I use ZyGrib for GRIB viewing as well and frequently use its GRIB download feature ashore, but I wouldn't recommend using the GRIB download feature while on handheld satphone using Iridium's internet
connection utility (Direct Internet
3.0), which sounds like your your plan.
Iridum's Direct Internet 3.0 works pretty poorly for several reasons:
- Low bandwidth with handheld satphones: forget about trying to load any internet page (even google
.com), even if you adjust your browser settings for text-only
- No firewall to limit your computer's bandwith use: unless you've manually turned updating off on all your software
, your software
will hog the limited Iridium bandwidth available to check for updates, new anti-virus definitions, etc.
I have in fact used DI 3.0 once to download GRIBs offshore
via ZyGrib, just to test that it works (it does), but because of the constraints above I wouldn't recommend it.
Instead, as the previous posters have mentioned, email is your best bet for GRIB downloads (via Saildocs's automated email server), and it is also nice as it allows some occasional communication with friends/family ashore, emails to marinas
The reason email works better is that satphone-dedicated email software maximizes bandwidth via compression
, and also establishes a firewalled connection to the email server (meaning no other internet traffic takes place).
If you search past threads, you'll find lots of discussion on satphone email software options. Here's a non-comprehensive list, in my best-guess order of popularity (based on forum discussions):
- Global Marine Networks (GMN): XGate
- MailaSail: Teleport-it / Express Mail (maybe more popular in UK)
- Vizada: Skyfile Mail
I personally like Vizada's Skyfile Mail because it's free + simple, and UUplus because it's pretty affordable and equally simple. The other options tend to be more expensive as they have more functionality on top of basic email (e.g. blog updating, etc), and more tech support (e.g. GMN).
Keep us posted with as you continue your research
, as it sounds like you may end up with a different compromise vs. most users, which is always interesting.