The Tokyo Keiki TG-8100 Gyrocompass is a high-precision marine navigation instrument that provides accurate true heading information independent of the Earth’s magnetic field. Designed for commercial ships in compliance with IMO and SOLAS requirements, it serves as the primary heading sensor for integrated bridge systems.

The TG-8100 continuously supplies stable heading data to essential navigation equipment, including ECDIS, radar, autopilot, AIS, Voyage Data Recorder (VDR), and steering control systems. It uses advanced gyro technology to maintain accurate heading information even under challenging sea conditions, such as vessel rolling, pitching, and rapid course changes.

The system features a compact control unit, high reliability, fast settling time, and multiple digital and analog output interfaces for easy integration with modern bridge equipment. It also supports IEC 61162-1/2 (NMEA) communication and Bridge Alert Management System (BAMS) compatibility, making it suitable for both new ship installations and retrofit projects.

Technical Specification

Item	Specification
Manufacturer	Tokyo Keiki Inc.
Model	TG-8100
Type	Marine Gyrocompass
Application	IMO/SOLAS commercial vessels
Power Supply	AC 100/110/115/220 V, 1-phase, 50/60 Hz
Emergency Power	DC 24 V
Power Consumption	140 VA (startup), 70 VA (normal operation)
Settling Time	Less than 4 hours
Settling Point Error	Less than ±0.3°
Repeatability	Less than ±0.2°
RMS Error	Less than 0.1°
Scorsby Table Accuracy	Less than ±0.5°
Maximum Follow-up Rate	75°/s
Permissible Roll/Pitch	±45°
Serial Outputs	IEC 61162-1, IEC 61162-2 (NMEA compatible)
Repeater Outputs	DC 24 V stepper (up to 4 repeaters)
Rate-of-Turn Outputs	Analog ±5 V and ±10 V
Speed Input	200 or 400 pulses/NM
GPS Position Input	IEC 61162-1
External Heading Input	IEC 61162-1/2 (optional)
Alarm Outputs	Dry contacts (operation/alarm)
BAMS Support	IEC 62923 Bridge Alert Management System