Designed to cruise the Yukon River and carry miners in the gold rush along with their ton of supplies from Whitehorse to Dawson City they had a draft of 4 feet and navigated for 4 months of the summer before being pulled out over the winter. On the return trip they carries bags of ore and went upstream against the eight knot current which doubled the journey time! The wood fired boiler used a very large log every 40 seconds so numerous stops along the way to pick up more fuel felled from the forest! Amazing ingenuity of the 1800's!