The Garmin Class A Drive Unit is a hydraulic linear drive that powers your sailboat's steering through the GHP 12 Marine Autopilot System. Engineered for larger vessels, it delivers smooth, precise autopilot control for confident sailing on every voyage.
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Drive Type: Hydraulic linear drive designed for sailboat steering automation and seamless integration with the Garmin GHP 12 Marine Autopilot.
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Stroke Length: 12" (303 mm)
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Maximum Thrust: 800 lb (400 kg)
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Vessel Compatibility: Suitable for larger sailboats with displacement up to 28,500 lbs (12,927 kg)
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Dimensions (WxHxD): 32.3" x 6.5" x 6.1" (820 x 165 x 155 mm)
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Supply Voltage: 10V to 30V wide operating range
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Current Draw (12V): Clutch ~0.5 A; motor ~1–2 A
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Operating Temperature: -15°C to 60°C (5°F to 140°F)
With a 12" stroke and 800 lb thrust, the drive unit delivers precise rudder positioning and responsive steering control in choppy seas, while maintaining smooth, hydraulic movements that complement the GHP 12 autopilot. Its compact footprint fits installations on boats with limited space, and the wide 10–30V supply range plus conservative current draw make it adaptable to a variety of electrical setups for extended voyages. Designed for reliable operation across -15°C to 60°C environments, it supports confident sailing on both demanding passages and everyday cruising.
