Navy Island National Historic Site of Canada

Navy Island was designated a National Historic Site of Canada in 1921. It is recognized because:

• the British used [it] from 1761 to 1764 as a shipyard in which to build the first British decked vessels to sail the upper lakes.
• [on the] 14 December 1837, William Lyon Mackenzie, after being defeated at Toronto, led a "Patriot" army from Buffalo to occupy Navy Island.

In 1761, the British established a shipyard on Navy Island to build ships required to transport troops and supplies to Lake Superior and Lake Huron. During Pontiac’s uprising in 1763-1764, three schooners (Boston, Gladwin and Victory) and two sloops (Charlotte and Huron) constructed at the shipyard were transported troops and supplies to the siege of Fort Detroit. The dockyard was transferred to Detroit in the late 1760’s, where the current was less swift. Navy Island also played a very significant role in the Rebellions of 1837 in Upper and Lower Canada. Following his failed attempt to seize control of the government in December 1837, William Lyon Mackenzie, leader of the Upper Canada Rebellion, fled to Buffalo. He established a “government in exile” on Navy Island. The rebels were joined by American sympathizers, and the island was soon ringed by crude fortifications against an expected invasion by British troops and Canadian militia. The swift reactions by local militia and British regulars prevented his moving to the mainland, and on 14 January 1838, facing a hopeless situation, he abandoned the island. The occupation of Navy Island lasted little more than a month, but the impact of Mackenzie’s rebellion, and a similar uprising in Lower Canada, reverberated through the colonies. The Rebellions of 1837-1838 were key events in the escalation of political conflict in Upper Canada, and played a role in the reform of the political system in both Upper and Lower Canada.