The following text may have been generated by Optical Character Recognition, with varying degrees of accuracy. Reader beware!

OCTOBER 25, 1900. HYDROGRAPHIC OFFICE NOTES. LAKE SUPERIOR— Western End—Magnetic Disturbances —Caution—Local disturbances of the magnetic needle are known to exist, with more or less intensity, all along the north shore of Lake Superior from Magnet Island, Ontario, to Duluth. The tendency is to draw upward bound ships toward the north shore, and calls for increased vigilance from navigators. Various reports received agree that Granite point or Knife island at the mouth of Knife river, Minnesota, is a place of reat disturbance; one report stating that passing Knife island at the distance of a mile the north end of the needle is drawn from 15° to 18° to the east of the magnetic north, the duration of the disturbance being about Io minutes, -when the compasses gradually resume the customary direc- tion. Similar disturbances of less force are reported from reliable sources along the north shore at Lister river, Split Rock, Pallisades, Petit Marais, Grand Marais and Pigeon Point. At Magnet island the fluctuations assume greater dimen- sions, the needle being disturbed from 40° to 50° in close proximity to land. It is recommended not to attempt, in thick weather, the passage between Edwards and Magnet islands, leading into Black bay, owing to the large and capricious deflections of the compass while in the vicinity of the latter. It is stated that a ship steering the correct magnetic course from Devil’s island to Duluth, will, if no attention is - paid to local attraction, orif in thick weather the lead is neglected, run on shore between Two Harbors and Duluth. In the vicinity of Two Harbors the deflection of the needle becomes very great. An experienced captain recommends that ‘‘Ships bound from Devils island or Sand island to Duluth, do well to shape their course midway between the lights at the Duluth and Superior entrances; this ensures safety, counteracts the deflection of the compass needle, and before the distance is run one or the other fog whistle will be heard.” Another captain remarks: ‘‘Taking a departure from Devils Island to Duluth in thick weather, I run on the cor- “rect magnetic course 40 statute miles, when Two Harbors ‘bears about NW., and get soundings; the depth of these gives reliable information as to-the distance from shore. If fifty fathoms or less is obtained, Iam well to the southward and may keep on with due precaution. If the depth found is between 60 and 100 fathoms, or more, the ship is'to the northward, and the course has to be directed to port, and great caution is necessary until the Duluth fog whistle is heard.”’ Note.—Mr. LL. M. Stoddard, master of the U.S. light- house tender Amaranth, reports that in making the course from Marquette to Point au Sable he found an average of about 0° 30’ westerly variation instead of 1° 30’ easterly. LAKE SUPERIOR.—Apostle Islands—Reported Shoal off west side of Outer Island.—‘nformation dated September 12, “I900, has been received frm the U. S. Light-House Board that Mr. L. M. Stoddard, master of the light house tender _ Amaranth, reports the «xistence of a shoal, with 5 fathoms of water over it and 18 to 20 fathoms around, about 1% (13/4) pies: due west from the center of the west shore of the outer island. LAKE Huron—Shoeal northeastward of Sturgeon Point Lighthouse—Presque Isle harbor entrance—Sand bar on range line.—Information dated September 12, 1900, has been received from the Light-House Board that Mr. L. M. Stoddard, master of the lighthouse tender Amaranth, reports the existence of an uncharted rocky reef about 100 feet wide extending in a north and south direction with a least depth found of 18 feet of water over it, ina position from which Sturgeon point lighthouse bears S. 34° W. true (S.W. 3 S.\ mag.), distant about ‘34 (4) miles. Also, that.asand bar with 14 feet of water on it has formed THE MARINE RECORD. off the entrance to Presque Isle harbor, directly on the har- bor range line and 1,4; (14) miles from the front light. St. CLAIR RIvER—Port Huron—Dangerous sunken wrecks.—The schooner John Martin, ore laden, sunk by col- lision with the steamer Yuma, in the channel abreast of Port Huron, September 21, 1900, lies about 1,100 feet below the Fontana wreck in about 60 feet of water, close to west- ward of Gratiot range line. Mariners are cautioned ac- cordingly. LAKE ERIE—Detroit river approach—Amended position of reported obstruction off Monroe.—With reference to Notice to Mariners No. 35 (955) of 1900, information has been received from Capt; W. P. Benham, of the steamer Ravenscraig, that August 17, 1900, the ship, drawing 17 feet of water, rubbed over some obstruction in a position east of Monroe, and about 10,4; (12) miles N. 40° 45’ E. true (N.E. 34 N. Mag.) from Maumee straight channel entrance gas buoy No. I. NotE.—The general opinion seems to be that this obstruc- tion is a sunken wreck. LAKE ONTARIO.—KHast Charity and South Charity shoals. —The following information received through the Light- House Board has been furnished by Bridadier General John M. Wilson, Chief of Engineers, U. S. army: South Charity and East Charity shoals, lower part of Lake Ontario, were surveyed August 22-30, 1900. Both shoals consist of rocky ledges, and in their shallowest parts are covered with large bowlders. East Charity shoal has a least depth of 8 feet at extreme low water, and there is a considerable area with water 10 to 18 feet deep at the same stage. Between the 18-foot curves it has an extreme length of about 2,000 feet and extreme width of about 700 feet. Between the 14-foot curyes an ex- treme length of about 1,600 feet and an extreme width of about 200 feet. The least depths are found near the lower or northeastern end of the shoal. East Charity shoal is in latitude 44° 02/ 13’ N., longitude 76° 20/ 04 W. South Charity shoal has a least depth of 10% feet at ex- treme low water. Between the 18-foot curves it has an ex- treme length of about 2,000 feet and an extreme width of about 100 feet. Between the 14-foot curves an extreme length of about 300 feet and an extreme width of about 50 feet. This shoal is a narrow ridge of rock and is situated in latitude 44° o1’ 50” N., longitude 76° 30’ 08” W. Both shoals extend generally in a northeasterly and south- westerly direction. LAKE SUPERIOR—Portage Lake ship canal entrance— Caution as to lights.