WHAT IS VSAT?
VSAT stands for Very Small Aperture Terminal. In simple terms, it’s a compact telecommunication station that sends and receives real-time data through satellites. The system works by transmitting signals to satellites orbiting the Earth, which then relay the data to various centers across the globe.
VSAT technology has completely transformed communication in the maritime sector. Earlier, once a vessel sailed away from shore, communication with the outside world was extremely limited or unavailable. Today, maritime VSAT systems enable vessels to remain connected wherever they operate across oceans, trade routes, or offshore locations.
This advancement offers high-speed internet, mobile phone connectivity, and real-time data monitoring. It has made life easier not just for the crew but also for passengers onboard. Ships can now place orders for supplies before reaching the next port, reducing downtime and helping maximize operational hours while navigating busy trade routes.
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DIFFERENT PURPOSES OF VSATS IN MARINE COMMUNICATION:
With maritime VSAT installed onboard, crews and passengers can enjoy uninterrupted internet connectivity, phone services, weather forecasts, and live operational reporting. Even important compliance documents can be prepared and submitted while the vessel remains at sea.
In maritime communication, narrowband data typically covers point-of-sale transactions like credit card processing, polling, RFID data, or SCADA systems. Broadband data, on the other hand, supports satellite internet access for remote locations, VoIP calls, and video transmissions.
Maritime VSAT services use both Ku-band and C-band frequencies. The latter operates between 4 – 8 GHz while the former ranges from 12 – 18 GHz. Both are used through satellites orbiting the Earth at GEO orbital locations. This requires steady antennas for accurate tracking due to its fluctuating movements as the vessel’s movements are always changing.
Maritime VSAT antennas typically range in size from 60 cm – 1.5 meters wide when used with Ku-band and 2.4 meters when used with C-band frequency transmissions. A stabilized VSAT antenna has a circular dome that is 2.4 meters or less in diameter.
Most VSAT antennas are around 75cm-1.2m long and data rates can vary from 4 kbit/s up to 16 Mbit/s. A remote maritime system consists of two units; Above Deck Unit and Below Deck Unit. The Above Deck Unit has the antenna and transceiver, which is usually placed outdoors – either inside a radome or outside – while the Below Deck Unit control will manage the antenna indoors
In many cases, bandwidth is shared among several vessels operating within the same network. While this arrangement supports essential communication requirements, heavy usage by multiple users can reduce speed and performance for high-data applications.
For vessels engaged in offshore operations, cruise tourism, ferry transport, and exploration activities, dependable and high-speed data communication is essential. Maritime VSAT ensures smooth transmission of large files, real-time coordination, and uninterrupted connectivity across oceans.
KEY TAKEAWAYS :
- Maritime operators worldwide are recognizing the growing impact of maritime VSAT and its role in enhancing profitability and operational performance.
- The data rates for this technology continue to rise, which means people will be able to watch videos and do other bandwidth-intensive business tasks.
- While current availability may be limited in some regions, ongoing innovation is expected to make marine VSAT services more affordable, compact, and easy to install in the near future.
- Maritime equipment manufacturers are designing smaller terminals and antennas which can improve operational efficiency.
- Maritime software developers are developing new software that will allow marine operators to use VSAT technology to have safe, more intelligent, and more profitable operations.
Blessed Marine Automation provides the latest and highest quality maritime technology. They offer a variety of satellite communication devices for different vessels around the world. Contact Blessed Marine to learn more about how their advanced technology can improve your existing service or transportation ships.