The double deck concept was created especially for clients wanting to achieve extreme comfort with maximum space on deck. The characteristic feature of each Sunreef double decker is the additional, full-beam cabin in the front, with the panoramic view to the sea obtained thanks to the mast fitted on the enlarged flybridge. The Sunreef double deck is available in the original or NEW/MODERN version where the flybridge is uplifted, making the salon space enormous and creating additional mezzanine space where the main navigation station and coffee lounge are located.

The first double deck catamaran, the Sunreef 102 IPHARRA, was launched as a charter superyacht in April 2010. IPHARRA is the FIRST sailing catamaran in the world from a Double Deck line, and the second biggest sloop rigged catamaran of the world. According to the Sunreef philosophy, the interior design and layout arrangement have been totally submitted to the owner's suggestions who wished to obtain a practical vessel with many storage places ensuring the highest level of navigation autonomy. For charter purposes, the yacht will accommodate up to 12 guests and 4 crew.