Viking Grace

Securing gas distribution with real-time data


Viking Grace is the world’s first LNG powered passenger vessel that uses radio modems for data transferring. Strict time schedules in the passenger vessel transportation give zero tolerance for errors. Data transfer based on a private network ensures the functionality and provides stability that is required in the daily procedures of the shipping trade.


Green light to functionality

Viking Grace uses liquefied natural gas (LNG) as fuel. Using of LNG makes Grace one of the world’s greenest vessels. The LNG storage system LNGPacTM was delivered by Wärtsilä that also ensured the availability of the vital parameters for the bunkering protocol. The system included the bunkering station, LNG tank and tank room compartment, process skid, glycol-water heating unit and the control and monitoring system.

Dynatron delivered and installed the telemetry system that monitors the bunkering station. The system uses SATEL radio modems to transfer the data between Grace and the bunkering vessel Seagas. The data communication between the two ships works independently in delivering real-time information about the refueling process.

The tanks of Seagas have a capacity of up to 70 tons that can be transferred in just 60 minutes. This is also the turnaround time of Viking Grace while it is in port, as the vessel makes the 11-hour crossing between Finland’s west coast city of Turku and the Swedish capital Stockholm.


SATEL casestory Viking Grace


Data transfer in a private network

Radio modem based data transfer is extremely reliable and cost-effective. They operate in their own licensed frequencies and the network works independently from any operator network. The redundancy of the system provides maximum security to the data transfer.

Bunkering telemetry system uses SATELLINE radio modems and SATELLINK I/O units for data communication between Grace and the LNG bunkering vessel Seagas. SATEL radio modems transmit information about the gas flow, pressure and level measurements and provide the shutdown information in case of an emergency.