High Quality Content by WIKIPEDIA articles! Cordero Channel is a strait in British Columbia, Canada, located between the mainland and Vancouver Island, among the Discovery Islands north of the Strait of Georgia. Cordero Channel runs north of Sonora Island, East Thurlow Island, and part of West Thurlow Island. Its eastern end connects to the mouth of Bute Inlet and to Calm Channel, at Stuart Island. Its west end is marked by the mouth of Loughborough Inlet, beyond which the channel is called Chancellor Channel, which continues west to Johnstone Strait.