You searched for: Subject Oceans Remove constraint Subject: Oceans Subject Transportation Remove constraint Subject: Transportation Place Massachusetts Remove constraint Place: Massachusetts Data type Point Remove constraint Data type: Point Year 2012 Remove constraint Year: 2012
2012. I.M. Systems Group. This point shapefile represents marine aids to navigation in the Northeastern United States. The Coast Guard maintains systems of marine aids to na... Coastal Services Center (U.S.).
2012. SeaPlan. The Northeast Recreational Boater Activities Layer depicts activity points plotted by participants in the 2012 Northeast Recreational Boater Survey... Northeast Ocean Data.