Project Diana - Heesen Yachts FOR SALE

Diana is the newest expression of our 55‑metre Steel line, a refined evolution of a platform conceived as a true blue‑water, go‑anywhere superyacht. Her stance is leaner and more assertive, with raked wheelhouse glazing that sharpens sightlines and amplifies character. Flowing superstructure contours sweep cleanly from bow to stern, underscored by Whisper Grey Awlgrip accents that enrich the mast and upperworks.

Advances include a reimagined mast that owners can personalise with bespoke accent colours, and an infinity pool seamlessly set into the aft main deck. Slimmed mullions in the main salon and skylounge heighten the glass‑to‑metal ratio, softening the threshold between the interior and the ocean. A larger bridge‑deck VIP suite enhances the accommodation plan, delivering a flexible retreat ideal for private cruising or luxury charter with multigenerational guests.

Blending a muscular aesthetic with purposeful enhancements, Diana meets the evolving expectations of 55‑metre motor yacht owners, uniting full‑displacement steel capability with long‑range explorer‑yacht poise and superyacht sophistication.

First impressions

Diana is the technical pinnacle of Heesen’s highly successful 55-metre Steel platform, the distilled outcome of Dutch engineering excellence. Built on a proven foundation refined by data from sisterships and direct market feedback, she offers certainty to owners who demand it, fusing reliable heritage with deliberate design updates that lift the class to a new benchmark. Her exceptional efficiency and low fuel consumption are forged below the waterline, where meaningful sustainability begins with superior hydrodynamics. Diana features the patented Fast Displacement Hull Form (FDHF), conceived by Van Oossanen and perfected by our engineers, an advanced low-resistance hull that unlocks class-leading capability across all sea conditions. In concert with MTU 4000 M63 (IMO Tier III) engines, she reaches a top speed of 15.5 knots and pairs frugal fuel burn with steadfast stability, delivering a smooth, quiet platform for effortless long-range cruising.

Step aboard

Diana welcomes twelve guests in six staterooms, anchored by an 86-square-metre owner’s suite, four guest cabins on the lower deck and an enhanced VIP suite on the bridge deck. The arrangement champions active, multifunctional living, reimagining the traditional beach club as a wellness-led gym so the day remains in motion from dawn to dusk. Conceived by Luca Dini Design and Architecture, the interior embraces naturalism and tactility: a quietly luxurious palette of warm whites and blonde-rust tones where light plays across texture rather than competing with bold colour. Material choices are guided by sustainability, with Alpi reconstituted timber and honed marbles delivering a refined finish with a reduced environmental footprint. Fluted and sandblasted glass introduce soft, diffused privacy throughout, while natural stone accents, including Rainforest and Camouflage marbles, lend depth and character to bathrooms and cabins. Precision defines every junction, and the layout is purpose-shaped around the rhythms of modern ownership.