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Obsidian Charter Yacht

NOT FOR CHARTER *

This Yacht is not for Charter*

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OBSIDIAN yacht NOT for charter*

84.2m  /  276'3 | feadship | 2023.

Owner & Guests

  • Previous Yacht

Special Features:

  • Brand new for 2023
  • Interior styling by French studio Monk Design in collaboration with RWD
  • Hybrid yacht with optimized hull and HVO-fuelled generators for sustainable cruising
  • Observation lounge on her bow with double-curved glass floor-to-ceiling windows
  • Formal dining area that can be opened up as a terrace directly over the water
  • Aqua Lounge offering unique underwater vistas
  • Starlink internet enabling fast download speeds worldwide
  • Vast beach club area
  • Lloyds Register ✠ 100A1 SSC Yacht Mono, G6 [✠] LMC UMS, Hybrid Power classification

The 84.2m/276'3" motor yacht 'Obsidian' was built by Feadship in the Netherlands at their Aalsmeer shipyard. Her interior is styled by design house Monk Design and she was delivered to her owner in July 2023. This luxury vessel's exterior design is the work of Monk Design.

Guest Accommodation

Obsidian has been designed to comfortably accommodate up to 14 guests in 7 suites. She is also capable of carrying up to 27 crew onboard to ensure a relaxed luxury yacht experience.

Onboard Comfort & Entertainment

Her features include beauty salon, underwater lights, beach club, WiFi and air conditioning.

Range & Performance

Obsidian is built with a steel hull and aluminium superstructure, with teak decks. Obsidian comfortably cruises at 12 knots, reaches a maximum speed of 17 knots with a range of up to 5,500 nautical miles from her 240,000 litre fuel tanks at 12 knots. Her water tanks store around 50,000 Litres of fresh water. She was built to Lloyds Register ✠ 100A1 SSC Yacht Mono, G6 [✠] LMC UMS, Hybrid Power classification society rules.

*Charter Obsidian Motor Yacht

Motor yacht Obsidian is currently not believed to be available for private Charter. To view similar yachts for charter , or contact your Yacht Charter Broker for information about renting a luxury charter yacht.

Obsidian Yacht Owner, Captain or marketing company

'Yacht Charter Fleet' is a free information service, if your yacht is available for charter please contact us with details and photos and we will update our records.

Obsidian Photos

Obsidian Yacht

NOTE to U.S. Customs & Border Protection

Specification

M/Y Obsidian

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Feadship yacht Project 710 on sea trials

84m hybrid Feadship Obsidian delivered

Feadship 's 84.2-metre superyacht Obsidian has been delivered after outperforming expectations on sea trials in the North Sea. The project is the newest hybrid vessel to emerge from the Dutch shipyard and the first in a new generation of reduced-emission vessels.

Formerly known as Project 710, the yacht has a futuristic exterior look designed by RWD in collaboration with MONK Design and is equipped with biofuel generators. As part of Feadship's mission to produce more sustainably-focused yachts, the new project uses second-generation biodiesel (HVO) in its generators, which aims to reduce carbon emissions by up to 90 per cent compared to conventional yachts operating on fossil fuels.

The brief for Obsidian was to be more energy efficient and emit less carbon than Feadship’s first hybrid yacht, Savannah , which launched in 2015. Obsidian has 4.5 times more electrical storage capacity than Savannah with no drive shafts and no rudders, which means a significant reduction in drag. Electric drive and steering are through a pair of electric Veth contra-rotating thrusters that have been optimised for maximum efficiency and minimal vibration, dampening vibration being another key component of the brief.

One of the coolest design features is an "Aqua Lounge" with large windows below sea level, similar to the Nemo lounge on Savannah , and an asymmetrical atrium staircase leading to a lower deck dining saloon, where a wall opens to reveal a terrace that sits just 75 centimetres above sea level.

According to the shipyard, "most of the corridors and many of the rooms, as well as all of the al fresco living spaces, are not oriented on a fore and aft or athwartships axis. In fact, except for staterooms, none of the interior rooms have any 90-degree angles." This is evident by looking at the asymmetric stern where a swimming pool sits diagonally behind smoked glass.

