Launched on February 2, 1868 at St. John, New Brunswick, the Rothesay was a 65 m. (178') long twin side-wheeler that first sailed between Fredericton and St. John before being relocated to the Montreal-to-Prescott route, where she was known as "The Greyhound of the St. Lawrence." On the evening of September 12, 1889, a serious collision occurred when the Rothesay rammed the tugboat Myra of Ogdensburg, New York, after a mix-up over passing signals. Myra sank immediately, and both her engineer and fireman were killed. The Rothesay was so badly damaged that she had to be beached. In 1901, a group from the Royal Military College in Kingston used the wreck for explosives practice, flattening her midsection, though the stern and bow remained relatively intact. Rediscovered on September 25, 1964 by the Underwater Society of Ottawa, the Rothesay has become one of Eastern Ontario's most famous shipwreck sites.