Marine Communication Regulations for Professional Vessels: How Starlink Helps You Comply

Connectivity on professional vessels isn’t just about comfort or efficiency — in many cases it’s a legal obligation with serious consequences if not met. This guide explains the main regulatory requirements and how Starlink fits — and doesn’t fit — into their compliance.

The International Regulatory Framework

Communications on professional vessels are governed by a set of international, EU and UK regulations:

SOLAS (Safety of Life at Sea)

The IMO SOLAS Convention establishes safety requirements for passenger and cargo vessels. In communications, it requires radio systems including:

• GMDSS (Global Maritime Distress and Safety System)
• VHF radio with DSC (Digital Selective Calling)
• EPIRB (Emergency Position Indicating Radio Beacon)
• SART (Search and Rescue Transponder)
• In areas A3 (open ocean) and A4 (polar): additional equipment (INMARSAT C, MF/HF)

Starlink and SOLAS: Starlink does NOT replace any SOLAS equipment. It is a complementary data and communications system, not a safety system approved for emergencies.

GMDSS (Global Maritime Distress and Safety System)

GMDSS divides the oceans into four zones (A1-A4) with specific equipment requirements:

Can Starlink complement GMDSS? Starlink is an excellent communications system for normal operations in all GMDSS zones. However, emergency systems (EPIRB, SART, VHF radio) are mandatory and irreplaceable: they work without the vessel’s electrical supply, are recognised by international SAR systems and operate on globally reserved frequencies.

VMS — Vessel Monitoring System (Professional Fishing)

VMS is mandatory for EU fishing vessels under Regulation EC 1224/2009, and the UK has equivalent requirements post-Brexit:

• Mandatory: all vessels >12 metres LOA
• Transmission frequency: minimum every 2 hours (hourly in some monitoring contexts)
• Data transmitted: position, speed, heading, activity
• Certification: the VMS system must be certified and approved by the competent authority

Starlink and VMS: Starlink is not a certified VMS system. Certified VMS systems in the UK and EU are specific devices with official certification (typically based on Iridium or INMARSAT C). However, Starlink can:

• Provide additional connectivity to VMS devices that also support IP communications
• Allow submission of the electronic fishing logbook (ERS) via its connection
• Complement the VMS with operational communications, weather routing and crew welfare

Important: Starlink cannot replace the certified VMS device on your vessel. Both systems coexist.

AIS — Automatic Identification System

AIS automatically transmits the vessel’s identity, position, speed and heading:

• Class A (mandatory): SOLAS vessels, ferries, fishing vessels >300 GT
• Class B (recommended): recreational craft and smaller fishing vessels

AIS operates on VHF and doesn’t depend on Starlink to function. However, Starlink enables:

• Sending AIS data to online platforms like MarineTraffic or VesselFinder (via NMEA multiplexer integration)
• Receiving AIS data from other vessels via online platforms (useful in areas with light traffic and long distances)

Electronic Fishing Logbook (ERS/e-logbook)

EU regulations have required electronic fishing logbooks for vessels >10 metres since 2010 (UK has equivalent post-Brexit requirements):

• Recording of catches, gear used, fishing areas
• Transmission to the competent authority (MMO in England, Marine Scotland, DAERA in Northern Ireland)
• Compliance with IUU fishing regulations

Starlink and ERS: Starlink provides the connectivity needed for ERS software to operate with real-time transmission. This is one of the most valued applications by fishing skippers: the ERS can be submitted directly from the fishing grounds without waiting to reach port.

MLC — Maritime Labour Convention (Crew Welfare)

The ILO Maritime Labour Convention 2006 (MLC 2006) establishes minimum working condition standards on vessels. On communications, it establishes crew rights to:

• Communicate with family at reasonable cost
• Access news and information
• Reasonable leisure time

Starlink and MLC: Starlink directly facilitates compliance with these obligations. Vessel owners who install Starlink can provide crew with:

• Personal internet access (separate crew usage plan)
• Video calls with family
• Streaming entertainment

Several UK vessel owners use this as a crew retention argument.

ISM Code and SMS (Safety Management System)

The International Safety Management (ISM) Code requires a Safety Management System (SMS) for vessels in international trade. Communication is an integral part of the SMS:

• Accident and incident reporting
• Procedure updates
• Contact with the company and DPA (Designated Person Ashore)

Starlink significantly improves the quality of these communications, particularly for vessels in international trade.

Summary: What Starlink Can and Cannot Replace

Frequently Asked Questions

Have questions about integrating Starlink with your professional vessel’s regulatory requirements? Contact us for an analysis specific to your situation.