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# In This Section

                      -  Studies                          -  Economic Impact Study 
                        -  Great Lakes-St. Lawrence Seaway Study 
                        -  Infrastructure Investment Survey 
                        -  Safety Impact Study 
                        -  Social Impact Study 
                      -  Publications                          -  Seaway Compass 
                        -  Seaway System Directory 
                        -  Marketing Materials 
                      -  Reports                          -  Annual Reports 
                        -  Seaway Infrastructure Program 
                      -  Other Resources                          -  Electronic Reading Room 
                        -  National Environmental Policy Act (NEPA) 
                        -  GLS Federal Grants Toolkit 
                        -  Green Shipping Corridor Network (GSCN) 
                        -  GSCN Framework 
                        -  Transportation ROUTES 

## Related Links

                  -                                          Great Lakes-St. Lawrence Seaway System 2023 Directory                   

## Contact the GLS

Great Lakes St. Lawrence Seaway Development Corporation (GLS)Policy HeadquartersU.S. Department of Transportation
1200 New Jersey Ave, SE W62-300Washington, DC20590United States

**Email:**GLS@dot.gov**Phone:**202-366-0091****Alt Phone:**800-785-2779****Fax:**202-366-7147****Business Hours:**8:00am-5:00 pm ET, M-F

If you are deaf, hard of hearing, or have a speech disability, please dial 7-1-1 to access telecommunications relay services.

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                            - Great Lakes - St. Lawrence Seaway

# Seaway System Directory

The Great Lakes-St. Lawrence Seaway System Directory provides information is a dynamic and comprehensive publication about the ports and shipping-related businesses critical throughout the region and worldwide over. The Directory is illustrated with extensive photography and serves as an excellent tool for any business or interested individual interested in the Great Lakes Seaway maritime industry.

The Directory features:
                      - An overview of the Great Lakes-St. Lawrence Seaway System, identifying its physical characteristics, the commodities it handles, and its role in the North American economy
                      - Coverage of new technologies, efficiencies, quality assurances, and customer service initiatives that define the Seaway of the 21st century
                      - Presentation of the Great Lakes-St. Lawrence Seaway System as a unified whole
                      - Comprehensive profiles of all major Canadian and U.S. ports in the System
                      - Operational information on public and private service providers, including government agencies, stevedoring firms, pilotage agencies, vessel agents, brokers, freight forwarders, tugboat operators, and ship repair yards
                      - A complete Great Lakes Seaway System directory with addresses, phone and fax numbers, websites and web addresses

An electronic version of the Directory is available online for **review and download**.