Reducing Vessel Strikes to North Atlantic Right Whales

Right Whale Speed Rule Assessment

In 2013, NOAA Fisheries committed to publish a report evaluating the conservation value and economic and navigational safety impacts of the 2008 North Atlantic right whale vessel speed regulations (50 CFR § 224.105). The report was finalized in June 2020 and evaluates four aspects of the right whale vessel speed rule: biological efficacy, mariner compliance, impacts to navigational safety, and economic cost to mariners.  It also provides a detailed assessment of the rule’s effectiveness, and assesses general trends in vessel traffic characteristics within Seasonal Management Areas over time.

• Right Whale Vessel Speed Rule Assessment, June 2020 (PDF, 53 pages)
• Appendix A: Figures and Tables (PDF, 77 pages)
• Appendix B: Economic Impact Assessment (PDF, 87 pages)

Vessel Speed Restrictions

All vessels 65 feet (19.8 meters) or longer must travel at 10 knots or less in certain locations (called Seasonal Management Areas or SMAs) along the U.S. east coast at certain times of the year to reduce the threat of vessel collisions with endangered North Atlantic right whales. The purpose of this mandatory regulation is to reduce the likelihood of deaths and serious injuries to these endangered whales that result from collisions with vessel.Because vessels of all sizes can strike a whale, NOAA Fisheries also encourages vessels less than 65 feet in length to help protect right whales by slowing to 10 knots of less within active SMAs as well. 

• Compliance Guide (PDF, 2 pages)
• Final Rule to eliminate sunset provision on speed restrictions (12/09/13, 78 FR 73726)
• Proposed rule to eliminate sunset provision on speed restrictions (06/06/2013, 78 FR 34024)
• Economic Analysis of North Atlantic Right Whale Ship Strike Reduction Rule (2012, PDF 49 pages)  
• Final rule to implement speed restrictions (10/10/2008, 73 FR 60173)

Seasonal Management Areas - Northeast

Cape Cod Bay, January 1 - May 15

Includes all waters of Cape Cod Bay with Northern Boundary of 42º04'56.5"N, 070º12'W to 42º12'N, 070º12'W then due west back to shore.

Off Race Point, March 1 - April 30

Waters Bounded by:

42º04'56.5"N, 070º12'W

42º12'N, 070º12'W

42º12'N, 070º30'W

42º30'N, 070º30'W

42º30'N, 069º45'W

41º40'N, 069º45'W then due west back to shore.

Great South Channel, April 1 - July 31

Waters Bounded by:

42º30'N, 069º45'W

42º30'N, 067º27'W

42º09'N, 067º08'24"W

41º00'N, 069º05'W

41º40'N, 069º45'W then back to starting point.

Seasonal Management Areas - Mid-Atlantic

Migratory Route and Calving Grounds, November 1 - April 30

Block Island Sound waters bounded by:

40º51'53.7" N 070º36'44.9" W

41º20'14.1" N 070º49'44.1" W

41º04'16.7" N 071º51'21.0" W

40º35'56.5" N 071º38'25.1" W then back to starting point.

Within a 20-nm (37 km) radius of the following (as measured seaward from the COLREGS lines):

-Ports of New York/New Jersey:

40º29'42.2"N 073º55'57.6"W

-Entrance to the Delaware Bay

(Ports of Philadelphia and Wilmington):

38º52'27.4"N 075º01'32.1"W

-Entrance to the Chesapeake Bay

(Ports of Hampton Roads and Baltimore):

37º00'36.9"N 075º57'50.5"W

-Ports of Morehead City and Beaufort, NC: 34º41'32.0"N 076°40'08.3"W

Within a continuous area 20-nm from shore between Wilmington, North Carolina, to Brunswick, Georgia, bounded by the following:

A- 34º10'30"N, 077º49'12"W

B- 33º56'42"N, 077º31'30"W

C- 33º36'30"N, 077º47'06"W

D- 33º28'24"N, 078º32'30"W

E- 32º59'06"N, 078º50'18"W

F- 31º50'00"N, 080º33'12"W

G- 31º27'00"N, 080º51'36"W

and west back to the shore.

Seasonal Management Areas - Southeast

Calving and Nursery Grounds, November 15 - April 15

Vessel speed is restricted in the area bounded to the north by latitude 31º27'N; to the south by latitude 29º45'N; to the east by longitude 080º51'36"W.

