San Marino MMSI Application: Requirements and Steps

A San Marino MMSI is not applied for on its own form. It comes with the Ship Radio Station Licence, which the San Marino Ship Register handles as part of vessel registration. You complete the radio licence application (Form 03) with your vessel and equipment details. You submit it with the registration forms, and the licence names your MMSI and call sign. This guide covers who can apply, what the form asks for, what it costs, and what you must do after the licence is issued.

TL;DR

• The MMSI and the San Marino radio licence are one process. The Ship Radio Station Licence application is part of the registration submission, not a separate step afterward.
• Applicants must be a San Marino company, a San Marino resident, or a non-resident (person or company) acting through an appointed San Marino Resident Agent. Fishing vessels are not accepted.
• Form 03 asks for owner details, vessel name, port of registry, call sign, MMSI, dimensions and a full list of radio equipment with model and serial numbers.
• The licence must be re-issued when radio equipment is replaced or added, and when ownership changes.
• Fees are set by the Authority and invoiced. Unpaid invoices can lead to deregistration, so keep the account current.

Índice

• What a San Marino MMSI is and how it ties to the radio licence
• Who can apply
• What the radio licence requirements look like
• How to apply, step by step
• Fees, timing and validity
• Keeping the licence valid
• Perspective: what we see in daily practice
• Let us handle the filing
• Common mistakes to avoid
• Perguntas frequentes
• Fontes

What a San Marino MMSI is and how it ties to the radio licence

An MMSI (Maritime Mobile Service Identity) is a nine-digit identifier assigned under the International Telecommunication Union system and issued by the flag state of the vessel. You program it into your DSC-capable VHF radio. Your AIS transponder and EPIRB use it too. Coast stations, other vessels and rescue centers use it to identify you and, in distress, to know who is calling.

Because the number is issued by the flag state, a San Marino MMSI belongs to a San Marino-flagged vessel. You cannot apply for one for a boat that is not on the San Marino register. That is why the application sits inside the registration paperwork. The San Marino Ship Register’s vessel registration procedure says the submission includes a completed Ship Radio Station Licence application, alongside the vessel registration forms and, where applicable, the resident agent forms.

In practice, three things travel together:

1. The registration of the vessel on the San Marino register.
2. The Ship Radio Station Licence, which authorizes your radio equipment to operate.
3. The MMSI and call sign recorded on that licence.

If you are searching for a standalone number to put in a radio, you will find that the licence is the document that matters. The number is the identifier printed on it.

Who can apply

O 2026 SMSR Registration Guidelines open registration and licensing to three kinds of applicant:

• Companies incorporated in San Marino.
• Individuals resident in San Marino.
• Non-resident natural or legal persons who have appointed a San Marino Resident Agent.

For most foreign owners, including US owners, the third route is the practical one. You do not need to move to San Marino. You appoint a resident agent, who is named in the resident agent forms filed with the application.

The same guidelines say the register serves merchant ships, commercial yachts and private yachts, and that fishing vessels are not accepted. If your vessel is a working fishing boat, a different flag is the answer.

If you plan to hold the yacht in a company, ownership structure matters before you file. We set up UK and US companies for owners, and we explain the structures in our guide for US owners registering under a foreign flag. Whether the yacht is private or commercial also affects which rules and forms apply. Our article on private versus commercial yacht registration explains that use, not payment, decides the category.

What the radio licence requirements look like

There is no separate US-style MMSI form. The requirements are the content of Form 03, the Ship Radio Station Licence application. The version published by the San Marino Maritime Authority, revised 1 May 2021, asks for:

• The owner’s details.
• The vessel name and port of registry.
• The call sign and MMSI.
• The vessel’s dimensions.
• The radio equipment on board.

The equipment section is where applicants most often stumble. The form records VHF portable and fixed radios, EPIRB and other equipment. For each item it asks for the model, serial number, power and emission class. Gather this before you start. Walk the boat with a notepad, or photograph each data plate:

The Administration may also request additional supporting documents or clarifications during the registration process. So a file that is complete and consistent the first time moves faster than one that triggers follow-up questions.

Documents that are not in English or Italian

Bills of sale, previous registry deletion certificates and builder’s certificates often arrive in other languages. Check our note on which yacht documents need translation before you submit, so that a translation request does not stall the file.

Call signs and AIS

The call sign and MMSI appear on Form 03 next to each other, so the licence is the single record that ties your identity codes to the vessel. If you carry AIS, list it with your other equipment, and program it with the MMSI from the licence, not a number from another flag. A transponder set up with the wrong identifier is the most common cause of a vessel showing as unknown on tracking screens.

How to apply, step by step

The sequence below follows the structure of the San Marino Ship Register’s procedure. Check the register’s current guidelines page for the latest forms before you file.

1. Decide on the ownership route. Choose a San Marino company, San Marino residency, or a non-resident owner with a Resident Agent. Most foreign owners take the agent route.
2. Collect the vessel file. Proof of ownership, previous registry status, technical details and dimensions.
3. Compile the equipment list. Use the table above. Make sure serial numbers match the data plates.
4. Complete the registration forms and Form 03. The radio licence application goes in the same submission as the vessel registration forms, plus the resident agent forms if you use an agent.
5. Submit to the San Marino Ship Register. Answer any requests from the Administration for further documents.
6. Pay the invoices. Fees are issued by the register and must be paid.
7. Receive the licence with your MMSI and call sign. Program the radio, AIS and EPIRB, and keep the licence on board.

