Digital Offshore Cadastre (DOC) - Atlantic83 - Submerged Lands Act (SLA) Boundary Line

This data set contains the Submerged Lands Act boundary line (also known as State Seaward Boundary (SSB) and Fed State Boundary) in ESRI Arc/Info export and Arc/View shape file formats for the MMS Atlantic Region. The SLA defines the seaward limit of a state's submerged lands and the landward boundary of federally managed OCS lands. In the MMS Atlantic Region it is projected 3 nautical miles offshore from the baseline. Further information on the SLA and development of this line from baseline points can be found in OCS Report MMS 99-0006: Boundary Development on the Outer Continental Shelf. Because GIS projection and topology functions can change or generalize coordinates, these GIS files are NOT an OFFICIAL record for the exact Submerged Lands Act Boundary. These data were downloaded from MMS by CZM on June 6, 2008 and then converted into the Mass State Plane Coordinate System, Mainland Zone, meters.