The use of submarine anchors eliminates the need for a mooring deck forward and allows Obsidian to have a bow observation lounge with double curved glass floor-to-ceiling windows.

Powering it all is a 4.5 MWh battery bank that is charged by four generators — two larger and two smaller variable speed units based on tweaked CatC32 engines with permanent magnet alternators that deliver power as needed. Where Savannah and Lonian operated on 560 volts, the DC system on Obsidian has a 1,000-volt system because the yacht is fully powered by electricity. Obsidian should be able to cruise for 35 nautical miles at 10 knots on batteries alone and at anchor, the batteries will provide silent operation for 10-15 hours.

In testing, it was revealed that 60 per cent of the energy goes to the hotel load, which was corrected through peak load shaving, reducing HVAC demand and an improved waste heat recovery system that captures heat from the generators and AC chillers through a newly engineered heat pump system. “There are so many points of energy savings integrated on this yacht that it is hard to count,” said project manager Mark Jansen.

Using the Yacht Environmental Transparency Index (YETI) for guidance, it is estimated that Obsidian will operate with 27 per cent less total environmental impact than a yacht of similar size launched only five years ago if run on fossil fuel, and 60 per cent less when using HVO.

Beyond the technology, weight saving was a key component. For example, the louvred aft deck overhangs might at first appear a styling choice but they are all carbon fibre attached to the aluminium superstructure and require no support pillars. The results are threefold with a reduction in weight, the ability to offer new deck layout possibilities and unimpeded views.

Both of the yacht’s primary tenders are electric-powered and custom-made by Tenderworks. Four fast charging stations will allow them to be charged in the water or in the tender garage.

Construction on the new build began in 2020 she is now the 17th largest yacht delivered by the shipyard and the 17th collaboration between RWD and Feadship, following work on the 96.5-metre Faith and 71.1-metre Juice .

The delivery of Obsidian marks a significant step towards the shipyard's goal of carbon-neutral superyachts by 2030.

According to BOATPro , Feadship has 16 projects in build, including its future flagship 118-metre Project 1010 , which was seen on sea trials last year. Including 1010 and 710, the yard is also expected to deliver Project 822 and Project 823 this year.

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Feadship Delivers 84m OBSIDIAN: The Future of Superyacht Sustainability

By Frances Flannagan

84.20m OBSIDIAN is Feadship's first delivery of 2023. She represents a significant step towards Feadship's goal of producing carbon-neutral superyachts by 2030. She is the first of Feadship’s new generation of superyachts furthering carbon reduction through a variety of innovative methods.

OBSIDIAN was built with the intention to be even more energy efficient than SAVANNAH, Feadship’s ground-breaking hybrid yacht launched in 2015. Through hulls optimised at cruising speed, weight control, advancements in electric propulsion, and the ability to run engines on HVO, a non-fossil diesel fuel which reduces carbon emissions by 90%, OBSIDIAN represents the future of sustainable yachting solutions. She has 4.5 times more electrical storage capacity than SAVANNAH along with no draft shafts or rudders, preventing added drag. Whereas SAVANNAH and LONIAN operated on 560 volts, OBSIDIAN is a 1000-volt system as she is fully powered by electricity. 

A key focus for fuel savings onboard OBSIDIAN is capturing “waste” heat to use for other purposes. Waste heat is captured from the generators and from the AC chillers themselves, the AC being the largest consumer of energy. This energy is essentially carbon-free as it reuses incidental heat generated by another function. Mark Jansen, Project Manager, has recognised the success of energy saving onboard OBSIDIAN: ‘There are so many points of energy savings integrated on this yacht that it is hard to count’. 

An innovative heat pump system which transforms thermal energy from one place to another is used to pull heat from various sources. According to Jongepier, it is five times more efficient than making heat with a regular electrical heating coil. A computer system onboard helps to choose the appropriate combination of sources which translates into a number of operational modes. 

OBSIDIAN’S hull form contributes to the advanced sustainable nature of the yacht. She has a low, slim hull optimised at cruising using computational fluid dynamics (CFD). Carbon fibre has been effectively used for weight reductions, a complex engineering method which also offers new deck layout possibilities. 

