We have our own private channels where I work, but every other fishing boat that we board seems to be tuned into them. We are tending to use mobile phones a lot more now, but I know for a fact that at least one boat has equipment on board capable of scanning those too.
Anyway, I sometimes use it to listen to BBC radio, but not much else. It's fun though, yeah.
I can get CRI, Radio Japan, Radio South Korea, and that filth from Radio Havanna Cuba very clearly. If there are any stations that you want the frequencies for just let me know!