The forms are in English and Italian. Details such as names and addresses must match your ownership documents exactly. A mismatched spelling between the bill of sale and the application is a simple way to lose a week.

Fees, timing and validity

The law gives the Authority the power to set charges. Law no. 120 of 2 August 2019 states that fees for certificates and other services are determined by the Authority. For that reason, treat any figure on a third-party page as a snapshot, and confirm the official tariff with the register at the time of filing.

One rule is worth knowing from the start. Under the 2026 Registration Guidelines, failure to pay any issued invoice is grounds for ex officio deregistration, and the deletion certificate is issued only once all outstanding amounts are paid. If you ever sell the boat or move it to another flag, an unpaid balance will block the exit.

Our published price for San Marino registration with us runs from 290 EUR to 2,990 EUR, one-off, depending on the vessel and the package you choose. The MMSI Radio License is part of our services, but we do not publish a separate price for it. We quote it when we see the vessel. We do not publish a processing time for the radio licence on its own. Our provisional registration is typically 1 to 7 days, and the licence follows the same file.

Keeping the licence valid

The licence is not a one-time paper you can forget. Form 03 states that it ceases to be valid when equipment is replaced or added. It also says it must be re-issued if ownership of the unit changes.

That gives you a short list of triggers:

• New VHF, EPIRB or AIS. Replacing a fixed radio after a refit means the licence no longer matches the boat. Re-issue it.
• Added equipment. A new handheld or a second EPIRB counts as added equipment.
• Sale of the yacht. The new owner needs a licence in their own name. Plan the ownership transfer and the radio licence together. Our Transfer of Ownership service is 630 EUR, one-off, and it covers the registry side of that change.
• Leaving the flag. The deletion certificate, 220 EUR one-off with us, is issued only after all outstanding amounts are paid.

A practical habit: keep a one-page equipment log on board with dates, models and serial numbers. When a refit happens, the log is what you hand over for the re-issue.

Perspective: what we see in daily practice

We handle registrations across six major registries every week, and the radio licence is where owners most often lose time, not the registration itself. The reasons are consistent. Equipment lists are incomplete. Serial numbers are copied from memory. Owners assume the MMSI is something they can pick up later, separately, after the boat is flagged.

With San Marino, the order is the opposite. The radio licence application belongs in the first submission. When it arrives complete, with the equipment table filled from the data plates, the file stays clean and the provisional registration is not held up by follow-up questions.

Our advice to US owners in particular: decide on ownership first, then the flag, then the radio. If you are weighing San Marino against Poland, look at the whole five-year cost, not the first invoice. We have set that out in our San Marino versus Poland comparison. Poland has its own radio route, covered in our guide to the Poland radio license. Malta has one too, in our guide to the Malta radio license for yachts. The right answer depends on where the boat sails and who owns it, not on which form looks shortest.

— VesselFlag

Let us handle the filing

If you want the registration and the radio licence filed together, we prepare the vessel file, the equipment list, the resident agent paperwork and the Form 03 application, and we answer the register’s follow-up requests. San Marino registration with us costs from 290 EUR to 2,990 EUR, one-off. If you need a company to own the yacht, a UK LTD costs 349 EUR and a USA LLC 499 EUR, both one-off. See the details on our San Marino yacht registration page.

If you also want insurance, transport or interior work for the same yacht, those are listed on our services page.

Common mistakes to avoid

• Filing the vessel first and the radio later. The licence application belongs in the registration submission.
• Copying serial numbers from invoices. Use the data plate. Invoices often show a different or partial number.
• Forgetting handhelds. Portable VHF radios are listed on the form.
• Programming the wrong MMSI. Use only the number on the San Marino licence for DSC, AIS and EPIRB registration.
• Skipping the re-issue. A refit or sale without a re-issued licence leaves you carrying a licence that, by its own terms, has stopped being valid.
• Ignoring invoices. Unpaid invoices are grounds for deregistration.

Perguntas frequentes

Can I get a San Marino MMSI without registering my boat in San Marino?

No. The MMSI is issued through the flag state and recorded on the Ship Radio Station Licence, and the licence application is part of the vessel registration submission. A boat on another flag uses that flag’s number.

Do I need to live in San Marino to apply?

No. A non-resident individual or company can apply by appointing a San Marino Resident Agent. The alternatives are a San Marino company or personal residency, but most foreign owners choose the agent.

Can I register a fishing vessel?

No. The San Marino Ship Register serves merchant ships, commercial yachts and private yachts. Fishing vessels are explicitly not accepted.

What happens if I change my radio or sell the boat?

The licence must be re-issued. Form 03 says it stops being valid when equipment is replaced or added, and that a change of ownership requires re-issue. Update the equipment log and apply before you go back to sea.

How much does the radio licence cost?

The Authority sets the fees for certificates and services, so confirm the current tariff with the register. With us, the radio licence is part of the registration service, and we quote it for your vessel.

Fontes

• San Marino Ship Register: Vessel Registration Application Procedure
• SMMAR 2025-ADM-005 Rev.01, Registration Guidelines
• Form 03, Ship Radio Station Licence application
• Law no. 120 of 2 August 2019, Ship Register
• Maritime Mobile Service Identity

Recomendado

• Licença de rádio para iates em Malta: evite atrasos com formulários, registre-se no MMSI.