If you're talking about posting underway, there are several
programs that would probably let you do it via SSB.

I have investigated several SSB options, but they seem slow and based on
such old technology. I know they have email, but was not sure if they would
work for News group posting like here. I was hoping there was some new
technology available that would allow me to download all the new messages in
this group, say...... while the 1st mate is on her wheel watch while we are
in the middle Of the Gulf of Mexico heading to Cancun for the winter. And
keep family and friends posted and maybe even see satellite images and
forecasts. Maybe by the time we are ready and able to cruise they will have
the technology ready for me.