Also called carotid artery disease, carotid stenosis is caused by a buildup of plaque inside the artery wall that reduces blood flow to the brain. The process of plaque buildup is called atherosclerosis. Carotid stenosis is a major risk factor for stroke and can lead to brain damage.
Most shipbuilders in the United States are privately owned, the largest being Huntington Ingalls Industries, a multibillion-dollar defense contractor, and the oldest family owned shipyard being Colonna's Shipyard in Norfolk, VA.
At 729 feet, the S.S. Edmund Fitzgerald was the largest ship on the Great Lakes at the time of its christening in 1958. It was built by Great Lakes Engineering Works in River Rouge, Michigan and owned by the Northwestern Mutual Life Insurance Company.