Named after Edward Cornwallis, the founder of Halifax, the ferry was built because of the heavy wartime traffic on the Halifax to Dartmouth ferries which had grown to 6 million passengers and 500,000 vehicles per year.
The tender was ultimately won by a Dartmouth shipbuilder Hugh D. Weagle for $93,551.
Throughout the short career of Governor Cornwallis, her superintendent's log book showed many mechanical problems, and was becoming a headache to the city of Halifax and Dartmouth.
At 4:05pm on December 22, 1944, Governor Cornwallis left the Halifax dock with 20 motor vehicles and 300-400 passengers.
When Governor Cornwallis arrived at the Dartmouth dock all the passengers were let off and the boat was towed to the beaches of Georges Island to be burned.