Simrad HS75 GNSS Compass - Professional Marine Navigation Sensor with Multi-Satellite Support

The Simrad HS75 GNSS Compass (Model 000-16143-001) delivers commercial-grade heading accuracy and positioning performance for serious mariners who demand precision navigation. This advanced GNSS compass supports five satellite constellations - GPS, GLONASS, Galileo, BeiDou, and QZSS - providing unmatched reliability and accuracy even in challenging marine environments.

Superior Heading Performance for Critical Marine Systems

Unlike standard GPS receivers that estimate heading based on vessel movement, the HS75 provides precise 0.75-degree heading accuracy even when stationary. This makes it essential for autopilot systems, advanced radar functionality, and precision navigation applications where magnetic compasses fall short and gyrocompasses prove cost-prohibitive.

Key Performance Features

• 0.75° Heading Accuracy: Commercial-grade precision surpasses magnetic compass limitations
• 20Hz Update Rate: High-speed position calculations ideal for fast powerboats
• Multi-GNSS Support: GPS, GLONASS, Galileo, BeiDou, and QZSS constellation tracking
• SBAS Capability: Enhanced positioning accuracy with satellite augmentation systems
• Six-Axis Motion Sensing: Provides rate of turn, heave, pitch, and roll data

Advanced Navigation Data for Professional Applications

The HS75 outputs comprehensive navigation data through NMEA 2000®, making it compatible with professional marine electronics ecosystems. The integrated gyroscope and tilt sensors ensure continuous operation during GPS signal interruptions, providing backup heading data accurate to within 1 degree per minute for up to three minutes.

Complete Motion Sensing Suite

• Rate of Turn: Critical data for optimal autopilot performance
• Heave Compensation: Essential for sonar equipment wave action correction
• Pitch and Roll: Stabilization data for advanced marine systems
• Dead Reckoning: Temporary navigation during satellite signal loss

Technical Specifications

Physical Dimensions

• Size: 158 x 74 x 348 mm (6.2" x 2.9" x 13.7")
• Weight: 0.75 kg (1.65 lbs)
• Antenna Separation: 20 cm (7.87") between phase centers
• Compass Safe Distance: 50 cm (19.7") minimum from magnetic compasses

Electrical Specifications

• Power Consumption: 3.2W typical
• Supply Voltage: 6-36 VDC
• Connection: NMEA 2000 Micro-C connector
• Network Protocol: NMEA 2000 certified

Environmental Ratings

• Operating Temperature: -40°C to +70°C (-40°F to +158°F)
• Storage Temperature: -40°C to +85°C (-40°F to +185°F)
• Humidity: 95% non-condensing
• Waterproof Rating: IPX7

Professional Installation and Integration

The HS75 features plug-and-play installation with versatile mounting options. The compact 35cm form factor allows flexible placement while maintaining optimal satellite reception. Professional installers appreciate the straightforward NMEA 2000 integration and comprehensive PGN output compatibility.

Installation Options

• Direct Surface Mount: Flat surface installation capability
• Pole Mount Available: Optional bracket kit (000-15686-001) for mast mounting
• Surface Mount Kit: Optional kit (000-15687-001) for custom installations
• NMEA 2000 Cables: Available separately in various lengths

NMEA 2000 Data Output

The HS75 transmits comprehensive navigation data including System Time (126992), Vessel Heading (127250), Rate of Turn (127251), Position Rapid Update (129025), COG & SOG updates (129026), GNSS Position Data (129029), and GNSS satellite information (129539/129540).

Applications and System Integration

• Autopilot Systems: Primary heading source for precision steering
• Radar Integration: Enhanced target tracking and ARPA performance
• Chart Plotter Interface: Accurate vessel orientation and motion data
• Fishfinder Enhancement: Heave compensation for bottom tracking
• Commercial Vessels: Professional-grade navigation for working boats

Why Choose the Simrad HS75

The HS75 bridges the gap between basic GPS receivers and expensive gyrocompass systems, delivering professional-grade performance at a fraction of traditional costs. Its multi-constellation GNSS support ensures reliable operation worldwide, while the integrated motion sensors provide comprehensive vessel dynamics data essential for modern marine electronics.

Frequently Asked Questions

What mounting hardware is included with the HS75?

The HS75 includes basic flat surface mounting hardware. Pole mount brackets (000-15686-001) and surface mount kits (000-15687-001) are sold separately for specialized installations.

Is the HS75 compatible with all NMEA 2000 systems?

Yes, the HS75 is NMEA 2000 certified and compatible with all compliant marine electronics. It outputs standard PGNs for heading, position, motion, and satellite data.

How does the HS75 maintain accuracy during GPS outages?

The integrated six-axis rate sensor provides backup heading information accurate to within 1 degree per minute for up to three minutes during GPS signal loss.

What's the difference between the HS75 and standard GPS receivers?

Unlike GPS receivers that estimate heading from vessel movement, the HS75 provides true heading even when stationary, plus comprehensive motion sensing data for professional marine applications.

Can the HS75 interfere with magnetic compasses?

The HS75 should be mounted at least 50cm (19.7") away from magnetic compasses to prevent interference with their operation.