Radio Survey & GMDSS Services
Annual radio surveys, GMDSS inspections and shore-based EPIRB & SART testing, by a DG Shipping approved radio surveyor, with certificates accepted by class, flag and PSC.
GMDSS compliance without the drama
Your GMDSS installation is the vessel's lifeline, and one of the most inspected systems on board. Our approved radio surveyors carry out annual radio surveys and equipment testing to SOLAS Chapter IV and IMO requirements, using certified test equipment and issuing documentation that passes scrutiny the first time.
Because we hold DG Shipping approval as a radio surveyor and service station, one visit can combine the survey with rectification, saving a second attendance if defects are found.
Certified Engineers
What this service includes
- Annual radio survey of the complete GMDSS installation
- MF/HF & VHF DSC radio testing and performance verification
- EPIRB annual testing per IMO MSC.1/Circ.1039, beacon body & HRU inspection, battery validity, 406 MHz self-test & transmission, GPS position encoding, beacon ID & registration check
- SART inspection, battery validity, X-band radar response test, signal transmission verification
- NAVTEX, two-way VHF and AIS-SART checks
- Reserve source of energy (battery) capacity testing
- Antenna and installation condition inspection
- Shore-based maintenance (SBM) agreements
- Survey report & certificates for class, flag and PSC
Available at all Indian ports: Jamnagar, Sikka, Vadinar, Kandla, Mundra, Alang, Pipavav, Hazira, Mumbai, JNPT, Goa, Kochi, Chennai, Visakhapatnam, Kolkata and more, and internationally on request.
Our process
Share vessel details
Send vessel name, IMO, flag, port and ETA. We confirm surveyor availability and quote within hours.
Survey & testing on board
Our surveyor tests every GMDSS component with calibrated instruments and documents as-found conditions.
Rectify on the spot
As an approved service station we can repair or replace defective items during the same attendance.
Certificates issued
You receive the survey report and test certificates, formatted for class, flag and PSC files.
Why Azimuth for this job?
- DG Shipping & IRS approved service provider & radio surveyor
- Factory-trained, certified service engineers
- Genuine / OEM parts with warranty support
- Detailed service reports accepted by class & flag
- 24/7 mobilisation across Gujarat ports & Alang
- Transparent, competitive quotations
Answers, straight from our surveyors
Need a surveyor or service engineer on board?
Call the duty engineer any time, or send your vessel details now. You get a clear scope and price in hours, and an engineer at any Indian port, from Kandla and Mundra to Mumbai, Chennai, Kochi, Visakhapatnam and Kolkata. International attendance on request.
You may also need

Navcom Supply & Retrofit
Supply, installation and retrofit of navigation & communication equipment, new, refurbished and obsolete, with OEM-backed engineering.
Learn more
Gyro Compass Repair & Overhaul
Complete overhaul of Tokyo Keiki, Sperry, Anschütz and Yokogawa gyro compasses, gyrosphere service, calibration and sea-trial support.
Learn more
Magnetic Compass Adjustment
Compass swinging, deviation error correction, deviation card preparation and IMO-compliant certification at all Gujarat ports.
Learn more