Propulseur rétractable SRL 12V — Sleipner SRL80/185T-12V

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Sleipner

SRL80/185T-12V

Retractable Thruster SRL 12V

The Sleipner SRL 12V retractable thruster (SRL80/185T-12V) delivers 96 kg of thrust at 12V, designed for vessels 10 to 15 meters. Its retractable design eliminates drag while sailing, while its 4.4 kW motor and 185 mm tunnel ensure precise maneuverability. This system includes S-Link™ control and protections against overheating and galvanic corrosion.

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Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Technical specifications

Operating voltage	12
Power Control Features	Intelligent Power Control
Power Control Type	Intelligent Power Control
Remote Control Compatible	Yes
Upgrade Compatibility	Upgrade to PRO variable speed control

Detailed description

The Sleipner retractable thruster SRL 12V, model SRL80/185T-12V, is designed for harbour manoeuvres in tight spaces. This model is intended for vessels 10 to 15 meters (35 to 48 feet) in length, providing 80 kg of thrust at 10.5V and up to 96 kg at 12V. It features a quick-retract system, deploying in 3 to 5 seconds and fully retracting into the hull when not in use, eliminating water resistance during sailing.

Design and technical performance

This thruster integrates a 4.4 kW (6 hp) electric motor operating at 12V, with a tunnel diameter of 185 mm. Its weight is 31 kg. The SRL80/185T-12V has a low-profile design, incorporating a 90-degree motor assembly with bevel gears, reducing installation height and allowing integration into shallow hull compartments. The propulsion system uses tandem propellers for optimal thrust efficiency. The PRO™ models (available as an option) feature variable speed control and a holding function to assist solo docking.

Reliability and built-in safety

The SRL80/185T-12V is equipped with the S-Link™ control system, a CAN-bus architecture for reliable communication and simplified installation via color-coded, waterproof connectors. It incorporates Sleipner’s patented Intelligent Power Control (IPC) system, which minimizes delay between direction changes and monitors solenoid performance to prevent mechanical wear. Overheat protection automatically shuts down the system if internal temperatures rise too high. The stern tube is sealed for life, and galvanic isolation is implemented to electrically isolate submerged components, preventing corrosion. A minimum battery capacity of 550 CCA (DIN) is required for operation.

Documentation

Type	Nom
	Documentation Sleipner — Propulseur rétractable SRL 12V

Expert opinion

« Technical analysis of the Sleipner SRL 12V retractable thruster »

The Sleipner SRL 12V retractable thruster (SRL80/185T-12V) is a relevant solution for recreational boaters and professionals seeking discreet and high-performance maneuvering assistance. Its retractable design makes it particularly suitable for sailboats and motorboats where hydrodynamic drag is a critical factor. By retracting fully, it neither impacts speed nor fuel consumption during navigation, setting it apart from fixed tunnel thrusters. The rapid deployment mechanism (3-5 seconds) is a major asset for unexpected docking situations.

The integration of the S-Link™ control system simplifies installation and networking with other Sleipner equipment, providing a robust and reliable architecture. However, installing this type of thruster requires rigorous planning for integrating the retraction pocket into the hull. The low vertical footprint, thanks to the 90-degree offset motor, facilitates positioning in shallow bilges, but sufficient space must be validated for the mechanism and maintenance access. Its availability on a quote basis from Skysat is essential, as precise sizing based on the vessel type, draft, freeboard, and control accessories (panels, joysticks) is required to ensure long-term performance and reliability. Its 96 kg thrust at 12V positions it for medium-sized vessels, up to approximately 15 meters, where significant assistance is needed for delicate maneuvers.

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Retractable Thruster SRL 12V

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Frequently Asked Questions

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What are the main specifications of the Sleipner SRL retractable thruster (12V)?

The Sleipner SRL 12V retractable thruster is designed with several key features to enhance safety, control, and performance:

Intelligent power control: Minimizes mechanical wear and monitors solenoid performance.Gravity-fed lubrication: A separate oil reservoir above the waterline feeds the gearcase by gravity, ensuring effective sealing and easy oil changes.Q-PROP propeller: A five-bladed, skewed propeller that reduces noise by 20 to 40% while maintaining or improving thrust.Overheat protection: Automatically detects high internal temperatures and shuts down the system before damage occurs.Galvanic isolation: All immersed parts are electrically isolated to eliminate stray currents and prevent galvanic corrosion.Safe start-up: Requires a two-button activation on control panels to prevent accidental starts.Sealed gearcase lubrication: Lifetime factory-filled lubrication with durable ceramic and carbon seals.

What is the maximum thrust provided by the SRL80/185T-12V thruster?

The Sleipner SRL80/185T-12V retractable thruster delivers a maximum thrust of 96 kg at 12V power supply.

For which type of sailboat is this retractable thruster recommended?

The Sleipner SRL80/185T-12V retractable thruster is ideally suited for vessels between 10 and 15 meters (or 35 to 48 feet).

Why is this thruster only available on quote?

This thruster is offered only on a quote basis as it is a primary system requiring expert validation. This approach ensures proper sizing of the unit for your boat, voltage compatibility, optimized installation, and selection of necessary accessories for a correct and efficient setup.

Can the SRL80/185T-12V bow thruster be fitted with variable speed control?

Yes, the SRL80/185T-12V thruster can be upgraded with Sleipner’s PRO™ variable speed control system. This upgrade enables smooth, quiet, and precise maneuvers, and includes a hold function for twin systems, allowing the boat to be gently held against the dock with a single button press. It is also ideal for integration with a joystick.

What is the tunnel diameter required for installing this thruster?

The Sleipner SRL80/185T-12V retractable thruster requires an internal tunnel diameter (ID) of 185 mm for installation.

What are the minimum battery requirements to power this 12V thruster?

To properly power the Sleipner SRL80/185T-12V retractable thruster, the battery must provide a minimum cold cranking amperage (CCA) of 550 DIN.

What is the Q-PROP technology used on this thruster and what are its advantages?

Sleipner’s Q-PROP technology uses a five-blade, skewed propeller. Its main advantages are:

A noise reduction of 20 to 40 % in real-world installations (and up to 75 % in controlled tests).Maintenance or improvement of thrust performance compared to traditional propellers.Upgrade kits are available for most Sleipner models.