SEP60 PRO™ tunnel bow/stern thruster 24V - Sleipner Group Leisure boat Leisure boat Professional boat Professional boat Support English Back Choose language Norway Sweden Denmark UK Germany Finland Italy Login Thruster Bow- and stern thruster Tunnel thrusters External thrusters Retract thrusters Control units Remote control Control panel Thruster upgrades Upgrade to E-series Intelligent Power Control Q-Prop™ Variable Speed Control Joystick integrations Installation parts Tunnels for bow installation Tunnels for stern installation Isolation kits Electrical accessories Components Power Cables Signal Cables External installation Retract Parts Tools Spare parts Download Side-Power spare parts list Actuators Anodes Brushes and springs Drive pins and shear pins Electrical components Fastening components Gearlegs and brackets Hydraulic components Motors Propellers Sealing components Flexible couplings Other Stabilizer Vector Fins™ Actuators Control panels Power packs Accessories Spare parts Steering Rudder arms Power steering Helm pumps Cylinders Installation Spare parts Anchor windlass Windlasses Control panels Remote controls Anchor lines Anchors Installation Signal cables Thru-hull fittings Accessories Electrical Anchor rollers Spare parts See more Thruster Bow- and stern thruster Tunnel thrusters External thrusters Retract thrusters Control units Remote control Control panel Thruster upgrades Upgrade to E-series Intelligent Power Control Q-Prop™ Variable Speed Control Joystick integrations Installation parts Tunnels for bow installation Tunnels for stern installation Isolation kits Electrical accessories Components Power Cables Signal Cables External installation Retract Parts Tools Spare parts Download Side-Power spare parts list Actuators Anodes Brushes and springs Drive pins and shear pins Electrical components Fastening components Gearlegs and brackets Hydraulic components Motors Propellers Sealing components Flexible couplings Other Stabilizer Vector Fins™ Actuators Control panels Power packs Accessories Spare parts Steering Rudder arms Power steering Helm pumps Cylinders Installation Spare parts Anchor windlass Windlasses Control panels Remote controls Anchor lines Anchors Installation Signal cables Thru-hull fittings Accessories Electrical Anchor rollers Spare parts Thruster system Thrusters Tunnel thrusters Retract thrusters Control units Control panels Remote controls Installation parts Tunnels for bow installation Tunnels for stern installation Isolation kits Electrical accessories Signal cables Power cables Components Accessories for external Accessories for retract Tools Thruster upgrades Intelligent Power Control Q-Prop™ Variable Speed Control Joystick integrations Spare parts Actuators Anodes Brushes and springs Drive pins and shear pins Electrical components Fastening components Gearlegs and brackets Hydraulic components Motors Propellers Sealing components Flexible couplings Other Stabilizer system Vector Fins™ Actuators Control panels Power packs Accessories Spare parts Steering system Power steering Helm pumps Cylinders Installation Spare parts See more Thruster system Thrusters Tunnel thrusters Retract thrusters Control units Control panels Remote controls Installation parts Tunnels for bow installation Tunnels for stern installation Isolation kits Electrical accessories Signal cables Power cables Components Accessories for external Accessories for retract Tools Thruster upgrades Intelligent Power Control Q-Prop™ Variable Speed Control Joystick integrations Spare parts Actuators Anodes Brushes and springs Drive pins and shear pins Electrical components Fastening components Gearlegs and brackets Hydraulic components Motors Propellers Sealing components Flexible couplings Other Stabilizer system Vector Fins™ Actuators Control panels Power packs Accessories Spare parts Steering system Power steering Helm pumps Cylinders Installation Spare parts Find a dealer Products Ask a dealer   Back Leisure boat 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See all   Power steering Helm pumps Cylinders Installation Spare parts Support English Back Choose language Norway Sweden Denmark UK Germany Finland Italy Login Support Find a dealer Support English Back Choose language Norway Sweden Denmark UK Germany Finland Italy Login Home Thruster systems Thrusters SEP60 PRO™ tunnel bow/stern thruster 24V Thrusters SEP60 PRO™ tunnel bow/stern thruster 24V 60kg variable thrust, S-LINK™ S-Link™ is a CAN-based control system used for communication between Sleipner products installed on a vessel. Compact and waterproof plugs Keyed and color-coded connectors to ensure correct and easy installation Different cable lengths, extenders and T-connectors makes the system scalable and flexible to install Q-PROP™ The Q-PROP™ has measured noise reductions of up to 75% in controlled environments. The five-bladed skew propeller reduces noise levels while maintaining exceptional efficiency. Some thruster models even see an increase in thrust power.  