175.105—Definitions.
(a)
Visual distress signal means a device that is approved by the Commandant under 46 CFR Part 160 or certified by the manufacturer under 46 CFR Parts 160 and 161.
(3)
Those waters directly connected to the Great Lakes and territorial seas (i.e., bays, sounds, harbors, rivers, inlets, etc.) where any entrance exceeds 2 nautical miles between opposite shorelines to the first point where the largest distance between shorelines narrows to 2 miles, as shown on the current edition of the appropriate National Ocean Service chart used for navigation. Shorelines of islands or points of land present within a waterway are considered when determining the distance between opposite shorelines.