Equip your substantial vessel with the unyielding precision of the Raymarine Type 3 24V hydraulic linear drive. Engineered for mechanically steered boats exceeding 20,000 kg displacement—up to a robust 35,000 kg—this remanufactured powerhouse delivers seamless autopilot performance where electric drives fall short. Its self-contained design integrates a high-capacity reversing pump, fluid reservoir, and heavy-duty hydraulic ram, ensuring reliable steering even in demanding offshore conditions.
Connect it effortlessly to your rudder stock through an independent tiller arm, and harness the full potential of Raymarine’s advanced autopilot systems. Ideal for long-range cruisers, commercial workboats, or superyacht tenders, this drive transforms helm control into effortless automation, letting you focus on the horizon ahead.
Why Choose This Hydraulic Linear Drive for Your Vessel?
Unmatched Power for Large Hulls: Generates peak thrust of 1,200 kg and 3,200 Nm rudder torque, tackling heavy loads with 300 mm stroke for full rudder authority.
Rapid Response: Achieves hard-over-to-hard-over in just 10 seconds, matching the agility of smaller craft despite the scale.
Remanufactured Excellence: Factory-refurbished to exceed original standards—thoroughly inspected, tested, and rebuilt with premium components for like-new reliability at a fraction of new-unit demands.
Seamless Integration: Pairs perfectly with the ACU-400 corepack and Raymarine Evolution autopilots, supporting precise course-keeping via hydraulic feedback.
Durable Marine Build: Corrosion-resistant materials withstand saltwater exposure, vibrations, and extreme weather, backed by Raymarine’s proven engineering.
Hydraulic Superiority Over Electric Alternatives
For vessels in this displacement class, hydraulic drives like this one outperform electric rams by providing consistent torque regardless of load or sea state. No stalling under windage or current—pure, proportional power directly from the pump ensures your autopilot tracks flawlessly during beam seas or quartering waves.
Technical Specifications
Specification
Detail
Maximum boat displacement
35,000 kg
Peak thrust
1,200 kg
Maximum stroke
300 mm
Hard-over to hard-over times
10 seconds
Maximum rudder torque
3,200 Nm
Corepack compatibility
ACU-400
Note: Requires a back-drivable steering system. Accessory tiller arm fittings may be needed from your helm manufacturer.
Installation and Operation Insights
Mount the unit securely near the rudder stock, ensuring clear access for hydraulic lines and electrical connections. Plumb the system with high-pressure hoses rated for marine use, and prime the reservoir to eliminate air pockets before commissioning. Calibrate via your Raymarine autopilot interface for optimal rudder response—adjust gain settings to suit your hull’s handling characteristics.
Pro Tips for Peak Performance
Monitor hydraulic fluid levels seasonally and top up with Raymarine-approved ATF to prevent cavitation.
Pair with a gyro-stabilized compass for superior track-holding in rough waters.
For twin-rudder setups, consider dual drives synchronized through the ACU-400.
Reman units arrive pre-tested; perform a dockside hard-over test post-install to verify alignment.
Frequently Asked Questions
What size boats is the Raymarine Type 3 24V hydraulic drive suited for?
It’s designed for mechanically steered vessels from over 20,000 kg up to 35,000 kg displacement, perfect for larger cruisers and workboats needing robust autopilot steering.
