SKU: SIM00016143001
UPC: 9420064131570
MPN: 000-16143-001
The Simrad HS75 is a multi-constellation satellite compass built for boaters who need reliable heading data without the cost and upkeep of a traditional gyrocompass. It pulls signals from several global positioning systems to hold heading accuracy within 0.75 degrees, even when the vessel is sitting still. Measuring 348 mm in length and weighing just 0.75 kg, the unit mounts to a flat surface or pole and ties into your network through a single Micro-C connection. For owners running Simrad autopilots and radar, it's a clean source of heading and position data that integrates with the rest of your NMEA 2000 sensors.
Heading comes from two antennas separated by 20 cm between phase centers, with both heading and positioning refreshing at 10 Hz. An integrated 6-axis gyro and rate sensor keeps heading available during temporary satellite outages through dead reckoning, and the unit calculates rate of turn, heave, pitch, and roll for autopilot and stabilization use. Positioning accuracy reaches 0.6 m at 95 percent confidence with satellite-based augmentation corrections applied. The housing carries an IPX7 waterproof rating and runs across an operating range of minus 40 to plus 70 degrees Celsius on 6 to 36 VDC, drawing roughly 3.2 watts. It supports GPS, GLONASS, BeiDou, Galileo, and QZSS, and the network port is certified for marine data networks.
The HS75 fits sailboats and powerboats where a fast-settling, accurate heading source matters for autopilot tracking, radar overlay, and chart orientation. Because it holds heading while stationary, it's a strong choice for vessels that spend time at anchor or maneuvering at low speed where magnetic compasses struggle. Mounting kits are sold separately, and the 50 cm compass-safe distance is worth planning into your install. Pair it with a compatible display or autopilot from our marine displays selection, or browse our GPS sensors for additional position and heading options.
The HS75 holds heading accuracy to within 0.75 degrees RMS, and it maintains that accuracy even while the vessel is stationary. That's well beyond what a standard magnetic rate compass delivers, without the expense and maintenance of a gyrocompass.
It receives from five constellations: GPS, GLONASS, BeiDou, Galileo, and QZSS. Multi-constellation reception improves positioning reliability and heading performance, and the unit also supports satellite-based augmentation corrections for positioning accuracy to roughly 0.6 m at 95 percent confidence.
The compass uses a single NMEA 2000 Micro-C port and is NMEA 2000 certified, so it drops into an existing network backbone. It's compatible with Simrad autopilots and radar systems, supplying heading, position, rate of turn, heave, pitch, and roll data.
Yes. An integrated 6-axis gyro and rate sensor provide backup heading through dead reckoning during temporary satellite outages, so your autopilot and display keep receiving usable heading data while the unit reacquires signal.
No. Mounting hardware for flat-surface or pole mounting is sold separately. When planning the install, allow for the 50 cm compass-safe distance from magnetic compasses and sensitive equipment.
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