Sleipner SE40 Tunnel bow/stern thruster, 12V (SE40/125S2)

The SE40 is a compact electric tunnel thruster with 40kg of thrust, small enough to fit boats as little as 8-10.5m.

Κωδικός: SE40/125S2
Μήκος σκάφους
8 - 10.5 m


The SE40 is a compact electric tunnel thruster with 40kg of thrust, small enough to fit boats as little as 8-10.5m. With a sealed gearleg, high-performing Q-propeller, and easy-access anodes, this thruster makes a powerful and easy-to-maintain addition to any boat.

It is fitted either in a tunnel through the boat's bow or into a stern tunnel at the boat's stern using a stern thruster kit (sold separately).

SE40 is also available in PRO version, IP version, or both. Remote control is a popular accessory.
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.
Power supply
Powered by direct current.
Sleipner analog signal cables with Plug & Play connectors are color-coded to match the wiring diagrams with high-quality connectors to ensure a correct installation.
Automatic detection of overheating of internal components. When an unsafe temperature is detected, the unit is automatically shut off to prevent overheating.
Immersed parts exposed to seawater are galvanic isolated from the onboard electrical system, eliminating stray currents.
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.
A properly engineered single propeller system 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. With more than 60.000 single propeller thrusters in use, the single propeller has proven its reliability.
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
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.
  • (H) Height: 263mm / 10.35in
  • (L) Length: 183mm / 7.2in
  • (W) Width: 206mm / 8.11in
  • (ID) Internal Diameter: 125mm / 4.92in
  • (WD) Water Depth: 125mm / 4.92in
  • (TL) Recommended Tunnel Length: 136mm / 5.35in
  • (TL min.) Minimum Tunnel Length: 111mm / 4.37in
  • (T min.) Minimum Tunnel Wall Thickness: 4mm / 0.16in
  • (T max.) Maximum Tunnel Wall Thickness: 6mm / 0.24in
Stern dimensions:
  • H: 205mm / 8.07in
  • (L) Internal Length: 228mm / 8.98in
  • (+L) Tunnel Length: 188mm / 7.4in
  • W: 197mm / 7.76in
  • (D) Diameter: 159mm / 6.26in
  • (WD) Stern Water Depth: 125mm / 4.92in
  • (HT) Maximum Hull Thickness: 17mm / 0.57in
Operating PowerElectric
Power Requirement12V DC
Power Output2.2kW / 3hp
Thrust at 12V48kg / 105lbs
Thrust at 10.5V40kg / 88lbs
Nominal Current Draw315A
Min. Battery CCA (DIN)300
Min. Battery CCA (SAE)570
Min. Battery CCA (EN)520
Recommended fuseANL 250
Ideal Vessel ClassMotor boat, Sail boat
Ideal Vessel Size8-10.5m / 26-34ft
Bow CapabilityYes
Stern CapabilityYes
Retractable CapabilityNo
External Mounting CapabilityNo
Tunnel CapabilityYes
Weight10kg / 22lbs

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