Unique approaches were the mark of the NWT in the 1970s. The world’s only travelling pool, “Corky the Barge”, stopped at various communities on its annual summer voyage down the Mackenzie River in the early 70’s. During the frequent stops of this above ground pool constructed aboard a river barge, qualified instructors provided swimming and water safety instruction to local residents. The success of this program prompted the GNWT to design an above-ground pool suitable for northern conditions. These seasonal pools are now a common feature in many isolated northern communities.