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Wartsila-O-P-Waterjets-PG - 14 Pages

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Catalogue excerpts

WÄRTSILÄ AXIAL WATERJET SERIES WATERJET RANGE With this guide it is possible to make a first jet size selection and to check weights & dimensions of jets and possible subsystems. There are two main waterjet executions available. The pre-assembled waterjet range and the large jet range have identical performance properties, as indicated on page 5. A pre-assembled and pre-aligned jet delivered with waterjet inlet duct and skid for direct installation in the ship’s hull. For the pre-assembled execution all auxiliary systems, such as hydraulic systems and coolers, are mounted on the assembly and piping...

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Diameter used for type designation Diameter used for type designation INLS system for the US Navy equipped with custom designed jets for thrust in all directions (360° revolving jet nozzle tted) the impeller tip speed is maximum 30 m/s. The lower torque – a direct result of the higher shaft speeds with low tip speeds – can yield both weight and cost savings for couplings in intermediate shaft lines, for shafts in general and gearboxes. UP TO 10% LOWER WEIGHT The reduced transom size not only results in reduced dimensions, but also gives the installation a substantially lower weight. Combined with...

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Machinery controls box with factory settings made ahead of sea-trials Cylinders and thrust bearing inboard resulting in full absence of oil lubricated or oil containing parts outboard of the vessel All piping connected, just one cooling water connection to be made by the shipyard Weld-in skid manufactured in the same material as the hull Unique compact high performance steering & reversing assembly Hull customised inlet duct in Wärtsilä supply for top performance and shipyard risk reduction PRE-ASSEMBLED WATERJET PACKAGES THE WATERJET PUMP For all Wärtsilä waterjets – large units or pre-assembled...

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AXIAL SERIES WATER JETS Weight & di meiisi ois of pre-assem Med SRF waterjet packages WATER J ET SIZE SELECTION The graphs above indicate the jet size required hased on the relation between the engine power and the design speed of the vessel. For instance a ship with four 1250 kW engines and a corresponding vessel speed of 33 knots will need tour 510 size waterjets. A ship with a design speed of 40 knots at 1250 kW power can use 450 size waterjets. The correct jet size is thus indicated by the line above the ii'c-rssction of the cower and the corresponding vessel speed (see examples in graphs...

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LARGE MARGINS Our large axial jets have set a standard In the past years. Introduced In 2006 and selected for many leading large vessel applications, such as the US Navy JHSV and LCS programs, Incat catamarans, and leading superyacht applications. In addition to our axial design a non-axial design Is also available for vessels requiring extremely high speeds above 55 knots up to speeds above 70 knots. The Information on the following pages Is for the large jet range only. Wartsilà pre- assembled packages come fully assembled as one package for direct Installation In the ship Each steering and...

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Forward thrust Reverse thrust Zero thrust Steering Standard power pack arrangement. 7

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Settling time steer2 sec Settling time rev3 sec E-motor power kW Cool cap. hydr kW Cool cap. lubr. kW 21.17 18.91 40.08 8 8 3 5.12 5.35 1000 23.30 25.16 48.46 8 8 3 6.19 5.27 1100 25.60 35.71 61.31 8 8 4 7.83 5.27 1200 28.32 39.16 67.48 10 10 4 8.62 6.95 1300 37.70 42.39 80.09 10 10 5.5 10.23 6.94 1400 40.57 59.59 100.16 10 10 5.5 12.80 6.99 1500 52.39 63.94 116.32 10 10 7.5 14.86 9.08 1620 60.70 72.78 133.48 12 12 7.5 17.06 9.25 1750 65.58 97.08 162.55 12 12 11 20.78 9.51 1880 88.06 104.30 192.36 12 12 11 24.58 14.03 Max. flow total1 l/min Max. steer flow l/min 910 Max. rev flow l/min Jet size...

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Crash stop action of LJ210E jet in a 86 m corvette driven by one 20 MW gas turbine and approx. 11,000 kW Diesel power. Copyright Austal Australia 2009 Incat 112 m fast ferry equipped with four 1500SRi jets each driven by 9000 kW Diesel engine (4 vessels delivered). the draft of the vessel. The result is a very attractive operational profile. The propellers are fully optimized for lower cruising speeds delivering optimum efficiency with low noise and vibrations. At the same time the combination of the waterjet and the propellers still gives access to higher speeds when required. Hybrid systems...

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Q&A AXIAL VS. NON AXIAL WHAT IS THE DIFFERENCE BETWEEN AN AXIAL AND NON-AXIAL WATERJET? The waterjet principle (see also under jet working principle) is based on a pump. Pump types can be grouped from pure axial to radial pumps. A pure axial pump will deliver a high flow at a low pressure. A pure radial pump will generate a low flow at a high pressure. For a high thrust output a waterjet needs to generate both a high flow through the jet system and a high pressure, requiring a jet pump with so called “mixed flow properties”. The unique feature of the Wärtsilä axial flow waterjet is that it has...

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WHAT IS THE STANDARD DIRECTION OF ROTATION FOR A JET? Clockwise when facing forward from aft. A different direction is possible, but is considered a custom design with longer delivery time and higher initial costs. vessel baseline in the transom, reducing vessel JET MAINTENANCE both high and low vessel speeds. CAN YOU DESCRIBE THE MAINTENANCE REQUIRED FOR A WATERJET? We offer standard maintenance packages for every mechanical job on the waterjet. The standard packages contain all parts and consumables required for a particular job. Standard maintenance intervals are every 2.5 years and every 5...

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Several customers have recognizee! JS as their preferred service supplier to ensure the availability and cost-efficient operation of their Installations. They benefit from having their entire power system fully serviced by one global supplier. Wartsila Services provides foil service throughout the product lifecycle for both marine and power plant customers, and Is constantly developing its network worldwide. broadening our range of services by adding valuable products and specialist services to our portfolio. In this way we aiso support erjuipment onboard your vessel or at your Installation and...

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