Traditionally, many commercial vessels have used L-band as the main means of communication with the outside world.
While this system has been a tried and tested form of communication over many years, the mindset of owners has been to limit its usage due to the fact that the business model was built on a ‘pay-as-you-use’ system.
However, as vessels are becoming more sophisticated with higher bandwidth demands to transfer increasingly larger amounts of data between ship and shore, ship owners are...
http://www.sashippingnews.com/2020/07/31/maritime-connectivity-vsat-vs-l-band/