Yes, under the new 2025 maritime regulations in The Bahamas, having an AIS transponder Harbour Island is mandatory only for foreign pleasure vessels that are 50 feet or longer. These vessels must have a functioning AIS (Automatic Identification System) installed, turned on, and transmitting at all times—whether they are underway, anchored, or docked. Failure to comply may result in fines of up to $1,000, as outlined in Section 40B of the amended Port Authorities Act. The rule is part of the government’s broader effort to enhance maritime safety, visibility, and enforcement across Bahamian waters.

For smaller boats, the law is different. If your vessel is under 50 feet in length, you are not required to carry or use an AIS device to comply with the law when boating Harbour Island. While it remains optional, installing AIS can still be beneficial from a safety and navigation standpoint, especially in busy or unfamiliar waters. Many seasoned boaters recommend it even when not mandated, as it allows others to track your vessel in real time and improves situational awareness in crowded channels or poor weather.

Despite the exemption for smaller boats, it’s still crucial to follow all other boating requirements when docked, including having a valid cruising permit, clearing customs, and adhering to environmental and anchorage rules. For boaters of all sizes, staying informed about the updated requirements ensures smoother travel and helps avoid unexpected fines or enforcement issues upon arrival.

To sum up, vessels under 50 feet do not need an AIS transponder Harbour Island, but those 50 feet or longer must be equipped with an active system as of July 1, 2025. Make sure to verify your boat’s length and gear in advance, especially if you're crossing international waters to reach Harbour Island.