SEP80 PRO™ tunnel bow/stern thruster 24V
Call 954-577-2850 or Send Enquiry for Pricing
SEP80 PRO™ with variable speed control is one of Sleipner’s most popular models with 80-96 kg thrust. Suitable for boats between 35-48 feet. Can be mounted in the bow and stern.
SE80 utilizes the same mechanical parts as the more powerful SE100, making it exceptionally energy-efficient. 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.
Product Description
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.

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.
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.
FLEXIBLE COUPLING
Flexible coupling protects the product’s driveline by compensating for minor misalignments between the shafts of the thruster motor and gearleg.
TWIN PROPELLERS
Twin propellers can provide more thrust than a single propeller system in the same tunnel diameter. We use this system in our mid-range models, where high thrust is required in small tunnel diameters. Due to the compact design and high performance, the twin models have become the thrusters of choice among boatbuilders worldwide.
| Category | Specification | Value |
|---|---|---|
| Power & Electrical | Power Supply / Nominal Voltage | 24V DC / 21V DC |
| Current consumption / Power output | 280A / 4.4kW (5hp) | |
| Recommended fuse | ANL 250 | |
| Min. Battery CCA (DIN / SAE / EN) | 300 / 570 / 520 | |
| Performance | Motor cycle duty | 2 – 3 min. (at 20°C ambient) |
| Thrust (at 24V / 21V) | 96kg (211lbs) / 80kg (176lbs) | |
| Features | Key Technologies | Intelligent Power Control, Q-Propeller, Twin Props, Sealed Drive, Galvanic Separation, Variable Speed, S-Link, Overheat Protection, Ceramic Seals, Plug & Play |
| Dimensions | (H) Height / (L) Length / (W) Width | 344mm / 206mm / 261mm |
| (ID) Internal Diameter | 185mm | |
| (WD min.) Min. Water Depth | 185mm | |
| (TL min.) Min. Tunnel Length | 179mm | |
| (TL) Recommended Tunnel Length | 216mm | |
| (T min./max) Wall Thickness | 6mm / 8mm | |
| (CT) Cable Terminal | M8 | |
| H / (L) Internal Length | 281mm / 303mm | |
| (+L) Tunnel Length / W | 265mm / 335mm | |
| (D) Diameter / (WD) Stern Depth / (HT) Max Hull | 216mm / 185mm / 56mm | |
| Integration & Weight | Installation Capability | Bow / Stern / Tunnel (All Yes) |
| Typical Vessel Class / Size | Motor boat, Sail boat / 10-15m (32-49ft) | |
| Net Weight | 20kg / 44lbs |





