The Port of Bridgetown (officially the Deep Water Harbour), (UN/LOCODE: BB BGI, Port Callsign: 8PB) is a seaport in Bridgetown on the southwest coast of Barbados. Situated at the North-Western end of Carlisle Bay, the harbour handles all of the country's international bulk ship-based trade and commerce. In addition to international-shipping the Deep Water Harbour is the port of entry for southern-Caribbean cruise ships. The port is one of three designated ports of entry in Barbados, along with the privately owned Port Saint Charles marina and the Sir Grantley Adams International Airport. The port's time zone is GMT −4, and it handles roughly 700,000 cruise passengers and 900,000 tonnes of containerised cargo per year.