The expected noise reduction in average installations: 20-40% Upgrade kits are available for most Sleipner thruster models with special adaptors PRO™ A PRO™ thruster system enables you to apply only the necessary power to complete your maneuver. The variable speed control eliminates the noise associated with standard on/off thrusters. The system also includes a practical hold-function. In a dual system (bow and stern) a single press of a button will keep you alongside the docks - making docking truly a one-person job.  Speed controlled thrusters are the best choice for joystick interaction.​ INTELLIGENT POWER CONTROL Sleipner's patented intelligent power control provides a minimal delay between drive directions to reduce wear of the mechanical parts while monitoring solenoid functions. In the case of a solenoid lock-in, the thruster will automatically stop without extra user action or controlling the main switch. HOLD-FUNCTION Docking your vessel has never been easier. With a single press of a button, you can rely on your thrusters to maintain the boat controlled against the dock while stepping off to secure the lines — making docking truly a one-person job. OVERHEAT PROTECTION When high temperatures are detected, On/off thrusters are automatically shut off to prevent overheating. PRO™ thrusters with speed control provide extended run-time by derating power to maintain temperature within safe levels.  SAFE START-UP This control panel use dual ‘on’ buttons to prevent accidental activation for a child-safe environment. FLEXIBLE INSTALLATION Sleipner offers installation flexibility to work with the space you have. Our thruster models allow installation at any angle on the tunnel, tailored to fit any space available in your vessel.  GALVANIC SEPARATION Immersed parts exposed to seawater are galvanic isolated from the onboard electrical system, eliminating stray currents. SEALED DRIVE LUBRICATION The thruster gearleg is pre-filled for lifetime lubrication and sealed using a long-time mechanical seal with ceramic and carbon surfaces for ultimate security against water intrusion.   SINGLE PROPELLER A properly engineered single propeller will be the most energy efficient thruster. Its compact design fits easily into narrow bows making it the perfect match for our smaller thruster range. Item code: SEP60/185S2-24V SEP60 PRO™ with variable speed control is one of Sleipner's most popular models with 60-73 kg thrust. Suitable for boats between 29-38 feet. Can be mounted in the bow and stern.  The thruster offers great installation flexibility as it can be mounted at any angle on the tunnel. Additionally, the electric motor can be rotated 90 degrees on the motor bracket.  It is galvanically isolated and features Sleipner's patented IPC technology for intelligent power control and safety. See more of the product features below.  Read more 26-36 ft. 26-36 ft. - + Add product Overview Product features Technical information Documents Spare parts Compatible products FAQ Sleipner's tunnel thrusters are the world's top-selling thrusters resulting from over 35 years of development. Over the years, our tunnel thrusters have been installed in over 350,000 boats worldwide.   Bow and stern thruster They are fitted either in a tunnel through the boat's bow or into a stern tunnel at the boat's stern. Available as standard version (on/off), PRO™ version (variable speed control), and IP PRO™ version (with ignition protection and variable speed control), extending from 20 kg to 300 kg of thrust.  