In 2026, several Norwegian Cruise Line (NCL) ships feature indoor pools, though they are primarily found in the exclusive, upscale areas of the ship. The most prominent example is the Norwegian Luna, the fourth "Prima Class" ship launching in 2026, which features an indoor pool and hydrotherapy circuit within the Mandara Spa. Similarly, its sister ships—the Norwegian Prima, Norwegian Viva, and Norwegian Aqua—all boast stunning indoor "Vitality" pools within their Thermal Suites. For a "standard" indoor pool experience that isn't tied to the spa, the Norwegian Epic, Norwegian Breakaway, and Norwegian Getaway feature a "Solarium" area with a retractable roof that can be closed during cold or inclement weather, effectively creating an indoor pool environment. Additionally, for the ultra-wealthy, "The Haven" on almost all modern NCL ships features a private, glass-enclosed "Haven Courtyard" with its own indoor pool, hot tubs, and lounge area. If you are cruising in 2026 to cold climates like Alaska or the Baltic, choosing a ship with these "retractable roof" or "thermal suite" options is essential for enjoying the water regardless of the outside temperature.