By Daniel Kline The Royal Caribbean cruise line’s CEO explained why the company added a very different kind of ship to its fleet. With its signature brand, Royal Caribbean International (RCL) – Get Royal Caribbean Group Report has made its massive ships as much the destination as any port. If you board an Oasis-class or even a Quantum-class ship, it’s a challenge to experience everything that’s on board during a seven-day trip. Oasis-class ships, led by the brand new Wonder of the Seas, use a neighborhood concept, with one area devoted to a literal park filled with restaurants, places for live…