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Atlantic NAD 83 Supplemental Official OCS Block Diagram (SOBD) Images

Metadata Updated: October 29, 2023

This data set contains Supplemental Official OCS Block Diagram (SOBD) images in Adobe pdf format for areas within the BOEM Atlantic Region. Each SOBD describes a single block within an Official Protraction Diagram (OPD) and shows the lines (Submerged Lands Act, Limit of '8(g) Zone', maritime boundaries and/or marine sanctuaries) which occur within that block and divide it into different areas. The SOBD contains additional coordinates and area calculations for an individual block. These data are scanned images of the official paper SOBD's produced by the BOEM. Note that not all OPDs have boundaries cutting through them, so not all OPDs will have SOBDs generated for them. All current leasing activities will be done using the most current SOBDs. Historical (outdated) SOBDs can be obtained by contacting the Geospatial Services Division. Further information on the historic development of OPD's can be found in OCS Report BOEM 99-0006: Boundary Development on the Outer Continental Shelf: Also see the metadata for each of the individual GIS files used to create these SOBDs. The Official Protraction Diagrams (OPDs) and Supplemental Official Block Diagrams (SOBDs), serve as the legal definition for BOEM offshore boundary coordinates and area descriptions.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023
Publisher Bureau of Ocean Energy Management
Identifier 7cbb32d9-5e27-47ed-80c8-11f89482f910
Data Last Modified 2021-02-01
Category geospatial
Public Access Level public
Bureau Code 010:06
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id cdb06cba-7770-4b11-ba7a-f6f529a19a76
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -84.0,22.932606,-64.108332,44.995045
Publisher Hierarchy White House > U.S. Department of the Interior > Bureau of Ocean Energy Management
Source Datajson Identifier True
Source Hash ebec6411988c1ac265fc21fd56bf46ce68ce0c7be6c92e6ce96089f7a51bb1b5
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -84.0, 22.932606, -84.0, 44.995045, -64.108332, 44.995045, -64.108332, 22.932606, -84.0, 22.932606}

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