Side-Power EX40 External Bow Thruster (12V)

Looking for reliable bow thrusters for small boats? The EX40 Compact External Bow Thruster is the ideal solution for vessels between 24 and 34 feet (7.5–10.5 m). Designed for owners who need powerful maneuverability without the space for a tunnel thruster, this externally mounted bow thruster offers outstanding control in tight marinas, docking situations, and challenging currents.

Unlike conventional systems, the EX40 can be installed at the very front of the hull, giving it superior leverage for precise handling. Its compact design makes it a popular option for small sailboats or retrofits where interior space is limited. With minimal installation requirements and reduced noise levels, it provides smooth performance and reliability in a cost-effective package.

Small Boat Bow Thruster

Choosing the right small boat bow thruster is essential for safe and easy navigation. The EX40 has been engineered specifically for boats between 24 and 34 ft, giving owners better control when docking in strong winds, tight slips, or crowded marinas.

Its compact size and smart design make it a popular choice for:

• Recreational boats looking for improved maneuverability.

• Small sailboats where space inside the hull is limited.

• Retrofitted vessels that need a reliable and space-saving thruster.

Key Benefits

• Perfect for small boats: optimized for vessels 24–34 ft (up to 11 m).

• Compact external mounting: no need for large tunnels or major hull modifications.

• Hydrodynamic design: reduces drag and increases efficiency.

• Easy installation: requires drilling only three small holes, lowering install costs.

• Quiet operation: reduced noise thanks to submerged motor and optimized tunnel shape.

• Space-saving: less interior equipment required, ideal for retrofits.

• Long-lasting: water-cooled motor ensures durability and extended run times.

Applications & Use Cases

• Maneuvering small boats safely in marinas and narrow docks.

• Retrofitting older vessels that lack space for tunnel systems.

• Enhancing control on small sailboats in windy or current-heavy waters.

• Adding extra safety for recreational and fishing boats during docking.

Installation & Compatibility

• Quick installation requiring only three small holes.

• Compact external electric bow thruster design minimizes hull modifications.

• Fits a wide range of small boat hull types.

• Ideal retrofit solution where tunnel thrusters are not feasible.

Externally Mounted Bow Thruster

The EX40 is an externally mounted bow thruster, which makes it a smarter choice for many boat owners compared to traditional tunnel systems. By mounting directly at the bow, it provides better leverage, reduces noise, and avoids the need for extensive hull modifications.

Key advantages of the external design:

• Simple, low-cost installation with minimal drilling.

• Hydrodynamic housing that reduces drag.

• Easier to retrofit on existing small boats.

• Less space needed inside the hull.

Comparison with Tunnel Thrusters

Maintenance & Durability

• Water-cooled motor & housing prevents overheating.

• Submerged design increases longevity.

• Simple access for periodic inspection.

• Built to withstand continuous marine use.

Technical Specifications

Why Choose the EX40 External Electric Bow Thruster?

• It’s one of the most versatile bow thrusters for small boats, especially when tunnel thrusters are not an option.

• Ideal for retrofit projects: upgrade older boats without extensive modifications.

• Works exceptionally well on small sailboats that require maneuverability in marinas.

• Its external electric design makes it easier to maintain and more efficient than traditional systems.