Not in the Bahama.  Here you go:

http://www.attwireless.com/business/plans/international/worldconnect_ng.jhtml

GSM went live in the Bahamas in Feb. 2004 so it might come anytime. By the
way, there isn't any information on the GSM system on their website (
http://www.btcbahamas.com/main_flash.html), I'm relying on gsmworld.com's
report..

ATT used to have a roaming agreement (analog) with Batelco, but pulled it
because of rampant fraud.  Hopefully, GSM's clone resistance will force a
reconsideration.  Here is a reprint of an interesting article:

Dining at the Captain's Table? [Please Turn Off Your Cellphone; By CARL
BIALIK THE WALL STREET JOURNAL ONLINE;  March 17, 2004; Page D14]

The next frontier for cellphone service: international waters.
AT&T Wireless Services Inc. has formed a joint venture with Maritime
Telecommunications Network Inc. to sell wireless service to cruise
operators.
The upshot: By later this year, vacationers no longer may have to pay hefty
fees to use the ship's phones -- which typically range from $4 to $15 a
minute -- or wait for ports of call to use their cellphones. Instead, they
may be able to use their cellphones while at sea, through onboard hardware
that would connect calls through satellites. The service will work with AT&T
Wireless phones, and may also work with other carriers' handsets using the
cellphone standard called global system for mobile communications, or GSM,
which is common in Europe and is used by U.S. carriers Cingular Wireless and
T-Mobile USA.
Calls would work through existing roaming agreements the carrier has struck
and will be included in monthly bills. AT&T Wireless and MTN said call
prices hadn't been set but may be similar to prices at the next landing
port. For instance, a call from popular Caribbean destinations is about
$1.69 a minute.
If cruise operators come on board, the high seas will become the latest
venue for cellphone access, joining highways, trains and even planes:
Verizon Wireless introduced a service earlier this month that forwards calls
to seatback phones.

Ray Goldenberg, a cruise travel agent in Santa Barbara, Calif., said many of
his customers would welcome the option to place calls. He said that on
typical cruises, crew members and travelers rush to deck when the ship nears
land to check if their phones have connections.
Of course, the service isn't good news for people looking to escape. Peter
Greenberg, a 44-year-old corporate accountant in Boston, feels certain
fellow travelers would fill ships with chatter. "I see it at the beach, I
see it at the golf course," he says of the gabbers. "I know they would be
doing it."
Terms of the joint venture weren't disclosed. The companies didn't announce
any takers for the technology among cruise lines, which have to agree to
share in the cost of installing the service. "We're in advanced
discussions," with some cruise operators, said David Kagan, chief executive
of MTN, of Miramar, Fla.
This is the first such cruise service from a big U.S. wireless carrier.
Interwave Communications International Ltd. of Mountain View, Calif., says
it has supplied cellphone technology to overseas wireless carriers whose
service has been available on some cruise lines for two years.
AT&T Wireless, of Redmond, Wash., last month agreed to be acquired by
Cingular Wireless for $41 billion.

Stu

Now you can use your GSM phone on the cruise ship.

http://www.cellular-news.com/story/10853.shtml

Watch those charges!

Hi,

Ok i live in the Bahamas and i have a gsm nokia 6200 most all nokia will work It is using GSM 1900 mhz, TDMA was the ols system they are fazing it out but maybe half the population still have TDMA. But i am not sure about roaming I believe we can roam if we go to the USA so maybe you can here also.(when You come to the Bahamas)

Hope This helped!