Roes Welcome Sound is a long, narrow saltwater channel located in the Kivalliq Region of Nunavut, Canada, at the northwest end of Hudson Bay. It separates the mainland from Southampton Island, stretching approximately 290 kilometers (180 miles) in length. Its width varies considerably from about 24 kilometers (15 miles) at its narrowest to 113 kilometers (70 miles) at its widest, creating a range of open-water conditions. The sound opens south into Hudson Bay, while its northern end connects to Repulse Bay, which links east to Foxe Basin via Frozen Strait. A significant western branch is Wager Bay. The entire region is uninhabited, with the nearest settlement being Naujaat (Repulse Bay) to the north, which has a tundra climate characterized by short, cool summers and long, cold winters. For paddlers, this translates to a very remote and exposed Arctic marine environment. The sound is a known migratory path for bowhead whales, which may be encountered during seasonal movements. The area's history is tied to early Arctic exploration, having been charted by Thomas Button in 1613 and later named for Sir Thomas Roe. Given its high-latitude location, vast open-water fetch, and uninhabited shores, paddling here is an expedition-level undertaking suitable only for experienced sea kayakers prepared for cold water, significant wind exposure, and complex tidal currents influenced by the connections to Hudson Bay and Foxe Basin. There are no facilities, amenities, or established access points, underscoring the need for complete self-sufficiency.