http://www.bahamas-travel.org/bahama-cruise-ships/
Are there any cruise line phones?
Will I be able to make calls from the Bahamas to the U.S., while in the boat? I have no plan international service, and I wondered if I were to buy a phone / business card I will be able to use it on the boat?
To call from the boat might be called directly from the cabin phone. (There is no such thing as calling cards are working there, because the call is going through a satellite) Prices are between 12-15 U.S. $ per minute – so this is an expensive place to call. Once could reach the Bahamas by local phone cards and use them public phone in the Bahamas. But you can not use these or other phone cards while onboard a ship.
Boarding the Carnival Cruise Ship to Bahamas