Shelly Larsen and Gary Anderson put a second coat of primer on the lettering across the transom of the whaleship Charles W. Morgan Monday at the Mystic Seaport H.B. DuPont Preservation Shipyard as work continues on the ship. The Morgan, the last remaining wooden whaling ship and the oldest American commercial vessel still in existence, is slated to be relaunched July 21 and embark on a tour of historic New England ports in the spring of 2014.