Sleipner's stern tunnels are designed with solid and durable fiberglass to enhance the thruster's performance and are installed effortlessly in the boat's transom. Additional cowls (sold separately) allow installation in boats with shallow drafts or obstructions on the stern. The electric motors, solenoids, patented IPC control system, and mechanical parts of the propulsion system are all custom designed and built - utilizing the extensive experience gained through years of leadership in the global thruster market.   Docking has never been easier Our PRO™ thruster models are equipped with speed control, giving you full variable control of the thruster. The speed control is more intuitive for you as a boater and makes for a quieter and more relaxed maneuver. If you install a dual thruster system (bow and stern), you get the revolutionary hold function, pinning the boat to the pier while docking.   Ignition protection We offer ignition-protected thruster models to provide a reliable and safe installation in locations where the thruster motor may be exposed to water or gasoline fumes.  Our IP models have a hermetically sealed composite housing around all electric parts.  An additional advantage is that electric parts that could obtain water damage are also covered and protected, making these thrusters the ideal choice for stern thruster installations where ensuring that the thruster will always remain dry is difficult. The IP versions have all the benefits and proven reliability of our standard tunnel thrusters. Properties S-LINK™ S-Link™ is a CAN-based control system used for communication between Sleipner products installed on a vessel. Compact and waterproof plugs Keyed and color-coded connectors to ensure correct and easy installation Different cable lengths, extenders and T-connectors makes the system scalable and flexible to install Q-PROP™ The Q-PROP™ has measured noise reductions of up to 75% in controlled environments. The five-bladed skew propeller reduces noise levels while maintaining exceptional efficiency. Some thruster models even see an increase in thrust power.  The expected noise reduction in average installations: 20-40% Upgrade kits are available for most Sleipner thruster models with special adaptors PRO™ A PRO™ thruster system enables you to apply only the necessary power to complete your maneuver. The variable speed control eliminates the noise associated with standard on/off thrusters. The system also includes a practical hold-function. In a dual system (bow and stern) a single press of a button will keep you alongside the docks - making docking truly a one-person job.  Speed controlled thrusters are the best choice for joystick interaction.​ INTELLIGENT POWER CONTROL Sleipner's patented intelligent power control provides a minimal delay between drive directions to reduce wear of the mechanical parts while monitoring solenoid functions. In the case of a solenoid lock-in, the thruster will automatically stop without extra user action or controlling the main switch. HOLD-FUNCTION Docking your vessel has never been easier. With a single press of a button, you can rely on your thrusters to maintain the boat controlled against the dock while stepping off to secure the lines — making docking truly a one-person job. OVERHEAT PROTECTION When high temperatures are detected, On/off thrusters are automatically shut off to prevent overheating. PRO™ thrusters with speed control provide extended run-time by derating power to maintain temperature within safe levels.  SAFE START-UP This control panel use dual ‘on’ buttons to prevent accidental activation for a child-safe environment. FLEXIBLE INSTALLATION Sleipner offers installation flexibility to work with the space you have. Our thruster models allow installation at any angle on the tunnel, tailored to fit any space available in your vessel.  GALVANIC SEPARATION Immersed parts exposed to seawater are galvanic isolated from the onboard electrical system, eliminating stray currents. SEALED DRIVE LUBRICATION The thruster gearleg is pre-filled for lifetime lubrication and sealed using a long-time mechanical seal with ceramic and carbon surfaces for ultimate security against water intrusion.   