The Last Ship,” a musical by Grammy-winning rock star Sting based on his childhood in a shipbuilding town in northeastern England, landed on Broadway with a star-studded opening. Actors Robert De Niro, Liam Neeson, Bill Pullman and Alan Cumming, along with singers Billy Joel and Debbie Harry of Blondie were on hand on Sunday night for Sting’s Broadway debut as a composer at the Neil Simon Theatre. Sing, 63, said, “I wanted to honor the community I came from. It was about time.”