I only just got one (in Gib) so this isn´t going to help much. It is fussy about direction so I don´t think it would be much good underway. They claim to be developing a unidir antenna.

The med forcasts are from thre US and not as detailed as Navtex eg there is no Straigt of gib forcast. However they come every hour. It looks like it will go subscription at some point, don´t know how much.

It works fine at anchor if not rolly. BBC world news is worth having.