46 C.F.R. § 401.450 Pilot change points.
Title 46 - Shipping
A Registered Pilot's assignment is completed when the vessel to which he is assigned completes its arrival at or, in the case of a through trip, passes any of the following places: (a) Snell Lock; (b) Cape Vincent; (c) Port Weller; (d) Lock No. 7, Welland Canal; (e) Detroit/Windsor, other than assignments originating or terminating at a point on the Detroit River; (f) Port Huron/Sarnia; (g) Detour; (h) Gros Cap; (i) Chicago with respect to assignments originating at Detour or Port Huron/Sarnia; and (j) Duluth/Superior and Fort William/Port Arthur with respect to assignments originating at Gros Cap. [CGFR 68–57, 33 FR 6479, Apr. 27, 1968. Redesignated at 61 FR 32655, June 25, 1996, and further redesignated by USCG–1998–3976, 63 FR 35139, June 29, 1998]
Title 46: Shipping
PART 401—GREAT LAKES PILOTAGE REGULATIONS
Subpart D—Rates, Charges, and Conditions for Pilotage Services
§ 401.450 Pilot change points.