BO W THR USTERS - TWIN DISC

1 BOW THRUSTERSC ompany Profile 2-3 Introduction 4 Electric Thruster: System Selection 4 Main Features 5 System Composition 6-7 Order Guide 8-9 Accessories 10-12 Hydraulic Thruster: System Selection 13 Main Features 14-15 System Composition 16 Order Guide 17 Accessories 18-21 Dimensions and Technical Specifications 22-24 Warranty Conditions and International Distributor Network back cover NOTE: Twin Disc SRL declines any liability for possible mistakes in this catalogue due to printing errors and reserves the right to make any modification that is considered to be necessary or useful for its products. Publishing rights, trade marks, part numbers and photographs present on this catalogue are Twin Disc SRL property or it has the necessary authorization to use them. All rights are reserved and any reproduction, even partial, is concept to production: prototype development, care for design, field testing, product definitionProduction plants in Limite sull Arno2 From concept to production: prototype development, care for design, field testing, product definition3 Throughout our nearly sixty years of experience, BCS has become a leading company in the production and worldwide distribution of high quality marine equipment.

2 The acquisition by Twin Disc, Inc. leader in several different areas such as marine and industrial, heavy duty transmissions and the oil extraction industry has consolidated its position on the market as part of a multinational Disc SRL combines BCS, BCS Service, Twin Disc Technodrive and Twin Disc Propulsion. Twin Disc SRL is also supported by a sister-company, Rolla SP Package Twin Disc SRL offers to boat builders and design engineers a complete package of products, from propulsion systems to gearboxes and transmissions up to control and steering systems, together with customized solutions and efficient technical support. Also global customer service for the development and realization of the whole kinematics dynamic team of engineers, technicians and professional people is devoted to support the customer in any step: from concept of the project to the planning, through prototype development and design definition, up to bench and field testing, production, assembly, installation and service also on Disc SRL works alongside the customer every day.

3 We have established a unique worldwide system dedicated to the marine industry based on our ability to acknowledge and anticipate market requests, the certified reliability of our products, skilled service and the continuous research of technological production plant of Limite sull Arno produces equipment covering several application fields: Hydraulic and electronic steering systems, complete shaft lines for boats up to 40 meters, trim tab systems in stainless steel or aluminum, electric and hydraulic bow and stern thrusters, electrohydraulic gangways and side ladders for large applications, as well as a large variety of stainless steel hydraulic actuators and multi-function electrohydraulic power units. 4To choose the most suitable model, it is important to consider crucial factors such as the boat dimensions and weight, but in particular the total surface exposed to the wind and marine order to help our customers to select the right system, we have created a simple order guide on pages 8-9 for easy and fast is possible to determine the most suitable system using only boat size.

4 However, it is very important to know some general factors that highly influence the thruster performance and can affect the thrust: Total surface exposed to the wind force and the marine currents: the bigger the surface is, the more powerful the thruster Tunnel diameter: the larger the tunnel diameter is, the bigger the potential thrust is, and greater the amount of water moved In applications where a longer working time is requested it is preferable to choose a hydraulic thruster option Tunnel length: the longer tunnel, the higher loss of efficiency; so it should be as short as possible within the limitations indicated on page 17 Any grid placed at the ends of the tunnel may affect the thrustPlease take into consideration these general rules and keep in mind that the suggestions in the Order Guide shall be intended as merely indicative. For any information about the specific application, it is suggested to consult the Twin Disc Technical Department or one of our authorized dealers.

5 ELECTRIC BOW ThRusTERshOW TO ChOOsE ThE RIghT mODELINTRODuCTIONW hether in strong winds or streams, harbors or marinas, mooring or setting sail, Twin Disc bow and stern thrusters become absolutely necessary to ensure the best manueverability and total comfort. Simply push a button or move the joystick on the control panel of the dashboard to maneuver the bow or stern thrusters. Twin Disc thrusters compact design allow them to be installed in limited spaces. Our many years of production and large number of applications are a guarantee of high quality and trouble-free Disc offers a wide variety of bow and stern thrusters, both electric and hydraulic, covering a large range of applications from very small up to 40 ThRusTERhYDRAuLIC ThRusTER5mAIN FEATuREs OF ELECTRIC ThRusTERs Compact, effective design for easy installation, even in restricted areas Bow- and stern-mounting options Reversible electric motor at continuous current Low hydro-dynamic resistance Transmission gears built in high tensile materials Quiet operation Complete range for applications from 6mt to 18mt (20 - 60 ) Wide range of accessories for a complete system Durable materials suitable for the marine environment Conforms to the highest production standardsControl Panels BatteriesBow ThrusterStern ThrusterCOmpLETE FREEDOm OF mOvEmENTAll Twin Disc thrusters (except for the BT-35)

6 Can be installed either in front or at rear of the boat, working as bow or stern stern thruster is simply the standard Twin Disc thruster, which is installed horizontally through the transom by means of a special tunnel. The electric motor can be placed in any position, either vertically or horizontally, with no affect on system Twin Disc bow and stern thrusters have a compact design, allowing an easy installation even in very limited space. The thruster, in its basic version, is composed of the elements listed system can be integrated with a large range of accessories such as control panels, time-lapse devices and connection cables. All available accessories are included on pages start-up relay placed behind the cover has the function to start the electric motor, as well as reverse the rotation direction. The electric motor is reversible at continuous current, available either at 12V or 24V. It is suitable for a continuous running at max. speed. The quality level is very high, according to the best production standards, in order to ensure a bigger efficiency and a longer, trouble-free life.

