Doing a nice project for vessels communication. I was looking into different problems, solutions, equipment sets and so on and finally I have finished with one installation with Thrane & Thrane Fleet 33 for satellite and Ericsson GSM modem along side.
The idea is that the vessel spends most of the time near the shore in the coverage of GSM and from time to time crosses the Mediterranean see. So when vessel is nearby, it uses usual dialup (speed 9.6 at a cost of CYP ~0.04) and when it is out, it is using Fleet (speed 9.6 at a cost of CYP ~0.60).
Everyone seems to be happy now. I really enjoyed doing this project since I learned a lot of stuff about communication on vessels as well as about vessels as a whole.