Above $1000

SLEIPNER SEP100/185T-24V PROPORTIONAL TUNNEL THRUSTER | 24V | 100KG/220LB | TWIN PROPS

Unlock total command of your vessel with throttle-exact docking precision and massive 24V twin-propeller efficiency. The Sleipner Side-Power SEP100/185T-24V is a premium, high-performance 24V proportional tunnel thruster delivering a robust 100 kg (220 lbs) of lateral thrust. Engineered for vessels from 35 to 55 feet, this unit features factory-standard S-Link™ Proportional Control. Instead of sudden full-blast "on/off" bursts, it allows you to gently feed in power via a throttle joystick for whisper-quiet, pinpoint control over your bow or stern.

By operating on a 24V architecture, this system ensures highly efficient power delivery—running significantly cooler, drawing fewer amps, and experiencing less voltage drop over long cable runs than standard 12V alternatives.

Key Features:

• True Proportional Power (S-Link™): Offers exact, metered variable speed control. Apply a gentle, quiet 10% nudge to smoothly hold position at the slip, or throttle up to 100% power to confidently fight heavy crosswinds and tearing currents.

• Twin Q-Prop™ Counter-Rotating Propellers: Outfitted with aerodynamically skewed, 5-blade composite twin propellers that maximize raw water-flow thrust through the 185mm tunnel while cutting cabin noise and vibration by up to 75%.

• High-Efficiency 24V Architecture: Built for standard 24V marine electrical grids, this model manages sustained loads flawlessly and utilizes lighter, more flexible wiring runs during installation.

• Intelligent Power Control (IPC): Sleipner’s patented smart monitoring firmware protects the internal relays, preventing instant directional shifts and automatically cutting power if an electrical fault or overheating occurs.

• Intelligent "Hold" Function: When paired with a proportional control panel, you can press the "Hold" button to lock in a specific thrust percentage—letting the thruster safely hold the boat against the dock single-handedly while you safely tie off mooring lines.

• Galvanic Isolation Gearleg: The gear housing features a completely isolated propeller shaft, preventing electrochemical reaction and galvanic corrosion from spreading to vital internal drive components.

Specifications:

• Part Number: SEP100/185T-24V

• Thrust Power: 100 kg (220 lbs) at 21V / 116 kg (255 lbs) at 24V

• Typical Vessel Size: 35 to 55 Feet (10.5 to 16.5 meters)

• System Voltage: 24V DC

• Tunnel Diameter: 185 mm (7.3'')

• Control System: S-Link™ Digital Bus (Variable Speed)

• Propulsion Type: Twin Counter-Rotating 5-Blade Q-Prop™

Pro Tip: Proportional thrusters run much longer and quieter than standard on/off models. By running the SEP100 at 30–40% power, you can comfortably hold your vessel against a dock or lock wall for extended periods without risking the rapid overheating common in old-school thrusters.

SLEIPNER SXP EXTERNAL STERN THRUSTER | 12V PROPORTIONAL | 100KG/220LB | SXP100/185T-12V

The definitive external transom-mount solution for high-leverage stern control, standard 12V convenience, and whisper-quiet docking. The Sleipner Side-Power SXP100 (SXP100/185T-12V) is a heavy-duty, externally mounted stern thruster engineered for motor yachts and sailing vessels where internal space is unavailable or a traditional tunnel cannot be installed. Delivering 100 kg (220 lbs) of robust lateral thrust, this fully sealed system mounts directly to your transom, keeping your interior bilges completely clear.

Equipped with factory-standard S-Link™ Proportional Control, the SXP100 upgrades your boat from old-fashioned, full-blast "on/off" thrusters to smooth, variable-speed throttle control. It hooks directly into your existing 12V house or thruster battery banks, allowing you to dial in a gentle, quiet nudge for minor adjustments or apply full power to hold your stern against stiff crosswinds and ripping currents.

Key Features:

• True Proportional Power (S-Link™): Variable speed capability gives you exact, metered power. It vastly reduces battery consumption and cabin noise by running only at the exact output percentage required.

• 12V Drop-In Compatibility: Connects directly into standard 12V marine electrical systems, delivering serious heavy-duty docking muscle without requiring complex voltage step-up series or independent 24V battery banks.

• Hermetically Sealed External Pod: The motor and internal electronics are housed in a rugged, fully sealed, ignition-protected (IP) composite casing. This makes it completely waterproof and perfectly safe for installation on gasoline-powered boats or near fuel vapor zones.

