Canadian officials will return to the Northwest Passage this summer in search of Sir John Franklin's long-lost ships, after efforts were postponed last year.
Federal searchers say they will take sonar equipment to the waters southwest of King William Island, in the Northwest Passage, in the hopes of finding the ships underwater.Federal searchers say they will take sonar equipment to the waters southwest of King William Island, in the Northwest Passage, in the hopes of finding the ships underwater. (CBC)

Parks Canada began a three-year effort in 2008 to find the famed British explorer's ships, HMS Erebus and HMS Terror, which went missing more than 160 years ago in the High Arctic....