Connecticut / Long Island Sound

June 28, 2024


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June 28, 2024

New Right Whale Slow Zone: SW Martha’s Vineyard, MA

Effective Through July 12

On June 27, 2024, a Wind Energy protected species observer detected the presence of right whales southwest of Martha’s Vineyard, MA. The slow zone is in effect through July 12.

Locations and effective dates are listed below.

VOLUNTARY Right whale "Slow Zone" AREAS

Mariners are requested to avoid or transit at 10 knots or less inside the following Dynamic Management Area (DMA) where right whales have been detected. Please visit our website for more information.

Southwest of Martha’s Vineyard, MA DMA Slow Zone: Effective June 27-July 12

Waters bounded by:




Active Seasonal Management Areas (SMAs)

Mandatory speed restrictions of 10 knots or less (50 CFR 224.105) are in effect for vessels 65 feet or larger in the following areas:

  • Great South Channel SMA (Apr. 1 - Jul. 31)

Give Right Whales Room

North Atlantic right whales are on the move along the Atlantic coast of the U.S. If seen, remember that approaching a right whale closer than 500 yards is a violation of federal and state law.

Right Whales in Trouble

Endangered North Atlantic right whales are approaching extinction. There are approximately 360 individuals remaining, including fewer than 70 reproductively active females. Human impacts continue to threaten the survival of this species.

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 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 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 right whale sightings.

Recent right whale sightings
and real-time acoustic detections along the eastern seaboard.

Find out more about our right whale conservation efforts and the researchers behind those efforts.

Spread the Word!

All boaters from Maine to Virginia, 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 Twitter (@NOAAFish_GARFO) for announcements.

Share our video on Right Whale Slow Zones.


Media: Contact GARFO Public Affairs

Disclaimer: For quality assurance purposes please note well that while the information contained in this website is regularly vetted for accuracy it is not intended to replace the local knowledge or expertise pertaining to port conditions of our marine operations personnel.

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