• Space-Saving Transom Mount: Eliminates the need to sacrifice valuable internal locker space or modify complex structural components inside the bilge. It mounts cleanly at the absolute furthest point aft, maximizing mechanical leverage.

• Hydrodynamically Streamlined Cowl: The external housing is carefully sculpted to minimize drag and turbulence while underway, ensuring your cruising speed and fuel efficiency remain unaffected.

• Twin Q-Prop™ 5-Blade Propellers: Outfitted with aerodynamically skewed composite 5-blade twin propellers that deliver up to a 75% reduction in cavitation noise while maximizing raw water-flow thrust.

Specifications:

• Part Number: SXP100/185T-12V

• Thrust Power: 100 kg (220 lbs) at 10.5V / 116 kg (255 lbs) at 12V

• System Voltage: 12V DC

• Tunnel Diameter: 185 mm (7.3'')

• Control System: S-Link™ Digital Bus (Variable Speed)

• Propulsion Type: Twin Counter-Rotating 5-Blade Q-Prop™

Pro Tip: External stern thrusters provide far superior leverage compared to internal tunnel stern thrusters because they are positioned further away from the boat's pivot point. This extended distance means the 100 kg of thrust on the SXP100 works significantly harder to swing your stern exactly where you want it.

SLEIPNER SX35 EXTERNAL STERN THRUSTER | 12V | 35-43KG THRUST | FOR TRANSOMS UP TO 150MM

The ultimate ultra-compact external stern thruster engineered for smaller vessels or tight hulls—no extensive fiberglass work required. The Sleipner Side-Power SX35 (150mm Version) is a highly versatile, self-contained external pod thruster designed specifically for motorboats and cruising sailboats up to 32 feet. Outfitted with an extended 150mm (5.9") mounting shaft structure, this model is explicitly built to effortlessly pass through extra-thick transoms and deep cored hulls up to 150mm in thickness.

The SX35 packs an impressive punch for its compact size, yielding a reliable 77 lbs (35 kg) of continuous thrust at a 10.5V nominal load, and ramping all the way up to 95 lbs (43 kg) of peak thrust at a full 12V charge.

Key Features:

• Extended 150mm Transom Capability: Engineered with a specialized long-reach mounting thread layout, this unit securely clamps through deep-cored fiberglass, reinforced transoms, and heavy-timber backings up to 150mm (5.9 inches) thick without requiring hull thinning.

• No Complex Glasswork / Easy Installation: Eliminates the need for traditional internal fiberglass tunneling. Installation only requires drilling small, clean mounting holes for the securing bolts and the main power cable entry sleeve.

• Patented Intelligent Power Control (IPC): Sleipner’s advanced microprocessor-controlled safety system provides a protective millisecond delay when switching drive directions to eliminate mechanical drivetrain shock. It actively monitors solenoid function and automatically kills power if a solenoid lock-in is detected.

• Whisper-Quiet Single Q-Prop™ Propeller: Features a state-of-the-art 5-blade composite skew propeller running inside a highly optimized 140mm (5.5") integrated tunnel. Paired with vibration-absorbing hull connection sleeves, this setup drops cabin noise and stern vibrations by up to 75%.

• Ignition Protected (ISO 8846) & Hermetically Sealed: Certified under ISO 8846 and UL 1500 standards. All electrical components are isolated inside a watertight composite casing, making it 100% safe to install on gasoline-powered boats or near fuel vapor lockers.

• Enhanced Hydrodynamic Water Cooling: Because the entire aluminum pod sits completely submerged outside the hull, it benefits from constant, rapid water-jacket cooling, resulting in significantly longer continuous runtimes per cycle than internal DC alternatives.

• Complete Galvanic Separation: Immersed aluminum and drive components are thoroughly isolated from the vessel's onboard 12V electrical ground network, terminating the threat of stray-current galvanic corrosion. Includes factory-installed anodes for immediate underwater protection.

• Zero Maintenance Sealed Lubrication: Features a lifetime-lubricated gearhousing running a heavy-duty ceramic-on-carbon mechanical seal face, guaranteeing total protection against saltwater intrusion.

