The SI-TEX SP38-18 Autopilot Core Pack pairs the SP-38 control head with a compact GPS compass and rotary feedback unit — everything needed to build out a full autopilot system except the hydraulic pump. Intelligent Steering Technology (IST) adapts continuously to sea conditions and vessel speed, while the AUTO-SETUP routine handles drive detection, rudder response timing, and compass calibration automatically. The sunlight-readable 5.7" color LCD switches to a red night palette to preserve operator night vision, and NMEA 2000, Ethernet, and NMEA 0183 connectivity keeps the system integrated with existing onboard instruments.

Features:

• IST (Intelligent Steering Technology) delivers superior vessel steering across varying conditions
• ADAPTIVE steering automatically adjusts to sea state and vessel speed changes
• AUTO-SETUP routine handles drive detection, rudder response time, and compass detection and calibration
• NMEA 2000, Ethernet, and NMEA 0183 input/output interface
• Configurable for fishing vessels, offshore boats, workboats, towboats, and yachts
• WORK Mode optimized for fishing boats, towboats, and workboats
• PRC (Proportional Rate Control) delivers smooth, gentle steering response
• Multi-station capability with security station lock
• Sunlight-viewable 5.7" color LCD with 9-level backlight and red night palette
• NAV Mode provides adaptive, precise track steering
• ALC (Automatic Leeway Compensation) corrects for drift, tide, and wind
• Fully compatible with onboard instruments and existing steering systems
• Optional Z-Drive interface supports 360° azimuth drive
• Optional automatic bow-thruster control for hands-free Sabiki fishing or station keeping
• Multi-language support: English, Chinese, French, German, Norwegian, Spanish, Italian, Vietnamese, and more
• Flush mount kit included; optional swivel mount bracket available
• IP67 waterproof rating on control head, TS4, NF4, and WS4 components
• RoHS and CE compliant for EMI and RFI immunity
• Pre-defined parameter sets for full/semi-displacement hulls, planing hulls, stern drives, and sailboats
• Multiple steering parameter sets for fast cruise, slow cruise, and work modes
• Course knob with mechanical detent for simple, tactile adjustments
• Automatic trim function
• Adjustable yaw, turn rate, and rudder settings
• PORT and STBD dodge buttons for collision avoidance
• Analog rudder angle indicator output supports up to 4 stations

Specifications:

• Operating Voltage: 10–30 VDC
• Power Consumption: 0.5 A average, 3 A peak (reduced with low backlight setting)
• Drive Output: 20 A
• Network: NMEA 2000 and Ethernet
• Navigational Interface: NMEA 0183 input/output
• NMEA 0183 Output: Heading (10x per second), Autopilot Status (1x per second)
• Heading Reference: Fluxgate, magnetic compass, NMEA compass, or satellite compass
• Course Resolution: 1°
• Course Detection: 0.5°