Steering gear Rotary vane steering gear for smaller vessels

1 Steering gear Rotary vane Steering gear for smaller vessels The SR series is designed with integrated frequency controlled pumps. General description Rolls-Royce supplies a complete range of Steering gear , suitable for selection, alarm panels and rudder angle indicators or just a portion all types and sizes of ships. The products are designed as c omplete of this. The system is also prepared for interface to VDR, ships main Steering systems with the actuator, power pack, Steering control, alarm system, autopilot, joystick and DP when requested. Due to a alarm and rudder angle indicating system in mind, and can wide range of demands, great care has been taken from material therefore be delivered with complete control systems, including selection through construction, in order to meet the strictest q uality control panels with start/stop, non-follow-up and follow-up, mode demands.

2 Key product benefits Typical applications: Compact Available with Steering Work boats Low weight control and rudder angle Fishing vessels Easy installation indicators as one complete Offshore supply vessels Easy maintenance system Chemical/product tankers High positioning accuracy Built-in rudder carrier LPG tankers No external moving parts Polymer sealings internally smaller naval & coastguard vessels and auxiliaries Up to 70 rudder angle for optimal tightness smaller cargo vessels Simple and robust smaller passenger vessels components Yachts 4. The Rolls-Royce series of Rotary vane Steering gears has been smaller machines). The naval series of Rotary vane Steering gear manufactured for more than 60 years, with more than 30 000 is designed to meet the highest standards for noise, shock and machines delivered.

3 The principle of a Rotary vane gives more vibration. For naval applications without Milspec requirements flexibility when choosing the design and types of rudder, thanks the SR & RV ranges offer reliability and maintainability at low cost to the rudder angles of up to 2 x 70 . for a wide range of applications. The Rotary vane principle also ensures a constant torque The SR series of Steering gear throughout the Steering sequence, providing the gear with The SR series is suitable for small to medium-sized vessels . The maximum power output at all rudder angles. This makes Steering gear is designed with integrated frequency controlled navigation through narrow straits or busy shipping channels pumps. The pump utilises a reversible hydraulic pump motor safer, b ecause maximum torque and Steering time can always be together with a frequency converter to reduce the power achieved, resulting in improved manoeuvrability and improved consumption and to change the speed and the direction of the control.

4 U nique technical solutions ensure very low noise and pump. The design gives smooth starting and stopping of the vibration levels. The compact and simple design reduces weight Steering gear , and enables a precise analogue control system. and the number of components, which in turn secures fast and The pump units are mounted directly on the rudder actuator, easy i nstallation of the Steering gear . The actuators are mounted which lessens the need for piping work on board a vessel . directly on the rudder stock, without requiring the use of keys Full frequency control means the pumps and motors are only or keyways, facilitating easier assembly and dismantling of the running when a Steering command is given, this reduces the rudder stock. The rudder torque is transmitted by hydraulic amount of heat generated and leads to a cleaner hydraulic coupling or by hydraulic sleeve coupling/expansion rings (for the system, improving the lifetime of components.)

5 1 2 3 1. Unique technical solutions minimise n oise and vibration levels. 2. The pump units are mounted directly on the rudder actuator. 3. Red indicates pressurised oil. Green indicates return oil. Std. rudder Max. Max. Max. Weight Max. Max. stock working working mechanical approx. radial axial TYPE dia. (mm) pressure (bar) torque (kNm) rudder angle (deg) (kg) load (kN) load (kN). SR562L 120 54 16 2 x 61 400 175 104. SR562 160 133 40 2 x 61 400 175 104. SR622 200 125 70 2 x 71,5 620 400 200. SR642 240 125 110 2 x 72 920 600 250. SR662 280 125 170 2 x 72 1800 700 354. SR722 300 125 275 2 x 72 2750 855 370. SR723 320 125 412 2 x 44 2800 855 370. SR742 340 125 433 2 x 72 3700 1400 480. SR743 360 125 650 2 x 44 3750 1400 480. *All rights reserved. All data subject to change without prior notice.

