HIGH-SPEED CRAFT • P/N 000-15570-001
SIMRAD GC85 MK2
UP TO 70 KNOTS • IMO A.821(19) HSC
The Simrad GC85 Compact Gyro System MK2 (Catalog P/N 000-15570-001) is the dedicated high-speed marine heading solution engineered specifically for fast passenger catamarans, hydrofoils, high-speed military interceptors, and crew transfer vessels (CTV) operating at speeds up to 70 knots. Conforming strictly to IMO A.821(19) and ISO 16328 HSC, it pairs the specialized GC85 Master Compass (P/N 27101682) with the Compact Control Unit MK2 (P/N 000-15036-001). Explore all model comparisons in our Simrad GC80/85 MK2 Master Guide.
000-15570-001
Up to 70 Knots
P/N 44170728 (HSC)
IMO A.821(19) • Wheelmark
1. High-Speed Craft Dynamic Performance
At speeds between 30 and 70 knots, vessel course changes induce severe centrifugal forces and rapid turn accelerations that degrade standard commercial gyro accuracy. The Simrad GC85 system addresses these challenges with:
- Dedicated HSC Sensitive Element (P/N 44170728): Contains specially formulated fluid damping and precision torsion suspension tuned to resist turning errors during high-speed maneuvering.
- Follow-Up Rate of 75°/sec: Fast-reacting servo follow-up ensures repeaters, radar orientation, and autopilots track sharp turns without lag.
- Zero Annual Oil Changes: The sealed fluid chamber eliminates the risk of oil leakage during high-vibration high-speed transit.
2. Verified GC85 HSC Spare Parts & Assemblies
| Subassembly / Module | Part Number | Technical Function & Notes |
|---|---|---|
| GC85 Sensitive Element | 44170728 | HSC gyrosphere (70 knots). Do not install standard GC80 element 44174027. |
| Special Service Tool | 44174449 | Mandatory tool for extracting and seating sensitive element safely. |
| GC85 Master Compass (Unit) | 27101682 | HSC master compass enclosure tuned for high turn-rate dynamics. |
| Compact Control Unit MK2 (Complete) | 000-15036-001 | Complete control unit assembly with CPU, power supply, and display. |
| MCC PCB (Master Compass Control) | 44142313 | Alt: 10189501 02 • Inside Master Compass. |
| Inverter Module PCB | 44141760 | Alt: 10169537 • Drives high-frequency rotor motor in gyrosphere. |
| Master Compass Fuse (F1) | 12A | Protects internal inverter power supply feed. |
Get Simrad MK2 Complete Systems & Genuine Spares
Seanav Marine supplies factory-certified Simrad GC80 & GC85 complete MK2 systems, sealed sensitive elements (44174027 & 44170728), exchange control units, and certified technician attendance across UAE, India, Oman, Egypt, Singapore, and worldwide ports.
Seanav Marine Technical Operations Desk
Reviewed by Lead Marine Electronics Engineer & Gyrocompass Specialists • Global Service Stations • Verified OEM Reference.
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