Another Tug Boat. - Ex.alderman Dobbie has just completed another tug boat, for this harbor, at the foot of West Schuyler street, which we learn by the Palladium will be launched this afternoon at 4 o'clock. This is the third steam tug built by Mr. Dobbie, and is in every way equal to the Robins and Mulford in style and capacity, and is well adapted for the service for which she is intended.
Her dimensions are, length of keel, 53 feet, deck, 66 feet; breadth of beam 12 feet, and depth of hold 6 feet 9 inches. She is supplied with a double cylinder engine, 12 inch bore and 16 inch stroke, manufactured at Buffalo. She is to be christened "J.H. Bloore," and will be commanded by Capt. Wm. H. Manwaring. The first of the tugs built by Mr. Dobbie - the N. Robins - will be engaged at the St. Clair Flats the present season.