The Seven Seas Mariner, which launched in 2001, holds a special place in cruise history as the first all-suite, all-balcony ship in the world. This vessel underwent a significant refurbishment in 2018 and has a total capacity of 700 guests in 350 suites. With a crew of 459, the Mariner offers a high crew-to-guest ratio, providing a personalized and attentive cruising experience. Its design is classic and elegant, offering a sense of intimate luxury. The ship's facilities include multiple dining venues, such as the renowned steakhouse Prime 7, as well as a serene Canyon Ranch SpaClub. 

Itineraries for the Seven Seas Mariner span the globe, offering a range of scenic voyages from Europe to Alaska. The ship is a favorite among guests who appreciate a more traditional cruising style, combined with modern conveniences and the comprehensive all-inclusive package for which Regent Seven Seas is known.