What is the water depth of sanctuary which is the site of the wreck of the first ironclad warship commissioned by the union navy?
Monitor National Marine Sanctuary: Monitor National Marine Sanctuary is the site of the wreck of the USS "Monitor", one of the most famous shipwrecks in U.S. history. USS Monitor:  Built during the American Civil War, she was the first ironclad warship commissioned by the Union Navy.
i don't know