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Start Over You searched for: Place Massachusetts Bay (Mass.) Remove constraint Place: Massachusetts Bay (Mass.) Subject Passenger ships Remove constraint Subject: Passenger ships Theme Environment Remove constraint Theme: Environment

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2012. United States. National Oceanic and Atmospheric Administration. This raster dataset represents density of passenger vessel traffic in 2012 from vessels with Automatic Identification System (AIS) transponders in ... United States. National Oceanic and Atmospheric Administration.