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68 THOMPSON'S COAST PILOT. From Pinepog to Pigeon River......<.sseseseccsesesssrssceees 11 miles. " Pigeon River to Saginaw River ,...+.6+seecseecercneness a " Baginaw River to Pine River. . «2... p< ccepsnnceeescuenss ma. « Pine River to Tawas Mills...... Bs ce nase ~ * LIGHTHOUSES AND HARBORS @N LAKE HURON. Fort Gratiot light, fixed, varied by flashes, visible 14 miles, at the mouth of St. Clair River. Point aux Barques light, fixed, white light, visible 16 miles, on the eastern side of the entrance to Saginaw Bay, and 71 miles from St. Clair River. | Ottawa Point or Tawas Bay light, fixed, white, varied by red flashes once in three minutes, visible 12 miles. To enter Tawas Bay for a harbor, bring the mill at Tawas City to bear WN W3N, and run on this course until the Lighthouse on Tawas Point bears EbyNN, then haul up NESE, and run in on this bear- ing, and come to in 34 fathoms water, with the Lighthouse bearing due east. In beating in, the only precaution necessary is to look out for the spit off Tawas Point. This can generally be plainly diseerned by the color of the water. The anchorage is good all over the bay, being clay and sand, and is well shel- tered from all winds excepting south. These bearings are magnetic, and the variation of compass is 2°05' E. From Point aux Barques, with the Lighthouse bearing SW ox miles, the course to Tawas Harbor is WbyN2N. The docks at T'awas City have 8 and 10 feet. water alongside at the outer end. In leaving Tawas Bay, bound to the northward, run out from the anchorage until the dock or mills bear WSW, and run out ESE, until the coast to the northward is well open, or at the distance of 14 miles from it; thence NESE 18 miles, to Point Sauble; thence N3E 50 miles, to Thunder Bay Island Light- house. In foggy or dark weather, coming from the northward, run the coast along in 34 to 4 fathoms water, which will lead you into the bay. The spit and point sets off from the Light- house 1 miles, and at the extreme end drops off suddenly, from 4 to 9 and 23 feet water. From the Lighthouse to dock, 3% miles.