SunStone Ships, the Miami base expedition cruise ship tonnage provider, has published some details about its projected Boundless class of up to 10 newbuildings.

Designed by SunStone with naval architecture completed by Danish naval architects OSK, the Boundless Class that will be able to carry between 200 and 260 passengers, will feature a distinct inverted bow, best in class energy consumption and environmental commitments, the company said in a statement.

“The elegant and luxurious interior will be designed by Steen Friis, Denmark, Tillberg Design USA, or designers of the charterer’s choice and built/installed by European interior contractors. Furthermore, all technical equipment will be delivered by well known European suppliers,” SunStone said.

The new Boundless Class is based on SunStones’ ethos, listing the following priorities:

Safety

Comfort

Environmental Responsibility

Efficiency

"Generally, the expedition cruise segment is known for its strict requirements in terms of passenger safety standards and environmental considerations, as remote locations with untouched nature are the core of the product being offered. This means ever-increasing regulations on operators, from local authorities and various international governing bodies, to improve safety and fuel efficiency, as well as other environmental considerations. In addition to the legal requirements put forth by the authorities, passengers increasingly expect operators to reduce their environmental footprint while providing a better and more luxurious onboard experience," the company said.

Even given these high standards and a competitive market dynamic, the Boundless series will exceed industry expectations with best-in-class technology and features including Polar Class (PC6), Safe Return To Port and IMO Tier III engines.

Delivery of the first Boundless vessel is expected to be Q3 2025, the company said.