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Features
If seven is indeed a lucky number, then Nobiskrug’s Hull No. 777 has good fortune to share.


Lady Luck

Article Specs  
Nobiskrug GmbH 219
The owners gently began to get the designers, builder and broker to think of them as a team. They hosted the next meeting at their home in Cannes to expose the design team to their casual, yet refined style. Next the owner pulled out his own sketches. "He goes to a show and sketches everything he likes," commented Neubelt. Soon a profile the owner describes as "unique and recognizable but not too extreme," began to take shape.


The salon’s center section features a clubby lounge and dining in the round facing floor-to-ceiling windows. Photography by Klaus Jordan. (Click images to enlarge)

Joining the program was Clive Golding, who had driven several high-profile Feadships before taking the helm of True Blue. He was instrumental in convincing the owners to explore the idea of a full-displacement yacht. Golding connected immediately with Newcruise on issues of ample engine-room space and with Nobiskrug on a preference for steel over aluminum for its ability to allow unsupported spaces and bigger window openings.

Nobiskrug brought to the party renowned German engineering, which manifests itself not only in an awesome two-level, three-stage compartment of engine and machinery » spaces, but also in hull design and construction methodology. "From the beginning, we wanted to make an extremely low-resistance hull, but one with significant volume and tankage," said Schäfer. "When you can get good fuel at a good price, you want to take advantage of it. Triple Seven can carry more than 46,000 gallons of fuel," he noted.


The floating spiral stairway. Photograph by Klaus Jordan. (Click image to enlarge)

The yacht’s efficiency begins with a bulbous bow and narrow entry that stays deep yet fine moving aft. The efficiency of the hull shows in her performance figures: At 100 percent power from her 16V4000 MTUs, she reaches 17 knots; cut power 15 percent, and she slows only half a knot. At 42 percent power, she makes 14 knots. At this cruising speed, she has a range of 10,000 nautical miles.


The master suite offers a simple Zen-like retreat with contrasting shapes and textures. Photograph by Klaus Jordan. (Click image to enlarge)


During the design phase, it became clear that steel was going to be problematic for welding the shapes Newcruise and the owner were busy sketching. The solution lay in a novel proposal by Managing Director Jan Ehlers to use composites as bulwarks and coachroofs. Although the yacht’s structure is entirely steel, above the level of the main deck, head steel is merely the framework to which a curvaceous, weight-saving composite skin is attached. The use of composites allows such features as triple curves on the undersides of the aft- and side-deck overheads, beautiful compound curves on the forward superstructure and the innovative carbon-fiber cover over the rescue boat. All of the built-in external furniture is formed of composite over steel framing as well. Ehlers, who is also an engineer, was involved with developing this solution for the top deck of the HDW/Lürssen build Al Salamah.

"We used the advantage of the slenderness of a steel structure and its better fire integrity and combined it with a GRP skin for freedom of shape and enhanced quality of finish. The extent to which we have used this hybrid technique on Triple Seven is unique," said Schäfer. The composite sections were typically constructed over male forms. Once all the engineering was completed, the GRP construction was actually faster than cutting and pre-bending metal and fairing the results, plus it was accomplished simultaneously outside of the main construction hall. (Click images to enlarge)

"It’s not the approach for boats with high-volume superstructures, or boats that will have stability issues," noted Ehlers, "but for this project with large open decks, it was perfect."

With suggestions for design, mechanical and interior details continuously evolving, Hilpern says the keys to the project’s success were Golding’s diplomatic skills and the addition of surveyor Charlie Baker of UK-based Consultant Marine Engineers to the team. "A lot of what we were doing with the superstructure engineering was totally new ground," said Hilpern. "Baker helped the yard work out the kinks and guided the certification process."