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RPC12
The RPC12 (''Remorqueurs Portuaires et Côtiers de 12 tonnes de traction au point fixe'', "Harbour and Coastal tugboat, 12-tonne bollard pull") is a type of harbour tugboat operated by the French Navy. They utilise Voith propulsion to develop a 12-tonne bollard pull. Design and description The RPC12 has been classified into three sub-types: the original version, called "Type A" (comprising ''Fréhel'' and ''Saire''), was designed as a dual-purpose tugboat capable of supporting shipping operations both in harbours and off the coast. After the two first units, the design was simplified, while retaining most functionalities, to reduce cost, yielding the "Type B" (comprising ''Armen'', ''La Houssaye'', ''Kéréon'', ''Sicié'' and ''Taunoa''). The nine remaining units constitute the RP12 type, which is further simplified to operate only within harbours (comprising ''Lardier'', ''Giens'', ''Mengam'', ''Balaguier'', ''Taillat'', ''Nividic'', ''Port Cros'', ''Le Four'' and ''Eckmühl'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voith Schneider Propeller
The Voith Schneider Propeller (VSP) is a specialized marine propulsion system (MPS) manufactured by the Voith Group based on a cyclorotor design. It is highly maneuverable, being able to change the direction of its thrust almost instantaneously. It is widely used on tugs and ferries. Operation From a circular plate, rotating around a vertical axis, a circular array of vertical blades (in the shape of hydrofoils) protrude out of the bottom of the ship. Each blade can rotate itself around a vertical axis. The internal gear changes the angle of attack of the blades in sync with the rotation of the plate, so that each blade can provide thrust in any direction. Unlike the azimuth thruster (where a conventional propeller is rotated about the vertical axis to direct its thrust, allowing a vessel to steer without the use of a rudder), the Voith-Schneider drive merely requires changing the pattern of orientation of the vertical blades. In a marine situation, this provides for a d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
