If you don't need to hear a voice, you can use Sailmail or Winlink with your Ham license. All I have is an SSB with a Pactor modem and use Sailmail which seems to work quite well. The price of satellite comm is way out of my sailing budget range so I make-do with the HF radio which serves to get weatherfax maps as well.
I do have a pactor modem (came with the SSB) but do not currently have it hooked up. That could be an option, but then I need to use a computer on the boat- not somthing I really want to do. Plus I would miss the sound of her lovely voice when I am out on the lonely sea!