33 CFR §401.65

1. (a)Every vessel entering or leaving a lake port shall report to the appropriate Seaway station at the following check points:
   1. (1)For the lake ports of Toronto and Hamilton, 1 nautical mile outside the harbor limits; and
   2. (2)For other lake ports, when crossing the harbor entrance.
2. (b)Every vessel arriving at a port, dock, or anchorage shall report to the appropriate Seaway station, giving an estimated time of departure if possible.
3. (c)At least four hours prior to departure from a port, dock, or anchorage, every vessel shall report to the appropriate Seaway station its destination and its expected time of arrival at the next check point.
4. (d)Every vessel intending to conduct a dive operation and/or Remotely Operated Vehicle (ROV) inspection at a dock, wharf or approach wall shall provide a 24-hour minimum notice of diving operations to the appropriate Seaway Traffic control Centre.