S C H O T T E L N AVIG ATO R - Schottel GmbH

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4 5 APPLICATION ORIENTED PRODUCT VARIANTS All NAV variants can also be supplied with a ducted propeller. Rudderpropellers without nozzles are fitted with an anticavitation plate over the propeller to prevent air intake. NAV ONATRA The simplified version of the SCHOTTEL Navigator, Onatra (see fig. Barge installation), comprises the steering and propulsion system without motorization: a Rudderpropeller fixed to a vertical frame welded to a base frame, with the hydraulic unit, battery box and switch cabinet. The clutch, hydraulic pump, cardan shaft and control panels are supplied separately. The engine bed and canopy are supplied by the shipyard. NAV Sound-insulated incl. SRP hood NAV BASIC The NAV Basic comprises the diesel engine, the exhaust gas system, the engine piping and cabling, and the daily fuel tank embedded in the base frame construction. Furthermore, the NAV Basic is protected by a steel sheet canopy painted to the customer’s specifications. The shipyard only has to provide the connections for fuel to the main tank, for electric connection to the bridge and for cooling water, if required. NAV SOUND-INSULATED The sound-insulated version consists of an enclosed, insulated canopy, thereby reducing the level of air-borne noise to a mere of about 85 dB(A) at a distance of one metre. NAV OFFSHORE For demanding offshore conditions the NAV Offshore is characterized by an enclosed version of the canopy. The frame, canopy and doors are galvanized to prevent corrosion. The upper part of the Rudderpropeller can also be protected by an additional cover. The interior is cooled by an extra ventilation system. NAV RESILIENTLY MOUNTED For special vessel applications reduction of the structureborne noise may be necessary. For such cases SCHOTTEL offers resilient mounting of the NAV and the thrust bearing.
NAV · SCHOTTEL Navigator NAV 170 Sound-insulated Diagonal installation HYDRAULIC GRAB DREDGER 2 x SCHOTTEL Navigator Type NAV 170 (280 kW each) Barge installation with NAV Onatra HYDRAULIC GRAB DREDGER 2 x SCHOTTEL Navigator Type NAV 170 (280 kW each) Hopper barge installation
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S C H O T T E L N AVIG ATO R - Schottel GmbH

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