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GREAT LAKES YARDS. Alexander & Cox Co. Ogden and Western Avenues, Chicago, III. One 16-H. P. four cylinder gasoline engine for a 25-ft. cabin cruiser for Ri H.z Peterson; 29; Garisie. place Chicago. One 6-H. P. two cylinder gasoline engine for a 25-ft. hunting cabin cruis- er fot I. Heckman, 1° Park avenue, Chicago. Davis Dry Dock Co., Can. Composite steam barge for Edward Smith, of Brewers Mills, Ont.; length over all, 112 ft.; approximate value, $16,000; estimated gross tonnage, 210; fore and aft compound, single screw engine of 125 H'. P.; one Clyde boiler. Wooden pleasure yacht for Wilson Kingston, Ont., Miller estate, Pittsburg, Pa.; length over all, 53 ft.; approximate value, $5,500; estimated gross tonnage, 21; triple expansion, single screw engine of 125'H. P.; Davis safety water tube boiler. Wlooden passenger steamer for stock; length over all, 76 ft.; approx- imate value, $6,000; estimated gross tonnage, 108; fore and aft compound, single screw engine of 140 H. P.; Da- vis safety water tube boiler. Wooden pleasure yacht for western inland lakes; length over all, 30. ft; approximate value, $800; 6 gross tons; double, high pressure single screw en- gine of 10 H. P:; Davis satety water tube boiler. Wiooden pleasure yacht for J. Smith, Kingston, Ont.; length over all, 34 ft.; approximate value," $1,500; 9 gross tons; single screw gasoline motor of 20 342, Rebuilding of steamer Isleway, wood- en, burned July, 1908; owned by the Isleway Fish and Game Club, Mon- treal; orginal value, $4,000; cost of re- pairs, $850. A new Clyde boiler will also be installed at a cost of $950. Empire Shin Building Co., Buffalo, : Ny: Steel drill boat for the Buffalo - Dredging Co., Buffalo, N. Y.; length over: all; 137 ft. 6 in.3° approximate value, $50,000; one Scotch boiler. Steel sand suction steamer for the Builders' Supply & Sand Co., of Erie, Pa.; approximate value, $40,000; two single engines with 150 H. P.; Scotch boiler. Steel drill boat for the Empire En- gineering Corporation, of New York; length over all, 137 ft. 6 in.; approxi- maté value, $50,000; one Scotch boiler. FP. H. Fitzgibbons Boiler Co., Ogdens- burg, 'N. Y. One pair marine boilers one for the TAE Marine REVIEW steamer Fred Mercur, owned by the George Hall Coal Co., Ogdensburg, N. Y.; 7 ft. in diameter and 14 ft. 6 in. in length, of the 'horizontal ma- rine type. " THE SEA-GOING TUG MARY F. SCULLY, The Mary F. Scully, the powerful sea-going tugboat shown in the ac- companying photograph, was recent- ly completed at the yards of the Staten Island Shipbuilding Co. for the Scully Towing Line of New York, and is 45 of steam and hand steering gear, steam windlass on the main deck with a capstan on the forecastle, deck. In the engine. room all the pumps are independent and of large. capacity. There is also a feed water heater. The vessel is lighted throughout by. electricity, the dynamo being installed in the engine room, the plant includ- ing a searchlight and tell-tale for run- ning lights. The boiler, which is of the Scotch marine type, is 16 feet 6 inches in diameter and 12 feet in length, and is the largest boiler ever THE NEW _ SEA-GOING TUG BUILDING ,CO., now in service. Her general dimen- sions:are: . Length, 180 ft.; beam, 30 ft, and depth, 19 ft. Her propelling machinery consists of one set of triple expansion engines, having cylinders of 17-inch, 27-inch and 45-inch diame- ter, by 36-inch stroke. They indicate 1,200 horsepower. The Mary F. Scully has been de- signed by the builders especially for long dstance towing, the design be- ing based on experience gained in the 'construction of large tugboats of this type. The sides forward have. been carried up to a steel: deck which is a continuation of the house deck and which is carried back for a distance of 37 feet from the stem, this arrange- ment allowing the vessel to proceed without regard to any ordinary stress of weather. As a further help to nav- igation in. severe weather. an. inside passageway has been arranged on the main deck so that the crew can op- erate the vessel without being exposed. The auxiliaries consist, on the deck, FOR THE SCULLY TOWING MARY. F... SCULLY, BUILT" BY THE STATEN ISLAND SHIP LINE. put into a tugboat. To insure suf- ficient steam at all times under all conditions a forced draft apparatus with a Sirocco blower, driven by a steam turbine, is being used. In the boiler room is a donkey boiler of suf- ficient size to furnish steam to all aux- iliaries. The main boiler carries a working pressure of 180 pounds. The most striking feature of the boat, however, is her great coal ca- pacity. With bunkers full the Mary F. Scully can steam for three weeks at full speed and have a steaming radius of 5,000 miles. Nearly all of the 400 tons of coal, her capacity, can be stowed in a large cross bunker. The builders are to be congratulated on the addition of the Mary F. Scully to the large fleet of sea-going tugs they have already built for service, and the Scully Towing Line on the acquisition of this vessel to their fleet and their enterprise in placing such a'large and costly tugboat in os general towing business. -