The SS Monte Carlo was a concrete ship launched in 1921 as the oil tanker SS Old North State. She was later renamed McKittrick. In 1932 she became a gambling and prostitution ship operating in international waters off the coast of Long Beach, California, United States, and was relocated to Coronado, California in 1936. The Monte Carlo was grounded on Coronado Island on New Year's Day 1937 during a storm and her wreck remains on the beach.
To reduce the utilization of steel during World War I, on April 12, 1918, President Woodrow Wilson approved the construction of concrete ships, overseen by the Emergency Fleet Corporation (EFC). In total, 24 ships were approved for construction. Only 12 ships were completed by the 1918 armistice. Although the remaining unbuilt ships were cancelled, a 13th and final ship was under construction at the Newport Shipbuilding Company yard in Wilmington, North Carolina. Known as the Old North State this vessel was the third Design No.