February 12, 2026 — Endangered North Atlantic right whales live in heavily trafficked waters along the U.S. East Coast. Their habitat often overlaps with shipping lanes and port and harbor entrances, which puts them at high risk for vessel strikes—a primary threat to the species. Collisions with large whales can also result in significant and costly damage to boats and injury to passengers. Now, NOAA and partners are using an existing maritime safety technology in a new way to reduce the risk of vessel strikes.
The Automatic Identification System transmits the location, speed, and other characteristics of vessels in real time for navigation safety purposes. All commercial vessels 65 feet or longer are required to carry AIS devices onboard. Together with our partners, we are building a speed limit alert network powered by AIS technology that delivers timely text messages to vessels traveling within important right whale habitats.
Most vessels 65 feet or longer are required by federal law to travel at 10 knots or less in designated locations—called Seasonal Management Areas—at certain times of the year. With this real-time messaging network, shore-based AIS transceiver stations can detect vessel speeds within Seasonal Management Areas. If a regulated vessel is traveling faster than 10 knots, it will receive an alert.