National Viewer


This data viewer provides the baseline information needed for ocean planning efforts, particularly those that involve finding the best location for renewable energy projects. The National Viewer is also a helpful tool in the permit review process. Users pick the ocean geography of their choosing and quickly see the applicable jurisdictional boundaries, restricted areas, laws, critical habitat locations, and other important features. With the national viewer, potential conflicts can be identified and avoided early in the planning process.


  • Allows users to visually analyze and explore geospatial data for marine spatial planning activities
  • Provides direct access to authoritative marine cadastral data from federal and state sources

Technical Specifications

  • A geographic information system (GIS) data visualization application such as ArcGIS Explorer or Google Maps is necessary to view downloaded spatial data

For more information about National Viewer, please visit


Testimonials and Product Page
Presents basic information about the product and testimonials from product users

Ocean Dimensions
Learn more about ocean data dimensions in this animation

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Stories from the Field

Ensuring Safe Anchoring with Vessel Traffic Data in Florida
Vessel tracking data helps improve the safety of vessels anchoring within and transiting through anchorage areas.

Providing Easily Accessible Maps to Aid Ecosystem Restoration in the Gulf of Mexico and Coastal Change Analysis Program land cover data are helping to inform ecosystem restoration planning in the Gulf of Mexico.

Reducing Whale Fatalities along the California Coast
Automatic Identification System (AIS) data from helped determine where changes to shipping lanes might help reduce ship strikes on whales.

Identifying Navigational Conflicts near Potential Offshore Energy Sites
Automatic Information System (AIS) data from helped identify wind planning area conflicts.

Providing Data and Viewing Options for Wind Energy Transmission off the Mid-Atlantic Coast provided the data and viewing tool needed to identify suitable sites for wind energy transmission lines and hubs.

Informing Ocean Planning Efforts with Authoritative Data reduces the time and money it takes to compile spatial data for regional marine planning portals.

Screening Potential Locations for Offshore Wind Energy Projects off the East Coast
The data helped in the screening of areas for offshore energy projects.

Using Spatial Data and Web Mapping Tools to Support Wind Energy Planning off the North Carolina Coast
The National Viewer enhanced communication in the development of “Wind Energy Areas."

Supporting Wave Energy Permitting in California
California created a series of authoritative maps using

Evaluating Potential Impacts of Ocean Energy Projects in California
The National Viewer and data helped evaluate potential impacts of ocean energy projects in California.