6 5. Rudders Classic rudders Type CB. for lower speeds A bulbous profile and large vane end plates improve low speed manoeuvrability. It shares the same profile as the FB flap rudder and is typically used for offshore supply, cargo, fishing and seismic vessels . Options: Heel connection module Wire guard Classic rudder The classic rudder series, with no rudder angle limitation and For transit speeds the directional stability of the vessel must optimised profile designs, provides an economical way of be considered, we have developed and use advanced computer improving the manoeuvring capabilities of most vessels . To meet programs to simulate different manoeuvres such as the IMO. each vessels requirements, we offer tailored solutions that can be criteria (zig-zag test), making it possible to evaluate different integrated as a package together with Rolls-Royce Steering gear rudder sizes and types in order to optimise the rudder design for or as an integral part of the PROMAS Propulsion manoeuvring each vessel .

7 System. Furthermore, with few moving parts it is also easy to install and maintain. This ensures your vessel will have optimal reliability, excellent manoeuvrability and low life cycle costs. 12. Type CM. for medium speeds The profile is optimised to provide good manoeuvrability with propulsive efficiency, with a tapered or rectangular blade, meeting the rudder needs of passenger and cargo vessels . Ideal for use on passenger vessels and cargo vessels . Options: Twisted leading edge Wire guard 1 "Rudder Periodic Table" in principle 2. FB rudder Increased manoeuvrability Flap rudder with bulbous profile FM rudder Flap rudder with FS rudder medium profile Flap rudder with slim profile CB rudder 1. Rudder performance comparison, based on same area and aspect Classic rudder with bulbous profile rudders in similar conditions.

8 CM rudder Classic rudder with medium profile CS rudder 2. Rudder designs are optimised in accordance with propeller and hull Classic rudder with slim profile characteristics, in order to meet owner requirements for efficiency and Estimated equal rudder area Increased propulsive efficiency manoeuvrability. 13. Rudders Classic rudders Type CS. for higher speeds The slim profile increases overall propulsive efficiency and reduces cavitation risk. The blade is tapered with rounded corners. It has the same profile as the FS flap rudder. Ideal for use on passenger vessels , cruise ships, cargo carriers and high speed vessels . Options: Twisted leading edge Wire guard Key product benefits Available options: Easy installation Steering gear foundation Hydraulic nut for Steering gear Easy maintenance In-water-survey Water lubricated bearing Custom-built to fit hull Automatic lubrication system Ice class Optimal performance Cathodic corrosion protection Special bearings Suits all Steering gear Custom rudder trunk Stainless steel liners Heel connection module Wire guard 14.

9 Rudders Flap rudders Type FB. for low to medium speeds This rudder has a bulbous profile for maximum manoeuvring performance. The design also has large upper and lower vane plates. It is ideal for use on workboats, fishing vessels , offshore vessels , small tankers, cargo vessels , ferries and other coastal vessels . Options: Heel connection module Wire guard Flap rudders Our flap rudder series provides both excellent low speed As a supplier of both r udders and propellers, Rolls-Royce uses manoeuvring performance and high propulsive efficiency. A Flap experience in cavitation prediction and hydrodynamics, generated rudder produces more sideforce than a classic rudder of equivalent from in-house model testing and in collaboration with leading size. Depending on shipowner requirements, a flap rudder may European test centres, in order to optimise and document the be used to reduce the overall area of a rudder whilst maintaining manoeuvring performance of our rudders at low speeds.

10 The equal lift forces or may be used whenever there is a requirement r udders can also be optimised for higher speeds and the leading for high manoeuvrability. Therefore a good understanding of edge of the rudder can be twisted to improve the efficiency and Shipowner requirements is vital when designing a rudder. cavitation characteristics of the rudder. 15. Rudders Flap rudders Type FM. for medium speeds Designed with a moderate profile for enhanced manoeuvrability and propulsive efficiency. Ideal for use on passenger vessels and cargo vessels . Options: Twisted leading edge Wire guard 1 2. 1. The leading edge of the medium and slim rudders can be twisted to improve efficiency and cavitation performance and to improve the manoeuvring performance of the rudder at low-speeds.