BIG DREDGES GO TO ST. LAWRENCE
Two of Ladder Type, Largest Built in Canada, Come From Collongwood [sic] Yard
AROUSE INTEREST ALONG DETROIT'S RIVER FRONT
Powerful Vessels Will Help in Deepening Ship Canal Below Montreal
Rating as the largest vessels of their type ever turned out of a Canadian shipyard, two powerful steel hull ladder dredgers passed Detroit Wednesday forenoon bound for Sorel, province of Quebec, where they will be employed in deepening the St. Lawrence Ship Canal below Montreal.
The vessels are designated as Dredge No. 14 and Dredge No. 15. They have just been completed at the yards of the Collingwood Shipbuilding company, Collingwood, Ont., for the department of marine and fisheries of Canada, and are intended for heavy service.
Vessels Attract Attention.
Attention of vesselmen in many of the offices along the Detroit river front was attracted to the curious-looking vessels as they passed down about 10 o'clock. Both stopped at the dock of the Pittsburgh Coal company in Sandwich, to replenish their fuel supply. The vessels are in charge of Captain J. Delaney and Captain J. W. Mawdesley, who serve as pilots on the trip through the Welland Canal and down the St. Lawrence.
Each of the vessels is 215 feet long between perpendiculars, with molded breadth of 37.5 feet and molded depth of 14 feet. They are rated as 100 A-1 in Lloyd's special dredger classification.
Each is equipped with a bucket ladder 117 feet long, with a chain of 40 buckets of 27 cubic feet capacity. With the ladder at an angle of 45 degrees, the dredge is capable of digging to a depth of 52 feet below the water level.
Engines Serve Double Purpose.
Propelling machinery of each consists of one set of triple expansion engines with cylinders having diameters of 15, 25 and 43 inches, length of piston stroke being 26 inches. The engines are so arranged as to provide driving power for propelling the vessel or for operating the chain of buckets. Additional equipment includes all the necessary hoisting, breasting and other winches, and electric light plant.
The dredges were constructed under direct supervision of representatives of the dominion department of marine and fisheries. One of the vessels was given successful trial trips at Collingwood, April 23/24, and the other on May 6, each making a showing that exceeded contract requirements. They left Collingwood last Saturday. The date of their arrival at Sorel will be determined chiefly by weather conditions which may be encountered en route.