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THOMPSON'S COAST PILOT. 17 The SE point of the North Manitou Island bears from the dock HiN 63 miles, and the Lighthouse bears from the dock SEby84S8 2 miles. There is also a dock at the North Unity Bay, floc the Manitou Islands. GREEN BAY. FYROM POINT WAUGOSHANCE LIGHTHOUSE TO GREEN BAY CITY, ONE | HUNDRED AND SEVENTY-NINE MILES. ~ From Point Waugoshance Lighthouse to abreast of Beaver Island (revolving light) SW2W 28 miles; thence W2S8 67 miles, to Rock Island Lighthouse. In running through this channel, keep' Buoyer's Bluff, which is 7 miles from Rock Island Lighthouse, just open with Rock Island, to 'clear the shoal which sets off from the SE end of St. Martin's Island 2 miles, and bears from Rock Island Lighthouse NELE 54 miles. The shore is very bold on the north and west sides of Rock Island, and the best landing place is to the SW, where the beach begins to form towards the false passage. To make a landing, run close along the island until nearly abreast the beach, when you will have 11 fathoms water, soft bottom. 'This bay or false channel is open to the NW, and is rock all across to Washington Island, just beyond the low point which makes out from Rock -Island to the SW. From Rock Island Lighthouse, run for Buoyer's Bluff, 7 miles. This Bluff is also very bold, and can be approached within + mile. Thence shape your course SW4W, for the westermost point of Chamber's Island, 26 miles; thence SbyW4W 11 miles, so as to pass 3 mile to the eastward of Green Island, and continue the same course 9 miles further--20 miles in all from Chamber's Island, to -- pass the point of Pershetico Shoal, which sets off 34 miles to the SE from Pershetico Point; when past the shoal or abreast of Per- shetico Point, steer SWbyS 31 miles to the buoy off Long Tail Point Lighthouse ; leaving this buoy (red) to starboard; Point aux Sauble Bank buoy (black) to port; Grassy Point buoy (red) to starboard. All the rest of the buoys are red, and must be left on 3 -