Carbon Fiber Titanium Ring
Welcome to the world Rochet. Rochet are jewelry, watches, and accessories for men (leather goods and fashion accessories) and a 100% range sport action under the brand Rochet Sport. Rochet product lines is both fashionable and trendy. Heir to a long tradition of jewelry making, the brand has achieved worldwide recognition through its constant innovation, its designs and high quality mode. The exposure of the brand is carried by 40 exclusive distributors in the world, nearly 4,000 stores and four distribution subsidiaries in Belgium, Japan, Hong Kong and Spain. With its R & D and creative bubbling with new ideas, Rochet has the means of its ambitions: to present the designs even more exclusive foreshadow tomorrow's fashion, new technical solutions to adapt new materials to the world of jewelry, new inspirations. With total control of the ceramic, tungsten, titanium, fiber and carbon compounds, the brand can be proud to have a comprehensive know-how. Rochet is above all the specialist jewelry and watches for men in alternative materials. By 2000, the brand opens the door of the jewelry . . The hull is the first component of a boat: it forms the float, that is to say the element providing buoyancy and water resistance. A vessel may comprise a single shell (it is called monocoque) or more (multihull): A catamaran has two hulls, a three trimaran, and follow the quadrimarans pentamarans. Rigidity is primarily due to its curved shape, general mechanical property of the hulls. The hull is the outer shell of the ship, it consists of the shell is sealed to the underwater portion (vitals) and usually forms studied so that the boat can move easily in water. The hull is measured by different lengths such as the overall length, length between perpendiculars, the master beam, the hollow, the draft and the freeboard. Describes the shape frégatage, the moves or sheer. Until relatively recently, the shells were exclusively made of wood. With the evolution of science and technology, the hulls are now constructed of materials varied, each more or less adapted to a particular type of construction. This is the historic building material, but also less resistant when used in conventional construction (solid wood). By cons, glulam, its resistance is equivalent or superior to the composite and weighs close. The technique of molded wood is to cross cut layers of wood and / or plywood. The layers are held by staples and glued together with adhesives that do not require plating. We use polyurethane glues or epoxy resins, which are saturating the wood (enter all pores before hardening). Pound for pound, molded wood hulls are more resistant than conventional polyester laminates, and require only very little maintenance (painting every five years). The ferro-cement has earned a bad reputation on the French coast as it was captured by the amateur-built approximate. However, it is used on an industrial scale in the southern hemisphere, on medium to large units (20 meters or more). Often made of polyester resin and a matrix of glass fiber or carbon fiber, the composite material is widely used in the construction of pleasure since the 1970s. It is easy to clean, covered with gelcoat. It is strong and lightweight and folds up well to industrial processes. Sustainability is very average because of the chemical degradation of resins (except epoxy rare because very expensive). The hull is topped by the massive housing the periscope masts and various electronic systems (radar, radio, electronic warfare . . ). At the top of the range is the "bathtub" where the watch when the submarine is on the surface and can also be a platform below equipped with windows for bad weather. Since the First World War, it was realized that the optimum shape to withstand the pressure (spherical) did not suit a good resistance to sea (ship hull surface) or less resistance to the progress (in drop water), and construction methods still limited opportunities. A solution was found as a compromise: an inner shell to withstand pressure, an outer shell for optimal shape, the outer shell is filled with water during the flood. At the time, only parts of the hull and were doubled (see image against), but with the German Type XXI locked for the first time the entire inner shell in the outer shell. After the Second World War, the divergent approaches: the Soviet Union uses the latest developments in German and adopts the double hull for all its underwater vehicles. The submarines of NATO maintain a single hull, with sections of outer shell at the front and rear to house the ballasts. .