Specifications:

• Product Line: SX35 (Extended Shaft Variant)

• Thrust Power (at 10.5V Nominal): 35 kg (77 lbs)

• Thrust Power (at 12V Peak): 43 kg (95 lbs)

• Motor Output (at 10.5V): 1.8 kW (2.4 HP)

• Typical Vessel Size Class: Up to 32 Feet (9.5 meters)

• System Voltage: 12V DC

• Max Transom/Hull Thickness: Up to 150 mm (5.91'')

• Internal Tunnel Diameter: 140 mm (5.51'')

• Nominal Current Draw: 250 Amps

• Recommended Fuse Size: ANL 150

• Net Weight: 15.3 kg (33.7 lbs)

• Propulsion System: Single 5-Blade Q-Prop™

• Control Signaling Type: Analog Plug-and-Go

Pro Tip: For vessels experiencing heavy water-flow friction at cruising speeds, or for sailboats looking to minimize drag to zero, the SX35 can be retrofitted with an optional Hydropod low-drag cowl kit. This seamlessly covers the pod assembly to ensure smooth hydrodynamic tracking while under way.

SX35/140-12V-150MM-2

SLEIPNER SEP100/185T-12V PROPORTIONAL TUNNEL THRUSTER | 12V | 100KG/220LB | TWIN PROPS

Unlock total command of your vessel with throttle-exact docking precision and massive 12V twin-propeller efficiency. The Sleipner Side-Power SEP100/185T-12V is a premium, high-performance 12V proportional tunnel thruster delivering a robust 100 kg (220 lbs) of lateral thrust. Engineered for vessels from 35 to 55 feet, this unit features factory-standard S-Link™ Proportional Control. Instead of sudden full-blast "on/off" bursts, it allows you to gently feed in power via a throttle joystick for whisper-quiet, pinpoint control over your bow or stern.

By operating on a 12V architecture, this system integrates directly into your existing standard house or thruster battery banks, giving you heavy-duty docking muscle without the need for complex voltage converters or dedicated 24V charging setups.

Key Features:

• True Proportional Power (S-Link™): Offers exact, metered variable speed control. Apply a gentle, quiet 10% nudge to smoothly hold position at the slip, or throttle up to 100% power to confidently fight heavy crosswinds and tearing currents.

• 12V Drop-In Compatibility: Connects seamlessly into standard 12V marine electrical systems, providing commercial-grade docking power tailored for conventional powerboats and cruisers.

• Twin Q-Prop™ Counter-Rotating Propellers: Outfitted with aerodynamically skewed, 5-blade composite twin propellers that maximize raw water-flow thrust through the 185mm tunnel while cutting cabin noise and vibration by up to 75%.

• Intelligent Power Control (IPC): Sleipner’s patented smart monitoring firmware protects the internal relays, preventing instant directional shifts and automatically cutting power if an electrical fault or overheating occurs.

• Intelligent "Hold" Function: When paired with a proportional control panel, you can press the "Hold" button to lock in a specific thrust percentage—letting the thruster safely hold the boat against the dock single-handedly while you step off to secure mooring lines.

• Galvanic Isolation Gearleg: The gear housing features a completely isolated propeller shaft, preventing electrochemical reactions and galvanic corrosion from spreading to vital internal drive components.

Specifications:

• Part Number: SEP100/185T-12V

• Thrust Power: 100 kg (220 lbs) at 10.5V / 116 kg (255 lbs) at 12V

• Typical Vessel Size: 35 to 55 Feet (10.5 to 16.5 meters)

• System Voltage: 12V DC

• Tunnel Diameter: 185 mm (7.3'')

• Control System: S-Link™ Digital Bus (Variable Speed)

• Propulsion Type: Twin Counter-Rotating 5-Blade Q-Prop™

Pro Tip: Proportional thrusters run much longer and quieter than standard on/off models. By running the SEP100 at 30–40% power, you can comfortably hold your vessel against a dock or lock wall for extended periods without risking the rapid overheating common in old-school thrusters.

SLEIPNER SR100/185T RETRACTING THRUSTER KIT | 24V ON-OFF | 100KG/220LB | SR100/185T-24V

Command heavy-duty docking authority without compromising your vessel's cruising speed, efficiency, or performance. The Sleipner Side-Power SR100 (SR100/185T-24V) is a premium, 24V retractable on-off thruster kit designed specifically for sailing yachts and motor cruisers where a traditional fixed tunnel is not possible or creates unacceptable hull drag. Delivering a massive 100 kg (220 lbs) of lateral thrust, this unit folds completely flush into the hull when not in use, preserving your boat's raw speed and hydrodynamic profile.

This comprehensive kit features an intelligent, fast-acting single actuator mechanism for smooth deployment and standard on-off single-speed control, offering a rugged and highly reliable docking solution for mid-to-large-sized vessels.