The volume of OBSIDIAN is typical of that on 100m Feadships. The single level engine room leaves more scope for interior layout, and she features a total of seven staterooms. Her bold and modern exterior translates to the interior design, both penned by RWD in collaboration with MONK Design. From a spectacular Aqua Lounge to an observation lounge with floor-to-ceiling windows offering stunning views, the interior design of OBSIDIAN is just as impressive as her advanced sustainability. 

Bram Jongepier, Senior Designer at Feadship De Voogt Naval Architects, developed a sustainability index, which became known as YETI: the Yacht Environmental Transparency Index. This is a guide which shows how all of a yacht’s operations and components contribute to its carbon profile and environmental impact. This shows how Feadship goes further than just reducing CO2 emissions by addressing the overall environmental impact of its vessels. This tool is significant in relation to OBSIDIAN as it can show just how much of a step forward she is with regards to sustainability, showcasing the success of Feadship’s environmental developments. 

YETI operates on the philosophy that one cannot control what one cannot measure. The algorithms describing the environmental impact of individual components, for instance CO2 emissions, have been made freely available by Feadship to the signatories of the Water Revolution Foundation. This foundation is dedicated to driving sustainability in the superyacht industry, resulting in a Joint Industry Project (JIP) under the flag of the Water Revolution Foundation.

The YETI JIP produced a tool that is able to predict the environmental impact of an operational year in the yacht’s lifecycle. Using this tool, it is estimated that OBSIDIAN will operate with 27% less total environmental impact than a similar size yacht launched just five years ago if run on fossil fuel, and 60% less when using HVO. 

Superyachts.com would like to congratulate Feadship on the successful delivery of this ground-breaking yacht.

"There are so many points of energy savings integrated on this yacht that it is hard to count." Mark Jansen, Project Manager of OBSIDIAN

"There are so many points of energy savings integrated on this yacht that it is hard to count."

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Obsidian: Feadship’s first delivery of 2023 raises the bar on carbon reduction

Feadship is another step closer to the goal of producing carbon-neutral superyachts by 2030. The recently built 84.20-metre Obsidian is the first of Feadship’s new generation of large yachts furthering carbon reduction through hulls optimised at cruising speed instead of top speed, weight control, advancements in electric propulsion, and the ability to run engines on non-fossil diesel fuel called HVO. In fact, the yacht's trials were conducted with the generators running on this second-generation biofuel, reducing carbon emissions by 90% compared to yachts operating on fossil fuels.

The brief for the yacht was to be more energy efficient and emit less carbon than Feadship’s ground-breaking hybrid yacht, Savannah , which launched in 2015. Reducing the environmental impact by more than 30% would have been a tall order in any case, but the entire 12-month design period for Obsidian occurred at the height of a global pandemic. With Covid-19 lockdowns, none of the designers, engineers, or other parties were able to collaborate in person.

Working in parallel, Bram Jongepier, Senior Designer at Feadship De Voogt Naval Architects, developed a sustainability index, providing a great deal of guidance on how all of a yacht’s components and operations contribute to its carbon profile and environmental impact.

Reducing CO2 emissions is a top priority, but Feadship goes even further by addressing the overall environmental impact of its vessels. The emissions of nitric oxide and nitrogen dioxide (NOx), particulate matter, hydrocarbons, and the impact of building materials like steel, aluminium, fairing compounds, antifouling, teak, interior finishing, and more, are under scrutiny. This, together with CO2 emissions, is what we call environmental impact, which is calculated using life cycle assessments (LCA).

Yacht Environmental Transparency Index

Jongepier’s work became known as YETI, the Yacht Environmental Transparency Index. Operating on the philosophy that one cannot control what one cannot measure, the algorithms describing the environmental impact of CO2, NOx, particulate matter, shore power, and fuel production have been made freely available by Feadship to the signatories of the Water Revolution Foundation, a yachting industry association dedicated to driving sustainability in the superyacht industry through collaboration and innovation. This led to a Joint Industry Project (JIP) under the flag of the Water Revolution Foundation with twenty major partners in the yachting industry.

