STaBiLiSaTiOn and ManOeuVring. Steering gear

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1 Steering gear Rolls-Royce supplies a complete range of steering gear suitable for all ship sizes and types, including VLCCs, large container vessels, offshore and naval applications and built on a 60 year pedigree during which time more than 30,000 units have been delivered. All steering gears are delivered as a complete system, including hydraulic power units, control and alarm systems. We also see more navies and coastguards selecting our COTS steering gear. Rotary vane steering gears are very compact they include integrated rudder carrier bearings (lubricated by the hydraulic system oil) and are typically per cent the weight of some competing designs, with low noise and vibration. Operationally, rotary vane is widely selected as it ensures full torque is available at all rudder angles. It gives more flexibility in the design of the steering system as the steering gear is optimised for the type of rudder it will be used with. Units come in 2, 3 and 4 vane variants with 70, 45 and 35 rudder angles respectively.

2 Sr/SV series The compact and powerful SR/SV series is suitable for small to medium sized ships and is designed with integrated frequency controlled reversible pumps. This ensures smooth starting and stopping and enables a precise control system. Pump motors are mounted directly on the unit, reducing the need for pipework onboard. They are supplied with steering control and rudder angle indicators as a complete system. SR series: kNm SV Series: knm Key features Compact and lightweight Simple installation and maintenance High positioning precision No external moving parts Rudder angles up to 70 FC pumps for low power consumption c c B A B Technical data type Std. Rudder Stock Diameter (mm) Pressure (bar) torque Mechanical Rudder Angle (deg) SR562L x 61 YES SR x 61 YES SR x 71.5 YES SR x 72 YES SR x 72 YES SR x 72 YES SR x 44 YES SV x 72 YES SV x 72 YES SV x 46 YES SV x 46 YES FCP Conventional Dimension AxBxC (mm x mm x mm) Pump motors are mounted on the unit to minimise pipework Weight Approx. (kg) Radial Load (kn) Axial Load (kn) YES 1230 x 390 x YES 1230 x 390 x YES 1210 x 675 x YES 1330 x 765 x YES 1430 x 810 x YES 1610 x 875 x YES 1610 x 875 x YES 1665 x 1050 x YES 1800 x 1155 x YES 1665 x 1050 x YES 1800 x 1155 x All data subject to change without prior notice

3 rv/irv Series The RV series of steering gear is suitable for large and medium sized vessels and is available with 2, 3 and 4 vane options. A dual, submerged pump powerpack simplifies installation as no expansion tank is needed. Modulated flow control gives a soft start and precise control for small rudder movements. The IRV series incorporates a double sealing system, completely separating the actuator into two individual pressure systems. Automatic isolation of the actuator s dual hydraulic system is a feature to meet IMO single failure criteria for large tankers over 100,000dwt. They can be supplied with steering controls, CANBUS alarm system and rudder angle indicators. RV/IRV 2 & 3 vane: kNm RV/IRV 4 vane: kNm Compact size Excellent power-to-weight ratio Simplified maintenance: 4-piece split bearings and seals on base and cover Integrated storage tank and rudder carrier Full overhaul possible without removing the rudder stock connection for steering gear sizes of RV and over 4-Vane : 35 rudder angle Rudder angles Complies with IMO regulations Compact and lightweight Installation with reamer bolts or stoppers Modulated flow for precise rudder movements 2-Vane : up to 70 rudder angle 3-Vane : up to 45 rudder angle An integrated lifting device enables access to all bearings and seals without loosening the rudderstock connection.

4 Technical data type Rudderstock Diameter (mm) Pressure (bar) torque Friction loss in Rudder Carrier Mechanical Rudder Angle (deg) Dimension A x B x C (mm x mm x mm) Weight Approx. (kg) Radial Load (kn) Axial Load (kn) RV x 71.5 RV x 71.5 RV x 46.5 RV x 71.5 RV x 46.5 RV x 36.5 RV x 71.5 RV x 46.5 RV x 36.5 RV x 71.5 RV x 46.5 RV x 71.5 RV x 36.5 RV x 46.5 RV x 71.5 RV x 36.5 RV2050-2* x 71.5 RV x 46.5 RV2600-4* x 36.5 RV2700-2* x 71.5 RV3050-2* x 71.5 RV x 46.5 RV3900-4* x 36.5 RV x 46.5 RV4200-2* x 71.5 RV5500-4* x 36.5 RV6550-4* x 36.5 * Available in IMO execution (tankers over 100,000 DWT) All data subject to change without prior notice 1450 x 890 x x 1025 x x 890 x x 1055 x x 1025 x x 1115 x x 1200 x x 1055 x x 1144 x x 1265 x x 1200 x x 1612 x x 1225 x x 1265 x x 1596 x x 1350 x x 1659 x x 1569 x x 1639 x x 2050 x x 1889 x x 1674 x x 1803 x x 1964 x x 2046 x x 1886 x x 1974 x

5 rotary vane steering gear - for naval applications The Rolls-Royce compact naval rotary vane steering gear range has been designed to meet the highest military standards for noise, shock, vibration and EMI/EMC. A 17 model range delivers steering torques from 19 2,512kNm and has been developed to suit a wide range of naval vessels. The standard working rudder angle is 37 to one side, although gears can be supplied to give maximum working angles of 70 and 90 to one side. They have been selected by a large number of the world's navies, including those of the USA, Canada, Malaysia, India, Australia and the UK Royal Navy. This range seamlessly integrates the wide array of applications deployed in naval fleets. actuator steering gear Actuator type steering gear is popular with a number of navies. Its simple and robust design provides the reliability and redundancy required, as two actuator systems provide single rudder operation. Even with one actuator bypassed, 50 per cent of the torque is still available. Rudders can also be operated independently if necessary. Systems are normally of bespoke design for a specific vessel type. Layout means fewer interface surfaces on board as the actuator anchor brackets can be welded directly onto the hull cartridge. Therefore installation of actuator steering gear is less tolerancecritical for the yard. Routine maintenance is also minimal and replacing an individual actuator is a simple operation. Meets military standards for noise, shock and vibration Select from a 17 model range to match the application Torques from 19 2,512kNm Compact size suitable for installation on single or multiplerudder installations imum working angles of 70 and 90 to one side can be specified Specifically designed for corvettes, frigates and destroyers Select from a 7 model range Torques from 36 to 448kNm Cost-effective and simple installation Minimal maintenance the compact naval rotary vane steering gear. Actuator steering gear is fitted to the uk royal Navy type 45 destroyers.