
FROM
ORDINARY TO
EXTRAORDINARY
A mission-driven project that features
proven design, high-quality construction,
low emissions and competitive pricing
ERRVS ARE GREAT CONVERSION ASSETS
A Major Conversion delivers a sustainable fully-customized vessel in a shorter time frame and at a lower cost than a new build. This conversion entails a slight increase in hull LOA dimensions and a dramatic change in the use of the vessel, extending her life and improving her efficiency.
MASTER is constructed from the Kleven built Ocean Ness with the goal of being the most capable explorer yacht on the planet, purpose-built for far-flung voyages in total luxury.
Why Ocean Ness was chosen for the conversion
VOLUME: she had a large open aft deck and a clever existing layout. This means that additional living areas can easily be built on her aft deck without major structural changes to the hull.
SAFETY: she was built with high-quality standards for operation in extreme conditions
PROVEN HULL: her high, flared bow, well tested in the North Sea, ensures safety and stability in tough weather conditions.
RANGE: she had excellent fuel bunkering and tender carrying capabilities.

Thanks to the lower
costs and shorter build time than a new construction, giving a second life to Ocean Ness is not only a smart financial choice but also carries significant environmental benefit.

Massive reductions in build time CO2 emissions
To give you an idea of the numbers involved, based on generic conversions, the total CO2 emissions produced when converting an Offshore vessel are estimated to be in the range of 5,500 to 6,000 tons. A similar newbuild will, however, lead to the emission of 20,000 to 25,000 tons of CO2 during its construction. Compared to a purpose-built new yacht, MASTER will have a significantly lower lifecycle environmental footprint.
From Ocean Ness to MASTER
On arrival, Ocean Ness was stripped down to her steel hull and all existing equipment was either recycled or upcycled. The aft hull was then extended by 4m (13’) from 66m (216’) to 70m (230’) under the supervision of ICON Yachts and her Naval Architects. Voith performed flow analyses to ensure the extension’s shape and hydrodynamics were optimized for eVSP propulsion and to minimize sloshing.
Work was then started on repurposing the forward section and lower decks while building the steel superstructure for the three new decks of guest accommodations.
On delivery, MASTER will be 70m (230’) by 15m (49’) and have a volume of 2,801 Gross Tons, 1000 Gross Tons more than the original vessel.

BUILT FOR
SAFETY AND COMFORT
MASTER features double hull construction, a standard safety feature in modern shipbuilding that prevents water from penetrating the inner shell if the outer shell is compromised. In the unlikely event the outer hull is breached, MASTER is compartmentalized, minimizing potential flooding. The void space between the outer and inner “skins” is used for tankage.
MASTER has a heavy steel displacement hull up to 10.5 mm thick in critical places and her high beam-to-length ratio enhances her stability and comfort, reducing roll periods and ensuring a smooth experience for guests and crew. The electric Voith Schneider propellers and stabilization system enhance her already good design parameters.











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"Offshore vessels
like Ocean Ness are the “pick-up trucks” of the sea, built to carry extremely heavy loads".
Prior to purchasing Ocean Ness, Van Oossanen Naval Architects performed stability calculations which included computing the impact of the expected weight additions such as the new superstructure, furniture, tankage increase, tenders, etc. It turned out that the additional weight was lower than what Ocean Ness was originally designed to carry. Had these calculations shown that the vessel did not meet the strict stability and comfort requirements, Ocean Ness would not have been chosen as the platform for the conversion.
A SMARTER WAY TO GO YACHTING
From her conversion to operations, MASTER has a lower carbon footprint than almost any other similar-sized yacht in the global fleet.
SMART CHOICE
We selected the best platform vessel for the purpose.

SMART PROGRAM
Compared to new build yacht, CO2 emissions are dramatically lower.

SMART BUILD
We adhered to the top shipbuilding standards and Class regulations.

SMART PRICE
The price per Gross Ton is significantly reduced compared to a new build.

MASTER will be essentially rebuilt as a yacht adhering to the
most modern standards and compliance requirements, just the same as any new construction completed today.
At completion, the shipyard will issue a new Builder's Certificate confirming “Major Conversion by ICON Yachts” and the year she is finished. Kleven’s original Builder's Certificate will no longer be relevant.

MASTER was conceived for extreme cruising,
conservation, science, education and exploration so every feature onboard must have a purpose. Let’s find out what else makes her one of the most interesting projects under 3,000GT on the market today.






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Concept and text
Graphics
Penny Hammond-Smith
Matthieu Vuillaume
PHOTOGRAPHY, RENDERINGS AND VIDEOS
Blueiprod
Guy Fleury
Yvan Grubski
Peter Neumann
Guillaume Plisson
Dimitris Stasis
VOITH
Winch Design
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