Navigator of the Seas arrived in 2002 and then got one of the most comprehensive overhauls in Royal Caribbean history. Her 2018 $115 million refit added the first shipboard laser-tag arena, The Blaster (an eight-storey slide and the longest waterslide at sea), a reimagined Royal Promenade, and a completely rebuilt pool deck with a dedicated kids' splash zone. Navigator is the resident ship in Los Angeles, and her popularity with West Coast families reflects how well that renovation landed.