2019 Map of Passage Island OE N

About this map

Lake Superior dominates this maritime survey, illustrating the international aquatic boundary where the United States and Canada meet. The map captures the northernmost aquatic reaches of Isle Royale National Park, where the remote island wilderness transitions into the vast open waters of the Great Lakes. While primarily a hydrographic and jurisdictional record, the sheet includes public land survey system designations such as t68n r31w and t68n r32w, which provide essential coordinates for researchers and maritime historians tracking the legal divisions of this wilderness archipelago. The isolation of the area is underscored by the lack of terrestrial features, focusing instead on the significant international border cutting across the water north of the main island chain.