What is an MMSI License?
A Maritime Mobile Service Identity (MMSI) is a unique 9-digit number assigned to your vessel for use with Digital Selective Calling (DSC) radios and Automatic Identification System (AIS) equipment. This critical safety identifier enables coast guard and search and rescue services to quickly identify and locate vessels in distress.
The MMSI number serves as your vessel’s digital fingerprint in the Global Maritime Distress and Safety System (GMDSS), ensuring rapid emergency response when every second counts. Required for international voyages and recommended for all vessels with DSC-capable VHF radios.
MMSI Registration Requirements
Who Needs an MMSI License?
- Commercial Vessels: All commercial vessels operating in US waters or internationally
- Recreational Boats: Vessels traveling to foreign ports or communicating internationally
- DSC Radio Users: Any vessel equipped with DSC-capable VHF marine radios
- AIS Equipment: Boats using Automatic Identification System transponders
- EPIRB/PLB Users: Vessels with Emergency Position Indicating Radio Beacons
Required Documentation
- Valid vessel registration or documentation number
- Proof of vessel ownership (Bill of Sale, Title, or Registration)
- Owner’s identification (Driver’s License or Passport)
- Vessel specifications (Length, tonnage, call sign if applicable)
- Emergency contact information
How to Apply for MMSI License - Step by Step
Step 1: Determine Your MMSI Type
Choose between FCC Ship Station License (for international travel) or recreational MMSI (US waters only). International travelers must obtain FCC license.
Step 2: Gather Required Documents
Collect vessel registration, proof of ownership, and identification documents. Ensure all information matches exactly.
Step 3: Complete Online Application
Access the FCC Universal Licensing System (ULS) or authorized provider’s portal. Enter vessel details, owner information, and emergency contacts.
Step 4: Pay License Fee
Submit payment via credit card or electronic check. Please send us an email for cost depend on registered juristiction
Step 5: Receive MMSI Assignment
Your unique 9-digit MMSI number will be issued within 24-48 hours for FCC licenses to 8 weeks for Polish licence, immediately for recreational numbers.
Step 6: Program Your Equipment
Enter MMSI into all DSC radios, AIS transponders, and EPIRBs. Test equipment to ensure proper functioning.
MMSI License Costs and Fees
Poland Ship Station License with MMSI
- Initial Application: $250
- Validity Period: 10 years
- Renewal Fee: $250
- Modification/Amendment: $80
- Duplicate License: $70
Dutch Ship Station License with MMSI
- Initial Application: $230
- Validity Period: 1 year
- Annual Fee: $75
- Modification/Amendment: $80
- Duplicate License: $70
UK Ship Station License with MMSI
- Initial Application: $210
- Validity Period: 10 year
- Renewal Fee: $210
- Modification/Amendment: $80
- Duplicate License: $70
International MMSI Requirements FoR FCC
Vessels traveling internationally or communicating with foreign ports must obtain an FCC Ship Station License with MMSI assignment. This ensures compliance with International Maritime Organization (IMO) regulations and enables worldwide emergency response coordination.
Countries Requiring MMSI for Entry:
- Canada – All vessels with VHF radios
- Mexico – Required for temporary import permits
- Bahamas – Mandatory for cruising permits
- Caribbean Nations – Most require MMSI for port entry
- European Union – MMSI required for all visiting vessels
MMSI Programming and Equipment Setup
DSC VHF Radio Programming
- Access radio’s MMSI menu (usually in Settings or DSC Setup)
- Enter your 9-digit MMSI number carefully
- Confirm entry (most radios require double confirmation)
- Test with DSC position request or test call
AIS Transponder Configuration
- Connect transponder to computer via USB or serial port
- Use manufacturer’s programming software
- Enter MMSI, vessel name, call sign, and dimensions
- Save configuration and verify transmission
EPIRB/PLB Registration
- Register beacon at beaconregistration.noaa.gov
- Include MMSI number in registration
- Program MMSI into beacon if user-programmable
- Test beacon using self-test function only
MMSI Database and Verification
Your MMSI registration is reported to multiple international databases for search and rescue coordination:
Primary Databases:
- ITU MARS Database: International Telecommunication Union’s Maritime mobile Access and Retrieval System
- USCG PSIX: US Coast Guard Port State Information Exchange
- AMVER System: Automated Mutual-Assistance Vessel Rescue System
- National SAR Database: Search and Rescue coordination centers worldwide
Verify your MMSI listing in these databases 48-72 hours after registration to ensure proper emergency response capability.
Renewal and Updates
When to Update Your MMSI Registration:
- Change of vessel ownership
- Change of vessel name or home port
- Updated emergency contact information
- Change of address or phone number
- Installation of new communication equipment
- Before license expiration (FCC licenses expire after 10 years)
Important: Outdated MMSI information can delay emergency response. Update your registration within 30 days of any changes.
Frequently Asked Questions About MMSI License
Do I need an MMSI if I only boat in local waters?
While not legally required for domestic boating, an MMSI significantly enhances safety by enabling DSC emergency features. The Coast Guard strongly recommends MMSI registration for all vessels with DSC-capable radios, regardless of operating area.
Can I use my US MMSI number in other countries?
Yes, if you have an FCC-issued MMSI with Ship Station License. Recreational MMSI numbers (from BoatUS, Sea Tow, etc.) are only valid in US waters and won’t be recognized internationally.
How long does MMSI registration take?
FCC Ship Station License with MMSI: 24-48 hours for online applications. Recreational MMSI from authorized providers: Immediate upon completion of online registration.
Can I transfer my MMSI to a new boat?
No, MMSI numbers are vessel-specific and cannot be transferred. When you purchase a new vessel, you must apply for a new MMSI and cancel the old vessel’s registration.
What happens if I don’t update my MMSI information?
Outdated information can seriously delay search and rescue operations. The Coast Guard may be unable to contact emergency contacts or may search for your vessel in the wrong location.
Is MMSI the same as vessel documentation number?
No, they are different. MMSI is a 9-digit radio identifier for emergency communications. Vessel documentation is a national registration system for vessel ownership and nationality.
Can I have multiple MMSI numbers?
Each vessel should have only one MMSI number. If you own multiple vessels, each requires its own unique MMSI. Using the same MMSI on multiple vessels is prohibited and dangerous.
Do I need a radio license to get an MMSI?
For international travel, yes – you need an FCC Ship Station License which includes your MMSI. For US waters only, no radio license is required, just MMSI registration through an authorized provider.