The vessels will be constructed in collaboration with Chantiers de l’Atlantique shipyard in Saint-Nazaire, with Ritz-Carlton reserving an option for additional builds.
The announcement comes as Ritz-Carlton prepares to launch its first superyacht, Evrima, this summer. It claims the new yachts will feature the highest space ratios at sea, with 228 suites, each with its own private terrace.
Both vessels will "showcase modern craftsmanship" and interior finishes designed by London-based architect and design firm AD Associates and lighting designer DPA.
Finland-based yacht stylist Aivan developed the exterior design of the new builds, taking inspiration from the aesthetics of private yacht design.
The company said the onboard experience would "reflect the comfort and legendary guest service for which the iconic Ritz-Carlton brand is recognised".
"Having the highest staff-to-guest ratios in the luxury cruising category, Ilma and Luminara will provide nearly one staff member for every guest," the line added.
The new superyachts will include five restaurants, six bars, a wine vault, and signature spaces found on Evrima, such as an expanded marina with a new mezzanine feature.
Other amenities include a Ritz-Carlton Spa, and a space for Ritz Kids programming. For special events, groups can enjoy a cocktail reception on the yacht’s expanded bow.
