33 C.F.R. § 3.65-10
Sector Puget Sound's office is located in Seattle, WA. The boundaries of Sector Puget Sound's Marine Inspection and Captain of the Port Zones start at latitude 48°29'35" N, longitude 124°43'45" W, proceeding along the Canadian border east to the Montana-North Dakota boundary; thence south along this boundary to the Wyoming state line; thence west and south along the Montana-Wyoming boundary to the Idaho state line; thence northwest along the Montana-Idaho boundary to latitude 46°55'00" N; thence west along latitude 46°55'00" N to longitude 123°18'00" W; thence north to a point latitude 47°32'00" N, longitude 123°18'00" W; thence west along latitude 47°32'00" N to the outermost extent of the EEZ; thence northeast along the outermost extent of the EEZ to the Canadian border; thence east along the Canadian border to the point of origin.
33 C.F.R. §3.65-10