Port Alert
RI / Southern Massachusetts
March 01, 2026
Notices
Right Whale Slow Zone Extension: SW of Nantucket, MA
Effective through March 15
On February 28, 2026, the New England Aquarium aerial survey team redetected the presence of right whales southwest of Nantucket, MA. The right whale Slow Zone is in effect through March 15, 2026.
As a reminder, four additional Slow Zones are also currently in effect in the Northeast/Mid-Atlantic region. Locations and effective dates are listed below. There are also Slow Zones currently active in the Southeast Region. Visit the Right Whale Slow Zones and Dynamic Management Areas website for a full list of active Slow Zones.
Voluntary Right Whale “Slow Zone” Areas
Mariners are requested to avoid or transit at 10 knots or less inside the following Dynamic Management Areas and Slow Zones where endangered right whales have been detected. Vessel strikes are one of the primary causes of injury and death for right whales. Slower speeds are known to reduce the severity of impacts to whales when strikes occur and may provide boat and vessel operators an opportunity to avoid a collision. Visit our website for more information.
Southwest of Nantucket, MA Slow Zone: Effective February 28 - March 15, 2026
Waters bounded by:
Northern Boundary: 41°04′ N
Southern Boundary: 40°32′ N
Eastern Boundary: 70°08′ W
Western Boundary: 70°50′ W
Southeast of New York, NY Slow Zone: Effective February 19 - March 6, 2026
Waters bounded by:
Northern Boundary: 40°31′ N
Southern Boundary: 40°01′ N
Eastern Boundary: 72°53′ W
Western Boundary: 73°33′ W
South of Nantucket, MA Slow Zone: Effective February 17 - March 4, 2026
Waters bounded by:
Northern Boundary: 40°55′ N
Southern Boundary: 40°21′ N
Eastern Boundary: 69°28′ W
Western Boundary: 70°24′ W
Southeast of Atlantic City, NJ Slow Zone: Effective February 17 - March 4, 2026
Waters bounded by:
Northern Boundary: 39°20′ N
Southern Boundary: 38°49′ N
Eastern Boundary: 73°51′ W
Western Boundary: 74°30′ W
East of Ocean City, MD Slow Zone: Effective February 17 - March 4, 2026
Waters bounded by:
Northern Boundary: 38°34′ N
Southern Boundary: 38°03′ N
Eastern Boundary: 74°19′ W
Western Boundary: 74°58′ W
Active Seasonal Management Areas
Mandatory speed restrictions of 10 knots or less (50 CFR 224.105) are in effect for most vessels 65 feet or longer in the following areas:
Mid-Atlantic: November 1-April 30
Southeast: November 15-April 15
Cape Cod Bay: January 1–May 15
Off Race Point SMA: March 1- April 30
Give Right Whales Room
North Atlantic right whales are on the move along the Atlantic coast of the United States. To protect right whales, regulations prohibit approaching or remaining within 500 yards (1,500 feet) of a right whale. That’s the length of about five football fields.
Right Whales in Trouble
Endangered North Atlantic right whales remain highly vulnerable to extinction, as human impacts continue to threaten the survival of this species. There are approximately 380 individuals remaining, including about 70 reproductively active females.
In August 2017, NOAA Fisheries declared the increase in right whale mortalities an Unusual Mortality Event, which helps the agency direct additional scientific and financial resources to investigating, understanding, and reducing the mortalities. This work is done in partnership with the Marine Mammal Stranding Network, Canada’s Department of Fisheries and Oceans, and outside experts from the scientific research community.
More Information
- Details and graphics of all vessel strike management zones currently in effect
- Download the Whale Alert app for iPad, iPhone, and Android for real time updates on Slow Zones, SMAs, and other whale sightings
- Recent right whale detections and how to report sightings
- Real-time acoustic detections along the eastern seaboard
- Find out more about our right whale conservation efforts
Spread the Word!
All boaters from Maine to Florida, or interested parties, can sign up for email or text notifications about the latest Right Whale Slow Zones. You can also follow us on Facebook (@NOAAFisheriesNEMA) and X (@NOAAFish_GARFO and @NOAAFisheriesSE) for announcements.
Share our video on Right Whale Slow Zones.
Attention Right Whale Slow Zone SubscribersEmail and text notification settings can now be filtered to include Right Whale Slow Zone announcements from specific regions. Access your subscriber preferences to update your existing notifications.
Attention Right Whale Slow Zone SubscribersEmail and text notification settings can now be filtered to include Right Whale Slow Zone announcements from specific regions. Access your subscriber preferences to update your existing notifications.