Right Whale Slow Zones

Right Whale Slow Zones is a program that notifies vessel operators of areas where maintaining speeds of 10 knots or less can help protect right whales from vessel collisions. Under this program, NOAA Fisheries provides maps and coordinates to vessel operators indicating areas where right whales have been detected. Mariners are encouraged to avoid these areas or reduce speeds to 10 knots or less while transiting through these areas for 15 days.

Right Whale Slow Zones are established around areas where right whales have been recently seen or heard; these areas are identical to Dynamic Management Areas (DMA) when triggered by right whale visual sightings but, they will also be established when right whale detections are confirmed from acoustic receivers. 

NOAA Fisheries announces Right Whale Slow Zones to mariners through its customary maritime communication media and displays any active zones below, with the most recent designation first.

All boaters, or interested parties, can sign up for email notifications by clicking here and selecting "Right Whale Slow Zones" under the Regional New England/Mid-Atlantic subscription topics. You can also follow us on Facebook (@NOAAFisheriesNEMA) and Twitter (@NOAAFish_GARFO) for announcements.

You can check for Right Whale Slow Zones on our online right whale sightings map. Or, you can download the free Whale Alert app, which will automatically notify you when you enter one of these areas.

South of Nantucket, Massachusetts, February 26 - April 24, 2021

Waters bounded by:

41 23 N
40 40 N
069 39 W
070 35 W 

South of Nantucket, Massachusetts, March 30 - April 24, 2021

Waters bounded by:

41 01 N
40 19 N
069 50 W
070 46 W 

South of Martha's Vineyard, Massachusetts, March 7 - April 14, 2021

Waters bounded by:

41 21 N
40 41 N
070 15 W
071 06 W

South of Martha's Vineyard, Massachusetts, April 7 - April 22, 2021

Waters bounded by:

40 42 N
40 02 N
070 45 W
071 34 W

East of Boston, Massachusetts, April 8 - April 23, 2021

Waters bounded by:

42 39 N
41 54 N
070 08 W
071 06 W

Southeast of Chatham, Massachusetts, April 9 - April 24, 2021

Waters bounded by:

41 56 N
41 15 N
069 23 W
070 16 W

Dynamic Management Areas

Voluntary Dynamic Management Areas (DMAs) may be established by NOAA Fisheries based on visual sightings documenting the presence of three or more right whales within a discrete area. Mariners are encouraged to avoid these areas or reduce speeds to 10 knots or less while transiting through these areas. DMAs are announced to mariners through its customary maritime communication media and display any active ones, with the most recent designation first.

Vessel Routing

Great South Channel Area to Be Avoided

For ships weighing 300 gross tons or more, a voluntary seasonal Area To Be Avoided (ATBA) is in effect each year from April 1 to July 31, when right whales face their highest risk of ship strikes in this area.

Boston, Massachusetts Traffic Separation Scheme

The North-South lanes of the Traffic Separation Scheme servicing Boston were narrowed from 2 miles to 1.5 miles (consistent with the East-West Boston Traffic Separation Scheme lanes) to reduce vessel collisions with whales.

Charts of Approaches to Boston Traffic Separation Scheme and Area to be Avoided:

• 13200: Georges Bank and Nantucket Shoals
• 13203: Georges Bank Western Part
• 13006: West Quoddy Head to New York

 Recommended Routes in Key Right Whale Habitats

NOAA established recommended vessel routes in four locations to reduce the likelihood of ship collisions in key right whale habitats in Massachusetts, Georgia, and Florida.

• Recommended Routes (PDF, 2 pages)

Mandatory Ship Reporting System

When ships greater than 300 gross tons enter two key right whale habitats—one off the northeast U.S. and one off the southeast U.S.—they are required to report to a shore-based station.

In return, ships receive a message about right whales, their vulnerability to ship strikes, precautionary measures the ship can take to avoid hitting a whale, and locations of recent sightings.

Mandatory Ship Reporting System areas will soon be available on all NOAA Electronic Navigation Chart products.

• Mandatory Ship Reporting System Placard (PDF, 2 pages)
• Final Rule (11/20/2001, 69 FR 58066)

Mariner Training Resources

We're working on making our materials available online. In the interim, if you'd like a copy of our Prudent Mariner's Guide to Right Whale Protection CD please contact Peter Kelliher.

Report a Vessel Strike

Report vessel strikes to the National Marine Mammal Stranding Network.

Where Are Right Whales?

• Northeast U.S. Right Whale Sightings
• Southeast U.S. Right Whale Sightings
• Acoustic detections in Cape Cod Bay and the Boston TSS
• Download the Whale Alert app for iPad and iPhone