The cruise ship that brought Grace Kelly to Monaco for the wedding, as mentioned in the film, was the S.S. Constitution. It entered service in 1951 and was refitted in 1959, 1974 and 1980. It was featured in An Affair to Remember (1957), and also appeared in episodes of I Love Lucy (1951), Naked City (1958), and Magnum, P.I. (1980). It was retired in 1995 and sank while being towed to a scrapyard in 1997.