The propeller Pewabic, commenced in May last, for Messrs. J. T. WHITING & Co., of Detroit, by Messrs. PECK, MASTERS & Co., of this city, is nearly completed, and is now lying at the dock of GARRETSON, HOWE & Co., her agents, taking on a cargo for the Lake Superior region, upon which route the new propeller is destined to run. The Pewabic is 200 feet long, 31 feet beam, 12 1-2 feet hold, and of 750 tons burthen. When finished she will cost her owners $75,000, and will be a most elegant craft in every particular -- embodying improvements that distinguish her from every other propeller upon the lakes. She will not be completed entirely this Fall, and only so far as is necessary for the carriage of freight. She will make about three trips this Fall, and will then lay up in our port until next season during which time she will be thoroughly finished. Her upper cabin and pilot house will be grained, and her state rooms, and everything else about the craft, designed for the comfort and convenience of passengers, will be fitted up in a truly sumtuous [sic] manner.
The Pewabic's freight capacity is very great --she being able to carry 800 tons. Her engines were built at the Cuyahoga Works, and are exact counterparts of those constructed for the propeller Meteor.
The following are the Pewabic's officers:
Captain -- Geo. McKAY, formerly of the Mineral Rock.
Clerk--E. F. PRINCE, late of the Mineral Rock.
First Mate -- JOHN McKAY.
Second Mate -- WM. RANDALL
First Engineer -- R.C. JACKSON, formerly of the Mineral Rock.
Second Engineer -- ARTHUR SAWTELL.
The new propeller leaves this evening upon her first trip. We wish her bon voyage.