Rule 16. On the waters of the Detroit river, adjacent to the city of Wyandotte, Wayne county, and hereinafter described, it is unlawful for the operator of a vessel to exceed a slow-no wake speed when within 1,000 feet of the shore:
(a) South of a line beginning where Emmons boulevard as extended intersects the water's edge, thence southeasterly to the northernmost part of Grassy island and north of a line beginning where Goodell avenue as extended intersects the water's edge and thence east to Grassy island.(b) South of a line beginning where Cedar street as extended intersects the water's edge, thence east to the Fighting island channel and north of a line beginning where Plum street as extended intersects the water's edge and thence east to Grosse Ile.Mich. Admin. Code R. 281.782.16