The Garmin Class B Drive Unit Linear Drive is a hydraulic actuator designed for large sailboats, upgrading the GHP-12 autopilot system with hands-free, precise steering. It delivers steady, linear steering to keep your vessel on course in changing conditions.
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Drive Type: Hydraulic linear drive that translates subtle helm inputs into smooth, linear steering control, built to endure long voyages.
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Displacement Range: Designed for sailboats up to 79,000 lbs displacement to ensure reliable autopilot performance.
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Stroke Length: 12" (303 mm) travel for ample responsiveness and control.
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Maximum Thrust: 2380 lb (1080 kg) to power through gusts and chop.
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Motor Dimensions: 8.8" × 3" × 3.5" (223 × 76 × 88 mm).
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Cylinder Dimensions (centered): 32.7" × 4.1" × 6.3" (830 × 105 × 160 mm).
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Reservoir Dimensions: 7.9" × 6.1" × 3.3" (200 × 155 × 85 mm).
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Supply Voltage: 10V–30V.
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Clutch Current (12V): 1 A (avg).
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Motor Current (12V): 3–4 A (avg).
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Operating Temperature: −15 °C to 60 °C (5 °F to 140 °F).
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Durability: Marine-grade construction that endures challenging sea conditions while delivering precise feedback and control.
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Compatibility: Designed to integrate with the GHP-12 autopilot corepack for a seamless upgrade to hands-free navigation.
The Class B Drive Unit delivers steady, reliable steering when weather and seas change, transforming subtle helm input into confident, controlled motion. It supports hands-free navigation through seamless GHP-12 integration, making long voyages more manageable for crew and captains alike. Its robust hydraulic design and high-thrust capability help maintain course stability in gusts and chop while providing clear installation guidance with detailed dimensions for planning.
