On Tue, 21 Dec 2010 19:22:56 -0500, L G wrote:

It is much cheaper to buy an unlocked GSM phone, about $50 on the
internet. When you get to the Bahamas go to the nearest Batelco
office (they are everywhere) and buy a Bahamas SIM card for $13. Then
you buy prepaid minutes as needed, usually in $20 increments. Batelco
cell service is very good throughout the islands and costs a lot less
than $1.39/minute.

It doesn't work offshore.

He's not sailing offshore, just island to island.