AIS 2.0 is the commercially used name, and VDES (VHF Data Exchange System) is the technical term, just like your mobile phone, it perhaps uses 4G, but the technical name is Long-Term Evolution (LTE).
AIS is a one-way digital exchange of identity, position, etc. It has been a global standard since 2001 (ITU-R M.1371-1) and has been a SOLAS requirement since 2001. AIS 2.0 (VDES) is a two-way digital exchange of data. It is a global standard from 2022 (ITU-R M.2092-1) and is about to become a SOLAS requirement, expected from 2026.
AIS 2.0 is designed to transfer data without an IP address. This allows digital communication to the bridge shipment as no IP address is equal to an unbreakable firewall. Remote log-in is simply not possible. The currently available satellite communication systems make use of an IP address when transferring data.
Sternula has more than 10 years of experience in developing and standardizing VDES technology. Our CTO is a chairman of IALA E-Nav WG3 and we are the co-founder of the VDES Alliance. Furthermore, Sternula is the first and only commercial satellite operator of AIS 2.0 (VDES).
Yes, Sternula offers global coverage. Our satellite is flying a polar orbit route and visits every place on Earth twice a day. In the future Sternula will have more satellites providing better and more frequent coverage.
The AIS 2.0 enables IMO e-Navigations strategy implementation plan to digitize 15 obligated services from the maritime authorities to the ships.
VDE-SAT is VDES transmitted through a satellite, such as Sternula-1.
VDE-TER is terrestrial VDES, transmitted by the ground stations on shore.
Using VDE-SAT, maritime authorities can provide their obligated services to ships in the full EEZ area. The VDES satellite provides a broad area coverage. VDES satellite can also cover areas beyond the range of terrestrial VDES, or where VDES infrastructure does not exist.
Yes, there are two options: either through line-of-sight direct communication or using a satellite connection.
No, however with a 30 times higher data rate than AIS, it will be possible to add a digital signature while transmitting the identity of a ship. This makes the information the sender is sending out trustworthy. The use of digital signature is a part of IALA guidline G1117-1 MCP. If interested in MCP, please contact us.
You need a AIS/VDES transceiver, designed and tested to IEC 61933-2 and future ITU-R M.2092-1 as applicable. We recommend installing the Sternula MMS Proxy as well.
No. The new AIS 2.0/VDES transceiver will consist of AIS/ASM and VDES/AIS 2.0. It will still be used alongside AIS as 3G and 4G or 4G and 5G are used alongside each other.
It depends on where in the world you are. Contact us for more information.
VDES frequency usage is illustrated according to M2092-2 of the ITU-R M.2092-1 recommendation document.
Can you transmit data from ship to shore using VDES?
Yes, you can transmit through either VDE-SAT or VDE-TER.
Data package limit to 100kB. Enough to send weather bulletins, ice charts, etc.
About 1000 km radius.
It depends on the latitude. See the 10-day predictions for your location here.
No, the available communication forms are text-based.
Yes, since the technology is designed without an IP address, however, it depends on the ECDIS provider and the data format S-100.
Yes. Sternula and CML have a cooperation through the VDES Alliance to integrate the equipment of CML to work with Sternula-1.
Our demonstration projects support the roaming of MMS traffic over mobile networks (3/4G), Saab R60 VDE-TER and Saab R6 VDE-TER and VDE-SAT.
In our cooperation with Saab R6, we target to demonstrate the virtual AtoN via VDE-SAT service as described in IALA G1117 in the future.
The ECDIS is already receiving data from the AIS over a NMEA interface (IEC 61162), and VDES data will also by output from the AIS unit using NMEA. Moreover, ECDISs are also expected to support MMS in the future, where the interface is known as MMTP. This interface will be available on the MMS Proxy.
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