Gyro Compass Overhaul, Sphere Renewal & Annual Maintenance India
Gyro compass overhaul enquiry
Send the gyro make, model, operating hours and last overhaul date. Describe whether the heading drifts, the gyro fails to settle, or a repeater disagrees with the master. Include any alarm codes so we can assess whether the fault is in the master gyro or the heading distribution system.
Seanav Marine provides 24/7 certified Gyro Compass annual maintenance, sensitive element overhaul, sphere replacement, and bearing repeater synchronization across all Indian ports. Stocking original gyrospheres, supporting fluids, and gaskets in our Mumbai and Chennai bonded stores, our factory-trained technicians service Sperry Marine (Navigat), Tokyo Keiki, Raytheon Anschütz, and Yokogawa gyros with a 2-hour attendance SLA at major berths.
Supported OEM Equipment & Multi-Make Coverage
Send the equipment make and model so we can confirm the scope and parts availability.
Technical Specifications & Operational Coverage
| Supported Manufacturers | Sperry Marine (Navigat 100/200/X MK1), Tokyo Keiki (TG-8000/6000), Anschütz (Standard 22/30), Yokogawa (CMZ900/700) |
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| Service Capabilities | Annual Overhaul, Sensitive Element Sphere Replacement, Supporting Fluid & Gasket Renewal, Settle Time Calibration |
| Attendance SLA | Within 2 hours at JNPT/Mumbai; within 4 hours at outer anchorages; fly-away teams to all Indian ports |
| Spares Stocked in India | Genuine gyrospheres, pump assemblies, supporting fluids, centering pins, slip rings, step motor repeaters |
| Regulatory Standards | SOLAS Chapter V Regulation 19, IMO Resolution A.424(XI), ISO 8728 Marine Gyrocompass Standard |
6-Step Gyrocompass Annual Overhaul & Calibration Protocol
Our Class-approved technicians execute this standardized procedural workflow to ensure first-time compliance with attending Class surveyors and Indian Port State Control (PSC) inspectors:
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Pre-Overhaul Alarm & Settle Error Diagnosis
Check running hours, log operating voltage and current, inspect temperature alarms, and record settle error against celestial / dockside true azimuth.
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Power Down, Disassembly & Fluid Extraction
Safely isolate master gyro supply, remove outer casing, extract exhausted supporting fluid, and inspect gyrosphere casing for carbonization or physical wear.
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Sensitive Element & Gyrosphere Replacement
Install new factory-calibrated gyrosphere, replace upper and lower centering pins, renew container O-rings and hermetic gaskets.
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Supporting Fluid & Electrolyte Replenishment
Fill sphere container with precise volume of OEM supporting fluid and distilled electrolyte, ensuring total elimination of micro air bubbles.
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Follow-Up System Tuning & Settle-Time Verification
Power up gyro unit; monitor settle-time curve (approx. 3 hours); tune horizontal and vertical damping torque motors to guarantee true north alignment.
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Bridge Repeater & NMEA Heading Synchronization
Synchronize all bridge wing bearing repeaters, steering repeater, radar heading markers, ECDIS, and autopilot inputs to 0.1 degree accuracy.
See boarding and enquiry details for JNPA (JNPT / Nhava Sheva) or Mumbai Port and Ferry Wharf (Bhaucha Dhakka).
24/7 Port & Anchorage Attendance Across India
Seanav Marine provides rapid shore-based and offshore launch boat boarding across all 170+ Major and Minor Indian Ports, including:
Certified Equipment & Replacement Spares in Stock
Seanav Marine maintains bonded warehouse spare parts inventory across major Indian ports for immediate dispatch and installation during port calls:
Download Gyro Compass Maintenance Log & Settle Verification Sheet
Track your vessel's gyro performance and know when sphere renewal is statutory to prevent PSC detentions.