The Ulstein CX104 class cruise ships were built between 2015 and 2020 for Lindblad Expeditions (Nat Geo) and are purpose-built expedition vessels with reinforced hulls for polar cruising. The ships feature specialized observation areas and equipment for remote destinations with a science laboratory. The class includes lecture rooms for expedition briefings and advanced navigation systems. The vessels were designed for immersive polar expeditions with comfortable accommodations.
| Ship Name | Line Name |
|---|---|
| National Geographic Endurance | Lindblad Expeditions (Nat Geo) |