Key Features:

• Retractable Flush-Mount Design: Drops down deep under the waterline for effortless docking maneuvers, and folds safely back up into the hull while cruising—completely eliminating underwater resistance and drag.

• Heavy-Duty 100 kg (220 lbs) Thrust: Provides robust pushing power to easily pivot your bow or stern, giving you complete command even in stubborn crosscurrents or tight docking slips.

• High-Efficiency 24V Architecture: Designed for high-performance marine electrical grids, the 24V setup ensures the thruster runs cooler, handles heavy loads better, and utilizes lighter wiring runs than 12V alternatives.

• Deep Waterline Leverage: Because a retractable thruster deploys deeper into the water than a standard fixed tunnel thruster, it achieves maximum leverage and eliminates cavitation (drawing in surface air) for highly efficient, quieter operation.

• Twin Q-Prop™ Counter-Rotating Propellers: Outfitted with aerodynamically skewed composite twin propellers that maximize raw thrust output while drastically reducing cabin noise and vibration by up to 75%.

• Intelligent Power Control (IPC): Sleipner’s patented smart monitoring firmware protects your solenoids and mechanical gears by preventing instant direction changes and automatically cutting power if a fault is detected.

Specifications:

• Part Number: SR100/185T-24V

• Thrust Power: 100 kg (220 lbs) at 21V / 116 kg (255 lbs) at 24V

• System Voltage: 24V DC

• Tunnel Diameter: 185 mm (7.3'')

• Operation Type: Standard Single-Speed (On / Off)

• Propulsion Type: Twin Counter-Rotating Q-Prop™

Pro Tip: Retractable thrusters are the gold standard for modern performance sailboats and shallow-draft vessels. Operating on a 24V system ensures minimum voltage drop over long cable runs from the battery bank to the bow or stern compartment, giving you full rated power when you need it most.

SLEIPNER SR100/185T RETRACTING THRUSTER KIT | 12V ON-OFF | 100KG/220LB | SR100/185T-12V

Command heavy-duty docking authority without sacrificing an ounce of cruising speed or modifying your boat's electrical grid. The Sleipner Side-Power SR100 (SR100/185T-12V) is a premium, 12V retractable on-off thruster kit designed specifically for sailing yachts and motor cruisers where a traditional fixed tunnel is impossible or creates unacceptable hull drag. Delivering a massive 100 kg (220 lbs) of lateral thrust, this unit folds completely flush into the hull when not in use, preserving your boat's raw speed, fuel efficiency, and hydrodynamic profile.

This comprehensive kit features an intelligent, fast-acting single actuator mechanism for smooth deployment and standard on-off single-speed control. It integrates seamlessly into your vessel's existing 12V house or dedicated thruster battery banks, offering a rugged, heavy-duty docking solution without the need for complex voltage converters.

Key Features:

• Retractable Flush-Mount Design: Drops down deep under the waterline for effortless docking maneuvers, and folds safely back up into the hull while cruising—completely eliminating underwater resistance and speed-robbing drag.

• Heavy-Duty 100 kg (220 lbs) Thrust: Provides robust pushing power to easily pivot your bow or stern, giving you complete command even in stubborn crosswinds or tight marina slips.

• 12V Drop-In Compatibility: Connects directly into standard 12V marine electrical systems, delivering serious docking muscle without requiring complex voltage step-up series or an independent 24V battery bank.

• Deep Waterline Leverage: Because a retractable thruster deploys deeper into the water than a standard fixed tunnel thruster, it achieves maximum leverage and eliminates cavitation (drawing in surface air) for highly efficient, quieter operation.

• Twin Q-Prop™ Counter-Rotating Propellers: Outfitted with aerodynamically skewed composite twin propellers that maximize raw thrust output while drastically reducing cabin noise and vibration by up to 75%.

• Intelligent Power Control (IPC): Sleipner’s patented smart monitoring firmware protects your solenoids and mechanical gears by preventing instant direction changes and automatically cutting power if a fault is detected.

Specifications:

• Part Number: SR100/185T-12V

• Thrust Power: 100 kg (220 lbs) at 10.5V / 116 kg (255 lbs) at 12V

• System Voltage: 12V DC

• Tunnel Diameter: 185 mm (7.3'')

• Operation Type: Standard Single-Speed (On / Off)

• Propulsion Type: Twin Counter-Rotating Q-Prop™

Pro Tip: The 12V version of the SR100 is the ultimate high-power safety upgrade for standard 12V boats. Because retractable thrusters drop deeper under the waterline than a typical tunnel thruster, it achieves maximum leverage and performance out of your 12V system with significantly less tunnel noise.

