At 210-feet deep with water temperatures hovering between 38 to 45°F, the Norman is one of the most challenging technical dives in Shipwreck Alley. This treacherous stretch of Lake Huron, just outside of Thunder Bay, claimed hundreds of ships throughout the 19th and early 20th century. Multifaceted wreck sites like the Norman with its huge engine, lifeboats and personal artifacts take divers back to a time when sail and steam ruled the lakes.