Why mess with success when you’ve sold several megayachts in a proven series? In the case of Heesen’s 5000 Aluminium Class, the yard isn’t messing with success. Rather, its in-house naval architects and Van Oossanen Naval Architects pledge two big benefits. Starting with Project Aquamarine, in build for a 2021 delivery, buyers will see 12-percent better efficiency. In addition, they’ll see shallower draft, to bring more anchorages within reach.
The photo above is from the tank tests the team conducted. The increase in efficiency results from changing the transom design somewhat, as well as adding prop tunnels. The prop tunnels, in turn, reduce draft. Previously, the 5000 Aluminium Class yachts had a draft of 8’2” (2.51 meters). Megayachts springing from that series include VanTom and Satori, among others. Now, however, draft is closer to 7 feet (2.51 meters). That’s especially attractive for customers pursuing Bahamian cruising. (Project Aquamarine, like other Heesens, is under construction on spec.) Further preserving the shallow draft, the megayacht incorporates interceptors. Unlike conventional trim tabs, they’re blades that sit vertically in the water. They help produce lift without the drag of traditional tabs.
The new hull design offers yet another benefit. Project Aquamarine, as well as subsequent yachts, will feature twin MTU 16V 4000 M65L diesels. These powerplants meet the new, stricter IMO Tier III regulations for nitrous-oxide emissions. Reportedly, the 163-footer (49.8-meter) is therefore the first fast-cruising megayacht beneath the 500-gross-ton threshold in compliance. Simultaneously, the engines still permit the spirited speeds the series has long boasted. Anticipate a top end in the low-20-knot range.
Heesen’s longtime styling partner, Omega Architects, additionally changed the appearance of the 5000 Aluminium Class somewhat. Now, the yacht is sleeker, yet still sporty, and still characteristic of the full Heesen family. In fact, the studio borrowed the integrated hull and superstructure form from Galactica Star, delivered in 2013. Design highlights include a raised aft deck, with a combination beach club and tender garage directly beneath.
Since Project Aquamarine is for sale, buyers have time to personalize the interior. An owner’s party of 12 has staterooms spread across the lower deck and main deck. Cristiano Gatto, selected by Heesen for the project, suggests a serene Japanese theme.
Heesen Yachts https://www.heesenyachts.com/
Omega Architects http://omega-architects.com/en/
Van Oossanen Naval Architects https://www.oossanen.nl/
Cristiano Gatto Design http://www.cristianogattodesign.com/