SINGLE PROPELLER A properly engineered single propeller will be the most energy efficient thruster. Its compact design fits easily into narrow bows making it the perfect match for our smaller thruster range. Main power Value Power supply 24V DC Nominal voltage 21V DC Current consumption A 170A Power output at nominal voltage 2.4kW / 3.2hp Recommended fuse A ANL 150 Cold Cranking Amps (CCA) Value Minimum battery CCA (DIN) 175 Minimum battery CCA (SAE) 332 Minimum battery CCA (EN) 280 Performance and features Value Motor cycle duty 2 - 3 min. Duty cycle at 20°c (Ambient temperature) Thrust ratings Value Thrust at 24V 73kg / 161lbs Thrust at 21V 60kg / 132lbs Features Value Intelligent Power Control Yes Q-Propeller Yes Single Propeller Yes Sealed Drive Lubrication Yes Galvanic Separation Yes Variable Speed Control Yes S-Link Yes Overheat Protection Yes Safe Start-Up / Child safety Yes Hold Thrust Yes Ceramic Seals Yes Flexible Installation Yes Plug and play signal cables Yes Dimensions Value (H) Height 264mm / 10.39in (L) Length 208mm / 8.19in (W) Width 200mm / 7.87in (ID) Internal Diameter 185mm / 7.28in (WD min.) Minimum Water Depth 185mm / 7.28in (TL min.) Minimum Tunnel Length 124mm / 4.88in (TL) Recommended Tunnel Length 152mm / 5.98in (T min.) Minimum Tunnel Wall Thickness 5mm / 0.20in (T max.) Maximum Tunnel Wall Thickness 7mm / 0.28in (CT) Cable Terminal M8 Stern Thruster Dimensions Value H 202mm / 7.95in (L) Internal Length 214mm / 8.43in (+L) Tunnel Length 265mm / 10.43in W 335mm / 13.19in (D) Diameter 204mm / 8.03in (WD) Stern Water Depth 185mm / 7.28in (HT) Maximum Hull Thickness 43mm / 1.69in Installation capability Value Bow Capability Yes Stern Capability Yes Tunnel Capability Yes Ideal vessel integration Value Typical vessel class Motor boat, Sail boat Typical vessel size 8-11m / 26-36ft Product weight Value Net weight 15kg / 33.07lbs User Manual, SE Pro and SE Pro ignition protected (SEP, SEP-IP) User Manual English pdf Download EU Declaration of Conformity - Thruster SEP Conformity Certificate English pdf Download DWG.fil SE60/185S2-24V Side-Power tunnel thruster - bow - metadata CAD File English dwg Request PDF.fil SE60/185S2-24V Side-Power tunnel thruster - bow - metadata Technical drawing English pdf Request DWG.fil SE60/185S2-24V Side-Power tunnel thruster - STERN - metadata CAD File English dwg Request XT.fil SE60/185S2-24V Side-Power tunnel thruster - bow CAD File English x-t Request STP.fil SE60/185S2-24V Side-Power tunnel thruster - bow CAD File English stp Request Joystick integration overview for Sleipner thruster systems Service, Maintenance and Support English pdf Download Installation Manual, SE Pro (SEP60) Installation Manual English, NOT_TRANSLATED pdf Download User Manual, SE Pro and SE Pro ignition protected (SEP, SEP-IP) - GERMAN User Manual German pdf Download Print spare parts SEP60 PRO™ tunnel bow/stern thruster 24V SM908028 SEP60/185S2-24V 08.09.2026 Guide to navigating spare parts Below you will see the top-level assembly of spare part groupings available to you. If you desire a component within the presented assembly group, click on the name tag below the image to be directed to a detailed spare parts list for that assembly group. If no additional spare parts are available, it means that the current assembly group must be purchased as a whole due to service or installation requirements.  + - ⇔   1 Electric motor Item code: 4 0105 24 Quantity: 1 Go to product page - + Add product   2 PPC 520 Item code: PPC520 Quantity: 1 Go to product page - + Add product   3 Flexible coupling Item code: SM-137073 Quantity: 1 Go to product page - + Add product   4 Bracket Item code: 4 0502 Quantity: 1 Go to product page - + Add product   5 Gearleg Item code: 4 0602 Quantity: 1 Go to product page - + Add product 1 Electric motor SEP60 24V Below is a sub-level assembly of spare part groupings. If no additional spare parts are available, it means that the current assembly group must be purchased as a whole due to service or installation requirements. + - ⇔   1 Solenoid cover kit for SE60 Item code: SM168211 Quantity: 1 Go to product page - + Add product PHOTO NOT AVAILABLE 2 DIN 933 - M6 x 12 Quantity: 2 Bolt PHOTO NOT AVAILABLE 3 DIN 6798 - A 6,4 Quantity: 2 Serrated lock washer PHOTO NOT AVAILABLE 4 Solenoid replacement Item code: 41471242 Quantity: 1 Go to product page - + Add product PHOTO NOT AVAILABLE 5 Electric motor Item code: 4 2010 24 K Quantity: 1 PHOTO NOT AVAILABLE 6 Internal wiring harness for PRO™ models Item code: 6 1223 Quantity: 1 Go to product page - + Add product PHOTO NOT AVAILABLE 7 Wiring loom Item code: 6 1222 Quantity: 1 Go to product page - + Add product PHOTO NOT AVAILABLE 8 Temp sensor Item code: 31091 Quantity: 1 Go to product page - + Add product PHOTO NOT AVAILABLE 9* Brushes for motor (kit) Quantity: 1 -- PHOTO NOT AVAILABLE 10* Brushes spring for motor (kit) Quantity: 1 -- PHOTO NOT AVAILABLE 11* Temp switch Quantity: 1 -- Footnotes 9* Please provide thuster # serial when ordering Brushes for motor (kit). 