What geographic area does "Great Lakes and Inland" refer to?

The option indicating "Specific route endorsements within United States boundaries" accurately describes the geographic area referred to as "Great Lakes and Inland." This term specifically pertains to navigable waters that are within the boundaries of the United States, including the Great Lakes, some inland rivers, and other waterways accessible to mariners.

This designation is crucial for those seeking endorsements to operate vessels in these specific waters, as it involves unique navigation challenges, local regulations, and operational conditions distinct from oceanic or international waters. The Great Lakes and adjoining inland waterways are often regulated by specific maritime authorities and have their own navigational rules and practices that mariners must adhere to.