Sleipner SRP100/185T Retracting Proportional Thruster (24V, 100kg)

Take complete control of your vessel with the Sleipner SRP100/185T Retracting Proportional Thruster. Designed specifically for modern sailboats and fast motor yachts, this 24V thruster delivers a robust 100kg (220 lbs) of thrust without compromising your boat's performance.

Because it fully retracts into the hull when not in use, you get the maneuverability of a powerful thruster at the dock, with absolutely zero hydrodynamic drag when you are underway. Combined with Sleipner’s PRO™ proportional speed control, you can apply the exact amount of power you need—allowing for whisper-quiet, pinpoint docking in tight marinas.

Key Benefits

• Zero Drag Design: The thruster unit stows cleanly inside the hull, ensuring your vessel maintains its top speed and sailing efficiency.

• Proportional Speed Control: Unlike traditional on/off thrusters, the PRO™ system lets you feather the joystick. Use low power for quiet, slight adjustments, or full power when fighting heavy winds and currents.

• Intelligent Power Control (IPC): Protects against voltage drops, prevents the thruster from running out of water, and guards against relay delays to ensure maximum reliability and safety.

• S-Link™ Technology: Uses Sleipner’s CAN-bus based control system for seamless plug-and-play installation and communication between marine instruments.

• Twin Propeller Efficiency: The 185mm twin-propeller setup maximizes thrust output while minimizing cavitation and noise.

Technical Specifications

Why Choose Sleipner (Side-Power)?

Formerly known as Side-Power, Sleipner is the global leader in marine thruster technology. When you install an SRP100, you are investing in commercial-grade reliability, safer docking, and a more relaxing boating experience.

SLEIPNER SRV100/185T VERTICAL RETRACTING THRUSTER KIT | 12V ON-OFF | 100KG/220LB | SRV100/185T-12V

Command heavy-duty docking muscle with zero cruising drag on a standard 12V system. The Sleipner Side-Power SRV100 (SRV100/185T-12V) is a high-performance, vertically retracting on-off thruster kit engineered for mid-sized vessels. Delivering a massive 100 kg (220 lbs) of lateral thrust, this unit drops straight down for flawless maneuvering in tight marinas and pulls back completely flush into the hull when underway, guaranteeing zero underwater resistance.

This "component-only" kit features a flange-mounted configuration where the core thruster and motor assembly are enclosed in a bolt-down casing. This makes it an ideal drop-in replacement or straightforward component for custom boat builders looking to integrate premium retractable thruster technology into standard 12V house or thruster battery banks.

(Note: This SKU contains the vertical mechanical thruster unit, actuator, and 12V motor assembly; it does not include the installation outer frame or mold-in flange base).

Key Features:

• Vertical Retraction Mechanism: Extends vertically downward to maximize water depth and pushing leverage, then retracts straight up flush with the hull to completely eliminate speed-robbing drag.

• Heavy-Duty 100 kg (220 lbs) Thrust: Provides robust pushing power to easily pivot your bow or stern, giving you complete command even in strong crosswinds or tight docking slips.

• 12V Drop-In Compatibility: Integrates seamlessly into standard 12V marine electrical systems, providing heavy-duty docking power without the need for complex voltage converters or independent 24V battery banks.

• Deep Waterline Leverage: Because a retractable thruster deploys deeper under the waterline than a traditional fixed tunnel thruster, it operates with maximum efficiency and avoids drawing in surface air (cavitation).

• Twin Q-Prop™ Counter-Rotating Propellers: Outfitted with aerodynamically skewed 5-blade twin propellers that deliver maximum thrust efficiency while cutting down cabin vibration and noise by up to 75%.

• Intelligent Power Control (IPC): Sleipner’s patented smart monitoring firmware protects your solenoids and mechanical gears by preventing instant direction changes and automatically cutting power if a fault is detected.

Specifications:

• Part Number: SRV100/185T-12V

• Thrust Power: 100 kg (220 lbs) at 10.5V / 116 kg (255 lbs) at 12V

• System Voltage: 12V DC

• Tunnel Diameter: 185 mm (7.3'')

• Operation Type: Standard Single-Speed (On / Off)

Important Buyer Note: This unit does not include the outer mounting frame or base flange. It is designed as a direct replacement component or for custom yacht building projects where the fiberglass flange base is supplied separately or constructed directly into the hull by the builder.