They assisted loggers to move Eastern White Pine timber down the wider sections of the Ottawa River.
Not only were they as sturdy as the East Coast fishing dory, but they could carry eight men while floating in only five inches of water.
[2] Even though the boats ranged in length from 22–50 feet, to turn one end-for-end needed only one pull on an oar.
White Cedar from Allumette Island in the upper Ottawa River had bent roots suitable for making into ribs.
The process of slackening, tightening the rope and adding siding planks was repeated until the boat was of proper size.
Working from the center of the boat to the stern and bow, the cross frames and supporting ribs were installed.
[4] John Cockburn's business spanned three generations to his son Albert, and then, to grandson Jack.