7 Working times are shown on the motor thruster leg is bronze and is designed to reduce the hydrodynamic resistance for better efficiency. It is also provided with a zinc anode for protection against electrolytic transmission gears inside the leg are comprised of high tensile materials and are treated to provide a long working life, even under heavy-duty thruster leg was also designed to reduce the noise on all models. The transmission gears are protected by elastic couplings, as well as a shear and drive three-blade propeller provides the most system efficiency. The propeller is made of a compound material and is therefore very light and free from corrosion problems, while its design guarantees an equal thrust on both sides. The propeller was designed to avoid any cavitation effect, which would result in a considerable loss of thrust, as well as noise and COmpOsITIONThe motor flange is directly installed on the thruster leg (4) and has the function to support the motor itself and affix to the tunnel.

8 Made of special alloy, the motor flange has a strong structure to ensure the best sYsTEm 6 The small plastic tank (6) contains the hydraulic fluid for the gears lubrication of the leg, which is connected to by means of a flexible hose (7), and has the important function to reduce friction and ensure a longer life and a better efficiency of the thruster. This kit is already included in the standard thruster set and, even if it has been eliminated by several manufacturers, Twin Disc suggests its installation as an additional safety measure. The thruster can actually work even without the lubricating kit, as the leg is already filled with oil. However, when the kit is installed any possible oil leak from the leg seals can be immediately discovered by the lowering of the oil level into the order to ensure a higher safety level, all Twin Disc electric bow thrusters have been provided with a PCS control system. This new device checks temperature levels and, when necessary, regulates switching on-off.

9 In case of a sudden rise in temperature, for example, the PCS device shuts down the thrusters to avoid guIDEM odelDescriptionCodeBT 35N/12 Electric Bow Thruster 35 Kgf at 12 VdcIT25657BT 55N/12 Electric Bow Thruster 55 Kgf at 12 VdcIT25658BT 55N/24 Electric Bow Thruster 55 Kgf at 24 VdcIT25659BT 85N/12 Electric Bow Thruster 85 Kgf at 12 VdcIT25660BT 85N/24 Electric Bow Thruster 85 Kgf at 24 VdcIT25661BT 100N/12 Electric Bow Thruster 100 Kgf at 12 VdcIT25662BT 100N/24 Electric Bow Thruster 100 Kgf at 24 VdcIT25663BT 120N/24 Electric Bow Thruster 120 Kgf at 24 VdcIT25664BT 160N/24 Electric Bow Thruster 160 Kgf at 24 VdcIT25665 PCSP rovided with a PCS control system that guarantees increased safety on 35 NBT 55 NBT 85 NBT 100 NBT 120 NBT 160 NTypical boat size*Open(mt ft)6 - 10 20 -33 9 - 12 30 - 38 11 - 14 36 - 46 13 - 16 43 - 53 15 - 18 49 -59 17 - 19 56 - 63 Fly6 - 9 20 - 30 8 - 11 26 - 36 10 - 13 33 - 43 12 - 15 39 - 49 13 - 16 43 - 53 15 - 18 49 - 59 Sail4,5 - 8 15 - 26 7 - 10 23 - 33 9 - 12 30 - 39 11 - 14 36 - 46 13 - 16 43 - 53 15 - 18 49 - 59 Thrust (Kgf lbs N)35 78 34355 122 54085 188 834100 220 981120 265 1177160 353 1570 Tunnel (mm in)125 4,92 185 7,28 185 7,28 185 7,28 185 7,28 250 9,84 Power (KW Hp)2,2 33 4 5,3 7,1 (12V) 4,8 6,4 (24V) 6 88 10,78 10,7 Voltage (V)1212 2412 2412 242424m6 914185 710 1418 22 N/R N/R46 810 16 20 25 29 1216 24 32N/R N/R N/R N/R N/R N/R N/R 6 8 1215 20 N/R N/R10 20 25 35 40 N/R 610 12 20 25 35 45N/R N/R6 10 20 25 35 45N/RBattery cable.

10 Max length from positive and negative in (m) given the cable section (mm2)mm225 35 50 70 25 35 50 70 25 35 50 70 25 35 50 70 95 120150 17525 35 50 7095 120150 17525 35 50 70 95 120150 175 25 35 50 70 95 120150 175 25 35 50 70 95 120150 17525 35 50 70 95 120150 175 Fuse(A)250250125355 160500355355425 Power consumption(A)273 (12V)350 (12V) 175 (24V) 580 (12V) 280 (24V)600 (12V) 420 (24V)433 (24V)433 (24V)Weight (Kg lb)10,5 23,220 4425 55,126 57,345 9952 114,6*These values shall be intended as indicative. The performances of each thruster depends on several different 35 NBT 55 NBT 85 NBT 100 NBT 120 NBT 160 NTypical boat size*Open(mt ft)6 - 10 20 -33 9 - 12 30 - 38 11 - 14 36 - 46 13 - 16 43 - 53 15 - 18 49 -59 17 - 19 56 - 63 Fly6 - 9 20 - 30 8 - 11 26 - 36 10 - 13 33 - 43 12 - 15 39 - 49 13 - 16 43 - 53 15 - 18 49 - 59 Sail4,5 - 8 15 - 26 7 - 10 23 - 33 9 - 12 30 - 39 11 - 14 36 - 46 13 - 16 43 - 53 15 - 18 49 - 59 Thrust (Kgf lbs N)35 78 34355 122 54085 188 834100 220 981120 265 1177160 353 1570 Tunnel (mm in)125 4,92 185 7,28 185 7,28 185 7,28 185 7,28 250 9,84 Power (KW Hp)2,2 33 4 5,3 7,1 (12V) 4,8 6,4 (24V) 6 88 10,78 10,7 Voltage (V)