6 THE MARINE REVIEW May, 1915 COLLINGWOOD SHIPBUILDING CO. LIMITED COLLINGWOOD—ONTARIO—CANADA STEEL and WOODEN SHIPS, ENGINES, BOILERS, CASTINCS and FORCINGCS. PLANT FITTED WITH MODERN APPLIANCES FOR QUICK WORK DRY DOCKS and SHOPS EQUIPPED TO OPERATE DAY or NIGHT on REPAIRS BUCKET DREDGE Modern Marine Boilers and Steel Ship - Building Tugs, Passenger Steamers and Special Construction Write JOHNSTON BROTHERS FERRYSBURG, MICHIGAN Please mention THE Marine REvIEw when writing to Advertisers