Are there any differences between Atlas Ocean Voyages ships?

Although differences are minimal, a few things change from ship to ship. For example: The year each ship launched; The Main Dining Room is essentially the same on all three vessels, but it has a different name on each ship; Discovery Suites can accommodate up to 2 guests on the World Navigator and World Voyager, and 3 guests on the World Traveller. The suite layout is the same across all three ships; Interior style.