If you have on board internet access you will surely be aware of the
fact that lots of useless bits and bytes are being transmitted, and
that they come at a cost.

There's a nice and detailed article in Digital Ship's newsletter
looking at all the various possibilities for compression and
prevention techniques. Furthermore it discusses some (future)
developments of internet acces via satellite.

If you're interested, I've posted an abstract he
http://www.panbo.com/yae/archives/000458.html

Yme
http://www.panbo.com/yae/