MCTS Prescott is located on the second floor of the Coast Guard Base in Prescott, overlooking the St. Lawrence River. Its area of responsibility on the St. Lawrence River runs from the Quebec-Ontario border east of Cornwall to Kingston, through Lake Ontario to the eastern end of Lake Erie (area of Long Point), including the Welland Canal and portions of the Rideau waterway, the Trent/Severn waterway and the Ottawa River.
The station of Prescott was established in 1995, as a result of the closing of the Toronto and Cardinal Coast Guard Radio stations. Prescott first went 'on the air' in April of 1995 but the official opening was on July 7, 1995.
The Coast Guard ceased its operations at Cardinal radio station on March 29, 1995. The Toronto station on the other hand closed the following month.
Most of the equipment now housed in Prescott MCTS was taken from both Toronto and Cardinal.
Pleasure craft traffic is very heavy in the summer months which explain why MCTS Prescott usually works the most marine incidents in the Central and Arctic Region. The Thousand Islands area is also home to many small tourist vessels operators and the Kingston area is very well known for its great sailing weather (the 1976 Olympic sailing events were held there).