10* Please provide thuster # serial when ordering Brushes spring for motor (kit). 11* Please provide thuster # serial when ordering Temp switch. 2 PPC520 PRO™ power control unit Below is a sub-level assembly of spare part groupings. If no additional spare parts are available, it means that the current assembly group must be purchased as a whole due to service or installation requirements. + - ⇔ PHOTO NOT AVAILABLE 1 DIN 933 - M8 x 25 Quantity: 3 DIN 933 - M8 x 25 PHOTO NOT AVAILABLE 2 DIN 934 - M8 Quantity: 3 DIN 934 - M8 PHOTO NOT AVAILABLE 3 DIN 7981c M4,8x16 Quantity: 4 DIN 7981c M4,8x16   4 Kabel thruster Kontroll 5m Item code: 6 1280-05M Quantity: 1 Go to product page - + Add product 3 Flexible coupling SE50/60 Below is a sub-level assembly of spare part groupings. If no additional spare parts are available, it means that the current assembly group must be purchased as a whole due to service or installation requirements. + - ⇔ PHOTO NOT AVAILABLE 1 Drive pin Ø4x32mm Quantity: 1 141285 - ISO 8734 - 4 x 32 - A   2 Flexible coupling Item code: 140992 Quantity: 1 Go to product page - + Add product 4 Motor bracket SE60 Below is a sub-level assembly of spare part groupings. If no additional spare parts are available, it means that the current assembly group must be purchased as a whole due to service or installation requirements. + - ⇔ PHOTO NOT AVAILABLE 1 Gasket Item code: 6 1061 Quantity: 1 Go to product page - + Add product PHOTO NOT AVAILABLE 2 Bolt Quantity: 4 DIN 912 - M8 x 22 (A2) PHOTO NOT AVAILABLE 3 Label Item code: 4 8570 Quantity: 1 PHOTO NOT AVAILABLE 4 Measurement template Item code: 4 8561 Quantity: 1 Go to product page - + Add product PHOTO NOT AVAILABLE 5 Support plate for motor bracket Item code: 4 1242 Quantity: 1 Go to product page - + Add product PHOTO NOT AVAILABLE 6 Bracket Quantity: 1 5 Gearleg SE60 Below is a sub-level assembly of spare part groupings. If no additional spare parts are available, it means that the current assembly group must be purchased as a whole due to service or installation requirements. + - ⇔   1 Propeller Item code: 4 1261 Quantity: Go to product page - + Add product   2 Gearleg Item code: 4 0602-U Quantity: Go to product page - + Add product 6 Solenoid cover kit SE60 Below is a sub-level assembly of spare part groupings. If no additional spare parts are available, it means that the current assembly group must be purchased as a whole due to service or installation requirements. + - ⇔ PHOTO NOT AVAILABLE 1 Solenoid cover SE60S Item code: 4 2026 A Quantity: 1   2 Nut for solenoid cover Item code: 6 8807 Quantity: 2 Go to product page - + Add product 7 Solenoid SE50/60 24V Below is a sub-level assembly of spare part groupings. If no additional spare parts are available, it means that the current assembly group must be purchased as a whole due to service or installation requirements. + - ⇔ PHOTO NOT AVAILABLE 1 Hexagon Socket Set Screw Quantity: 2 DIN 916 - M4 x 12 PHOTO NOT AVAILABLE 2 Solenoid SE60/SP55 24V Quantity: 1 -- PHOTO NOT AVAILABLE 3 Pan head screw w/ serrated lock washer Quantity: 4 ISO 7045 M4 x 6 A2 PHOTO NOT AVAILABLE 4 Relebrakett SE60 Quantity: 1 -- PHOTO NOT AVAILABLE 5 Blind Rivet Quantity: 2 DIN 7337 - A3,2 x 8 PHOTO NOT AVAILABLE 6 Relay Clip Quantity: 1 -- 8 Gearleg SE60, w/out propeller Below is a sub-level assembly of spare part groupings. If no additional spare parts are available, it means that the current assembly group must be purchased as a whole due to service or installation requirements. + - ⇔ PHOTO NOT AVAILABLE 1 Hex head bolt partially threaded Quantity: 2 DIN 931-1 - M8 x 55   2 Gasket 1mm Item code: 6 1311 10 Quantity: 1 Go to product page - + Add product   3 Gasket 1,5mm Item code: 6 1311 15 Quantity: 1 Go to product page - + Add product   4 Drive pin Item code: 6 1241 Quantity: 1 Go to product page - + Add product PHOTO NOT AVAILABLE 5 Propeller washer SS2324 Quantity: 1 Ø12 x 1,9 x Ø22 PHOTO NOT AVAILABLE 6 DIN 985 - M12x1,75 Quantity: 1 Lock Nut   7 Alu anode SE60/80/100 Item code: 7 1190 A Quantity: 1 Go to product page - + Add product Kits Gasket kit for gearleg/tunnel SE60 (6 1311 10 + 6 