the same as t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cabin (ship)
A cabin or berthing is an enclosed space generally on a ship or an aircraft. A cabin which protrudes above the level of a ship's deck (ship), deck may be referred to as a deckhouse. Sailing ships In sailing ships, the officers and paying passengers would have an individual or shared cabin. The Captain (nautical), captain or commanding officer would occupy the "great cabin" that normally spanned the width of the stern and had large windows. On a warship, it was a privileged area, separate from the rest of the ship, for the exclusive use of the captain. In large warships, the cabin was subdivided into day and night cabins (bedrooms) by movable panels, called ''Bulkhead (partition), bulk-heads'', that could be removed in time of battle to leave the cabin clear for the gunners to use the chase gun, stern chasers several of which were usually stationed in the cabin. On large Three-decker, three decker warships in the age of sail the captain's cabin was sometimes appropriated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cowl (chimney)
A cowl is a usually hood-shaped covering used to increase the draft of a chimney and prevent backflow. The cowl, usually made of galvanized iron, is fitted to the chimney pot to prevent wind blowing the smoke back down into the room below. Undoubtedly named after the resemblance of many designs to the cowl garment worn by monks, they have been in use for centuries. When using an open fire to heat a room the smoke rises through a flue to a chimney pot on the roof. Under normal conditions the warm air from the fire will rise up the chimney emitting the smoke with it and dispersing it at rooftop level where it is less of a nuisance. In strong winds the pressure of the wind may overwhelm the updraft and push the airflow in reverse down the flue. Smoke will then fill the room it is intended to heat posing a health and fire risk, causing discomfort and dirtying furnishings in its path. When raw coal rather than smokeless fuel is burnt, the amount of smoke may be considerable and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limber Hole
A limber hole is a drain hole through a frame or other structural member of a boat designed to prevent water from accumulating against one side of the frame, and allowing it to drain toward the bilge. Limber holes are common in the bilges of wooden boats. The term may be extended to cover drain holes in floors. Limber holes are created in between bulkhead (partition), bulkheads so that one compartment does not fill with water. The limber holes allow water to drain into the lowest part of the bilge so that it can be pumped out by a single bilge pump (or more usually, one electric and one manual pump). The term is also commonly applied to the holes in mid-20th century submarine upperworks, which allow drainage from the superstructure. References * Chapelle, Howard I. (1994, p252). ''Yacht Designing and Planning''. W.W. Norton. . * Brewer, Ted (1994, p139). ''Understanding Boat Design'' (4th ed.). International Marine, a division of McGraw Hill. . Shipbuilding Nautical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olin Stephens
Olin James Stephens II (April 13, 1908 – September 13, 2008) was an American yacht designer. Stephens was born in New York City, but spent his summers with his brother Rod, learning to sail on the New England coast. He also attended the Massachusetts Institute of Technology for a term. Stephens' name had a long history in connection with America's Cup. He assisted W. Starling Burgess with the design of the J-Class '' Ranger'', which won the America's Cup in 1937, defeating the Royal Yacht Squadron's '' Endeavour II'' in four races. He was the original designer of six out of seven successful 12 Metre defenders of the America's Cup between 1958 and 1980, with the exception of ''Weatherly'' in 1962. Other than ''Ranger'', the most remarkable of his defenders was '' Intrepid''. She had a rudder separate from her keel to reduce wetted surface and improve steering. Stephens had previously designed separate rudders on a number of increasingly large ocean racers of the 1960s, mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorade (yacht)
''Dorade'' is a yacht designed in 1929 by Olin Stephens of Sparkman & Stephens and built 1929–1930 by the Minneford Yacht Yard in City Island, New York. With Stephens as skipper, ''Dorade'' went on to place 2nd in the Bermuda Race later that year. The crew for its first race received the All-Amateur Crew Prize. However, it would be a year later, that ''Dorade'' made its name by winning the 1931 Transatlantic Race. She completed a race that takes an estimated 3–4 weeks in just 17 days, earning her crew a parade upon the boat's return and a reception for Olin Stephens hosted by the mayor of New York. While in England that summer, ''Dorade'' also won the Fastnet Race. In 1932, Stephens handed the boat to his brother, Rod Stephens. Led by Rod, ''Dorade'' sailed to victory in the 1932 Bermuda Race. From Bermuda Bermuda is a British Overseas Territories, British Overseas Territory in the Atlantic Ocean, North Atlantic Ocean. The closest land outside the territory is i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shipbuilding
Shipbuilding is the construction of ships and other Watercraft, floating vessels. In modern times, it normally takes place in a specialized facility known as a shipyard. Shipbuilders, also called shipwrights, follow a specialized occupation that traces its roots to before recorded history. Until recently, with the development of complex non-maritime technologies, a ship has often represented the most advanced structure that the society building it could produce. Some key industrial advances were developed to support shipbuilding, for instance the sawing of timbers by Saw#Mechanically powered saws, mechanical saws propelled by windmills in Dutch shipyards during the first half of the 17th century. The design process saw the early adoption of the logarithm (invented in 1615) to generate the curves used to produce the shape of a hull (watercraft), hull, especially when scaling up these curves accurately in the mould Lofting, loft. Shipbuilding and ship repairs, both commercial an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nautical Terminology
Seamanship is the skill, art, competence (human resources), competence, and knowledge of operating a ship, boat or other craft on water. The'' Oxford Dictionary of English, Oxford Dictionary'' states that seamanship is "The skill, techniques, or practice of handling a ship or boat at sea." It involves topics and development of specialised skills, including navigation and international Admiralty law, maritime law and regulatory knowledge; weather, meteorology and forecasting; watchkeeping; ship-handling and small boat handling; operation of deck equipment, anchors and cables; ropework and line handling; communications; sailing; engines; execution of evolutions such as towing; cargo handling equipment, dangerous cargoes and cargo storage; dealing with emergencies; survival at sea and search and rescue; and fire fighting. The degree of knowledge needed within these areas is dependent upon the nature of the work and the type of vessel employed by a sailor, seafarer. History Shi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
