Key Takeaways

  • The P2T system provides low-latency voice communication over a vessel’s local Wi-Fi without requiring internet or cloud access.
  • The iOS and Android platform supports up to 1,000 users per vessel, priority transmissions, channel management, and activity logging.
  • P2T is designed to complement maritime VHF and GMDSS equipment, not replace established safety communications.

Seafy has launched P2T, a push-to-talk system that converts crew smartphones into voice handsets operating across a vessel’s onboard Wi-Fi network. The design gives departments a local communications layer that remains available when satellite connectivity, mobile coverage, or shore-based cloud services are unavailable.

That distinction matters at sea. Ship-to-shore bandwidth has expanded considerably, but connectivity can still vary with equipment, coverage, weather conditions, service plans, and vessel location. Routine communication between the bridge, engine room, deck teams, housekeeping, security, and other departments should not have to travel through a satellite link simply to cross the same vessel.

P2T instead relies on a local server installed onboard. According to launch coverage from Hellenic Shipping News, users can initiate voice transmission in under 100 milliseconds. The system supports iOS and Android devices, with local administration for users and channels, priority transmissions, activity logging, and deployments of up to 1,000 users on one vessel.

In practical terms, a crew member selects a channel and presses a software talk button, approximating the familiar workflow of a handheld radio. Department-based channels can separate operational conversations, while priority controls can give urgent traffic precedence. Activity logs also provide administrators with a record of system use, potentially helping with operational reviews and communication policy enforcement.

Smartphone push-to-talk is not simply a radio replacement exercise. Smartphones already support messaging, documentation, workflow applications, maintenance systems, and other digital tasks. Adding local voice communication can reduce the number of devices carried by some crew members and place another operational function on hardware they already understand. Yet vessel operators will still need to consider battery life, protective cases, noise levels, device ownership, Wi-Fi coverage, access controls, and charging practices.

P2T also occupies a different role from maritime safety radio. The developer positions the system as a complement to VHF and the IMO’s Global Maritime Distress and Safety System, or GMDSS. Those established systems remain the maritime safety baseline. A smartphone application operating over local Wi-Fi does not assume their distress, calling, and regulatory functions.

Telecommunications standards bodies are actively addressing these same maritime requirements. Work around Mission Critical Push-to-Talk and the wider MCX family of services continues to bring group voice, priority handling, and related capabilities into cellular standards. Coverage of MCX developments by The 3G4G Blog reflects continued industry attention to standardized mission-critical communications, including their evolution across newer networks.

Operational scale dictates deployment configurations. A small workboat has different requirements from a cruise ship, large ferry, offshore installation, or commercial vessel with several departments and hundreds of people onboard. Seafy’s support for up to 1,000 users suggests that P2T is designed with larger and organizationally complex environments in mind.

Meanwhile, ship connectivity is becoming more layered. Operators increasingly combine onboard Wi-Fi and local applications with satellite services such as Starlink Maritime and Inmarsat Fleet. An Informed Clearly review of maritime satellite connectivity describes the growing role of bandwidth options and satellite adoption across the sector. The architecture fits that hybrid pattern: voice stays local for onboard operations, while optional fleet or shore connectivity can be used when available.

There are competitive reference points. Motorola Solutions, Hytera, and Airbus have established positions in push-to-talk and critical communications, although maritime deployments bring their own environmental and regulatory constraints. The primary differentiator is the vessel-local architecture and explicit focus on existing onboard Wi-Fi.

For ship operators, the evaluation will come down to reliability in real operating conditions. Wi-Fi coverage below deck, device durability, cybersecurity controls, crew training, channel design, and integration with emergency procedures will shape outcomes. If those elements are handled well, P2T could give vessels a practical middle layer between informal smartphone communication and dedicated safety radio systems.