1311 15) SM900356 4 0610 Anode, aluminium SE60/80/100 SM902952 7 1190 A 9 Anode, aluminium SE60/80/100 Below is a sub-level assembly of spare part groupings. If no additional spare parts are available, it means that the current assembly group must be purchased as a whole due to service or installation requirements. + - ⇔ PHOTO NOT AVAILABLE 1 Anode, aluminium Item code: 7 9998 Quantity: 1 PHOTO NOT AVAILABLE 2 Bolt - DIN 6912 - M6 x 16 Quantity: 1 -- Disclaimer Sleipner warranties the original spare parts supplied only. The installer alone has responsibility for the installation of the spare parts. Do not attempt to fit replacement parts unless you are competent. If the spare part is fitted incorrectly, Sleipner Group will not be liable for any damage resulting. The information given in the document was correct at the time it was published. However, Sleipner Group cannot accept liability for any inaccuracies or omissions it may contain. Continuous product improvement may change the product specifications without notice. Consequently, Sleipner Group cannot accept liability for any possible differences between product and document. Are Lithium-ion (Li-ion), LiFePO4 or Lithium batteries a good solution for thruster battery banks? Not necessarily. These systems typically come with a Battery Management System (BMS) that will disconnect the thruster in case of any issue with the battery (for instance, if the thruster draws more current than the BMS allows). Just imagine a sudden cut-out in the middle of a maneuver without any pre-warning. At Sleipner, we recommend a solution with a simple, separate battery and without a disconnect BMS system (such as the lead acid bank frequently used for starting or similar). The helmsman will then be warned when the battery is getting low and feel that the thrusters are gradually losing power, which is significantly better than losing your thrusters without any pre-warning. Disclaimer: Ensure battery/energy source is installed according to CE/ISO current rules and regulations and by licensed electricians. Can I use LiFePO4, Lithium or Lithium-ion batteries for my thrusters? Yes, you can, but not without taking some precautions. Sleipner produces two product lines of thrusters that will work well with high-capacity batteries and one product line which should be used with caution in combination with LiFePO4, Lithium, Li-ion, or similar batteries, which may be capable of delivering higher voltage under load than traditional batteries (such as lead-acid, AGM, gel or similar). All Sleipner proportional thrusters will work well with Li-ion or LiFePO4 batteries, as the included PPC unit will control the output voltage to a safe level for the thruster. Make sure, though, that you actually get a good battery intended for maritime use. NB - make sure you have the latest embedded software installed. All Sleipner eVision thrusters have built-in functionality to limit the maximum voltage delivered to the thruster. Again, make sure your battery is intended for maritime use. Traditional DC on/off thrusters may be damaged or have a reduced life expectancy if operated at voltage levels outside their specifications. Disclaimer: Ensure battery/energy source is installed according to CE/ISO current rules and regulations and by licensed electricians. Can the thruster cause the BMS (Battery Management System) to disconnect the batteries? Yes. Most engineers would tell you that it is not ideal for connecting the bow thrusters to a service bank protected by a Battery Management System. Thrusters are heavy consumers, and they may create sudden peaks in current draw, which again may cause the BMS to disconnect the batteries if the thruster draws more current than allowed. If this happens in the middle of a maneuver, you would be left without thrusters and may lose control of the boat. Hence, Sleipner recommends that the thrusters be connected to a separate battery bank (that is not lithium) without a Battery Management System that can disconnect the batteries (and consequently the thrusters). Disclaimer: Ensure battery/energy source is installed according to CE/ISO current rules and regulations and by licensed electricians. What is IPC (Intelligent Power Control)? This is a unique patented Sleipner safety feature supplied with all standard (on/off) DC electric Sleipner thrusters. The IPC functionality provides two unique features:  1) It will detect "flapping" of the solenoid (typically caused by badly charged batteries that are subject to a huge current draw and voltage drop when the thruster motor is engaged), and will stop trying to run the thruster, preventing excess solenoid contact tip wear and dramatically reducing the risk for a weld-in situation of the solenoid. A 'weld in' (run away) situation is when a thruster continues operating without a signal from the operator at the control panel.  