On the St. Lawrence River the necessity for a patrol of gunboats was also very manifest, and the Government fitted out the steamer "Watertown" for such service. She was placed in command of Lieut. French, and was employed in cruising the upper part of the St. Lawrence and the lower portion of Lake Ontario, making her port of rendezvous at Kingston. The gunboat "St. Andrew," commanded by Lieut. Spencer Smith, R.N., and manned by a detachment of British man-of-warsmen, patrolled the St. Lawrence between Brockville and Gananoque. She carried five guns, and her crew were armed with the usual fighting equipment of seamen in the British navy. The steamer "Wabuno" was armed and placed in commission to cruise on the Georgian Bay, in which waters her crew performed active and vigilant service on patrol duty for several weeks. On the Niagara River and Lake Erie the steamer "W. T. Robb" was retained in commission and fitted up for service as a cruiser. In addition to the Dunnville Naval Brigade, a detachment of the St. Catharines Garrison Battery (under command of Lieut. James Wilson) was placed on board with two guns, a 9-pounder and a 12-pound howitzer, and the necessary complement of small arms. The wheel-house and cabins were covered with boiler plates, and the bulwarks strengthened by heavy planking for the protection of her crew, so that she was soon converted into a formidable craft and admirably fitted for the work she was detailed to do. This boat was kept busy patrolling the Niagara River and the lower portion of Lake Erie, and her crew did excellent night and day service during the time she was so employed. At Montreal the gunboat "Royal" was fitted out and despatched through the St. Lawrence Canals and River. She was armed with an Armstrong 12-pounder and a brass howitzer forward, and a 12-pound Armstrong gun aft. Her batteries around bows and stern were cased with iron for the protection of the men working the guns, and her wheel-house protected with sand-bags, making her secure against rifle fire. The gun-boats "Hercules" and "Canada" were also put in commission at Montreal and thoroughly outfitted for service on the lakes and river. To aid in the protection of Montreal harbor H. M. ship "Rosario" (Capt. Versturme) was despatched from Quebec to that point. She was a steam screw sloop of 673 tons and 150 horsepower, with an armament of eleven guns, and had a full complement of British sailors and marines.