—Captain B. F. Howard, of the steamer Bon Voyage, reports that the lights at the Lake Superior en- trance to the Portage Lake ship canal when in range lead on to the eastern extremity of the western breakwater, now nearly finished. The lantern which is supposed to be shown from the end of this structure by the contractor cannot be depended on, especially in stormy weather, therefore great caution is necessary when entering this port at night. oo oo Maritime Liens—Damages for Breach of Charter—Estopel by Settlement.—While asteamship was under a time char- ter to the libelant, she became stranded, and received in- juries which ‘subsequently made it necessary for her to be docked for repairs, after which libelant resumed his use of her under the charter. In the next settlement he claimed and was allowed a deduction for the time lost in making re- pairs. He made subsequent pavments from time to time under the charter, and on its termination made a final set- tlement with the owners, no claim for futher damages hav- ing been made on account of theinjury. Held, that he was estopped by such settlements from subsequently asserting a lien upon the vessel for such further damages after her sale to a bona fide purchaser with no notice of libelant’s claim. The Thornley, 103 Fed. Rep. (U. S.) 686. NOTICE TO MARINERS. LicHt-Housk ESTABLISHMENT, OFFICE OF THE LIGHT-HOoUSE INSPECTOR, IITH ist | DETROIT, MicH., October 18, T9900. Information is hereby given that the first-class and third- class can buoys off Pointe Abbaye, Lake Superior, have been replaced by winter markers. Information is hereby given that this day the High Point light, Portage Lake, Michigan, has been re-established and is now shown from a temporary structure at the same height above the lake level. Ree ~ J. C. Wirson, Commander U. S, N. Inspector 11th Light-House District. UNITED STATES OF AMERICA—NORTHERN LAKES AND RIVERS— WISCONSIN. TREASURY DEPARTMENT, OFFICE OF THE LIGHT-HOUSE Boao, } WASHINGTON D. C. October I9, 1900. LAKE MICHIGAN, GREEN BAY, ETC., BUOVAGE. Notice is hereby given that the work of changing the iron buoys in the Ninth Light-House District, for the winter, to spar buoys, similarly painted, will begin on the dates below. Gas-lighted buoys, entrance to Fox river, Green Bay, Wis- consin, November 7, __ Gas-lighted, bell and iron buoys in Green Bay, channels between Lake Michigan and Green Bay, on Wiggins Point shoal, and in Sturgeon Bay, Wisconsin and Michigan, No- vember 8, Gas-lighted buoys, Fox Island and Rush shoal buoys, Lake Michigan, Michigan, November 12. Mackinac Straits, (west of old Mackinac light-station) and channels north and east of Beaver Island group, Michi- gan, November 15. ; Off Sheboygan, Wisconsin, November. 17. Off Milwaukee and Racine, Wisconsin, November 21. Off Chicago, Illinois, November 28. ‘HIGH POINT BEACON LIGHT STATION. Notice is hereby given that on the morning of October 11, 1900, the structure from which the fixed white post-lantern light was shown at this station, at High Point, easterly side of Portage river, was destroyed by fire. The light will be re-established as soon as practicable. WHITEFISH POINT LIGHT STATION.—Notice is hereby given that on October 12, 1gvo, the characteristic of the light station, on Whitefish Point, southeasterly part of Lake Su- perior, and on the southerly side of the entrance to the head of St. Mary’s river, was changed from flashing white every 5 seconds to flashing white every 10 seconds. SHEBOYGAN BREAKWATER BEACON LIGHT STATION. Notice is hereby given that on or about October 25, 1900, a fixed red lens-lantern light will be established at the southerly end of Sheboygan breakwater, Sheboygan Harbor, westerly side of Lake Michigan. The light will be ‘sus- pended from a brown, wooden post, at a height of about 30 feet above mean lake level. Immediately in front of the lake side of the post there is a V-shaped timber protection 6 feet high and 18 feet each way. By order of the Light-House Board. A FRANCIS J. HIGGINSON, Rear Admiral, U. S. Navy, Chairman. rr or ico Officers of the Chicago Ship Building Co, now are: Presi- dent, William L,. Brown; vice-president, B. W. Wells; secre- tary and treasurer, O. R. Sinclair; general manager, J. A. Ubsdell, Jr. : '5.F. HODGE &C MARINE ENGINES, | PROPELLER WHEELS, | DECK HOISTERS, MARINE REPAIRS. @ 312 ATWATER STREET, DETROIT, MICH. ’ Chas. E. & W. F. 58 William Street, New York City. g and 6 Billiter Avenue, E. C., 2 Thsurance BROWN&CO., - - - J.G. KEITH & CO., - Lakes, both CARGOES and HULLS. Royal Insurance Building, Chicago, Ill. C. T. BOWRING & CO. London, England. 202 Main Street, Buffalo, N. Y. A. A. & B. W. PARKER, 15 Atwater St., W. Detroit, Mich. 138 Rialto Building, Chicago, Ill. LA SALLE & CO., Board of Trade Building, Duluth, Minn. Are prepared to make rates on all classes of [larine Insurance on the Great Peck, Victor Signal, Marine Valve Oil, Eldorado Engine Oil, Renown Engine Oil, Atlantic Red Engine Oil, Mineral Seal Oil, Arctic Cup Greases, are trade mark brands manufactured by the The best goods are most economical. Standard Oil Company and found on sale at ail lake ports. Remember the names.