2) Even if the solenoid has a weld-in situation, which even with the IPC prevention actions is still possible, as all mechanical switches can weld-in at a point, the unique IPC function will STOP THE THRUSTER, without active action by the operator. This will give the operator time to locate and Select OFF on the thruster system Isolation/Main Switch. What is the S-link control system? S-link is a Sleipner CAN BUS based control system with full intelligent communication between all devices within the system, much like a computer network. It is used for all retract thrusters and Pro thrusters with a DC control system. Main advantages include: • Round, compact and waterproof plugs with unique keying and color coding to avoid faulty hookups.  • An unlimited number of commands or information transfer on a single cable. • It has user feedback to panel • Intelligent troubleshooting What type of batteries are recommended for thrusters? Sleipner recommends that the thrusters are connected to a battery bank that is not protected by a Battery Management System (BMS). Typically this means lead-acid, AGM, gel, or similar kinds of batteries. This is important because thrusters draw a lot of currents quickly, and the high amp draw may lead the BMS system to think that there is an issue with the system and consequently disconnect the batteries from the circuit, in which case you would lose maneuverability. If you have Lithium batteries powering your thrusters, the best advice we can give you is to check the actual voltage measured on the thrusters during operation. Sleipner thrusters are designed to operate within a specific voltage range, and as long as you are within these boundaries, it doesn’t matter for the thruster if the current is delivered by this or that battery pack. It may also be a very good idea to check the actual current drawn from the battery during full power at the thruster to see that you are not at the limit for the BMS to avoid sudden loss of maneuverability if the BMS disconnects the battery. With installations where the battery pack is far from the thruster, the higher voltage delivered by LiFePO4 or similar batteries might not be a problem as you will experience a voltage drop through the long cables. Always make sure you measure your voltage on the thruster to avoid the risk of early thruster wear. As battery tehcnology is changing rapidly, we always recommend consulting a professional battery supplier.  Disclaimer: Ensure battery/energy source is installed according to CE/ISO current rules and regulations and by licensed electricians. A legacy that commits We’ve lived and worked with the unruly sea for a hundred years. That’s why we develop important features that enables a boat to handle the sea better – that enable you to enjoy your boat, at anchor and at full speed. That is why you wanted a boat, isn’t it? Beautiful engineering The technology in our solutions is world-class. We know, because we’ve developed it ourselves, just as we manufacture every solution, and follow them until their fixed to a hull, ourselves. This meticulous attention to detail is why your day out always will be better with a Sleipner aboard. Worldwide service We take pride in our solutions’ function throughout their lifespan. So, we never really let them out of sight, even when they’ve left for distant shores. Our global network is there to ensure continuous optimal function. You know what you get with a Sleipner, today and tomorrow. RESOURCES FAQ Knowledge hub Spare parts Product Catalogs mySite Fault Code Navigator ABOUT SLEIPNER Our Story Patents Careers at Sleipner Meet us at events Press Sustainability Explore Thruster Stabilizer Steering Anchor windlass Follow us LinkedIn Facebook YouTube Instagram Newsletter Arne Svendsensgate 6-8 NO-1610 Fredrikstad Phone : +47 69 30 00 60 Reg No : 932455463 Sitemap Terms of use Privacy © 2026 Sleipner