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Wednesday, October 26, 2016

Navigation Alert: Right Whales Rule in New DMA Off Nantucket

March 4, 2014

Voluntary DMA off Nantucket

Voluntary DMA off Nantucket

A voluntary vessel speed restriction zone (Dynamic Management Area - DMA) has been established south of Nantucket to protect an aggregation of 3 right whales sighted in this area recently (see image) with immediate effect through 16, March 2014. Mariners are requested to route around this area or transit through it at 10 knots or less.

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

  • Cape Cod Bay SMA - in effect through May 15, 2014
  • Off Race Point SMA - in effect through April 30, 2014
  • Mid-Atlantic SMAs - in effect through April 30, 2014
  • Southeast SMAs - in effect through April 15, 2014

For recent right whale sightings, visit:

Details and graphics of all ship strike management zones currently in

NB: Approaching a right whale closer than 500 yards is a violation of federal and state law.

Source: GAC/ NOAA Fisheries - U.S. Department of Commerce

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