The YETI JIP produced a tool which, with data augmented now by other partners like engine manufacturers, predicts the environmental impact of a standardized operational year in the yacht’s lifecycle. Jongepier estimates that YETI effectively captures 90% of the total lifecycle of a yacht and each new build helps gather more data. It is estimated that Obsidian will operate with 27% less total environmental impact than a yacht of similar size launched only five years ago if run on fossil fuel, and 60% less when using HVO.

For Obsidian , the first step was building on innovation from the award-winning Savannah . Using Feadship’s Advanced Electrical Drive (FAED) program for diesel-electric hybrid power, Obsidian has 4.5 times more electrical storage capacity than our first hybrid yacht, Savannah . She has no drive shafts and no rudders, preventing added drag caused by these appendages. Propulsion and steering are supplied by a pair of Veth contra-rotating thrusters that deliver both functions. Veth’s experience with compact units for ships operating on rivers was seen as a perfect fit for a yacht specified for a relatively shallow draft. Feadship and Veth collaborated on computational fluid dynamics (CFD) analysis of the shapes of the drive legs and the propellors to maximize efficiency and minimize vibration, dampening vibration being another key component of the brief.

Powering it all is a 4.5 MWh battery bank that is charged by four generators — two large and two small, custom, variable speed units based on tweaked CatC32 engines with permanent magnet alternators that deliver power as needed. Where Savannah and Lonian – which launched in 2018 – operated on 560 volts, the DC system on Obsidian is a staggering 1,000-volt system because the yacht is fully powered by electricity. A total of 560 battery modules are housed in a special chilled room amidships on the tank deck, revealing another benefit of the hybrid system: The components no longer need to be adjacent. The thrusters are in the best location for steering and water flow, while the generators and their exhaust systems, batteries, and electrical switchboard are located elsewhere for optimal weight distribution and crew access. Obsidian should be able to cruise for 35 nm at 10 knots on batteries alone. At anchor, the batteries will provide silent operation for 10-15 hours.

Fuel savings

Advanced propulsion alone, however, would not result in the level of fuel savings required. When analysing Obsidian using the YETI tool, it revealed that about 60% of the energy consumed goes simply to powering the onboard lifestyle – the air conditioning, heating, hot water, lighting, cooking, entertainment electronics, pools, and laundry service. Reducing the energy needed to provide for the yacht’s “hotel” load became the target.

Several major innovations adapted for Obsidian address these target areas through peak load shaving and reducing HVAC demand through the computerized management of cooling guest and crew zones. But since making and using energy creates heat, capturing unwanted or “waste” heat to be used for other purposes became a key focus. Out of every 100kW of energy created by fossil fuel combustion in a typical internal combustion engine, only 35 to 40% is effective mechanical energy, with the rest being heat, usually discarded overboard with the water-cooling system and in the exhaust gasses. Feadship’s design and engineering team began by developing a much more comprehensive system than simply using generator cooling water to heat a swimming pool, a process that has become standard for many superyacht builders.

Considering that 25% of that "hotel" energy demand is about making heat, everything that needed heat was identified. The largest consumer was air conditioning.

The reason being that to sufficiently dehumidify the surrounding sea air, the HVAC system needs to cool incoming fresh air to about 7 degrees Celsius, but then, to keep the interior from feeling like a meat locker, heating units must warm the air to the desired temperature for each room.

Many points of energy savings

Conventional installations typically reheat with an electric heating element, but Obsidian uses waste heat for that purpose. Not only is waste heat captured from the generators, but also from the AC chillers themselves. This is not just free energy, but it is essentially carbon-free energy because it reuses incidental heat generated by another function. “There are so many points of energy savings integrated on this yacht that it is hard to count,” said Project Manager Mark Jansen.

Urged to explore all avenues, Feadship’s engineers introduced an innovative heat pump system to pull heat from various sources, including ambient sea water. Using a heat pump, which transports thermal energy (heat) from one place to another, is five times more efficient than simply making heat with a regular electrical heating coil, according to Jongepier.

An onboard computer system helps to choose seamlessly the appropriate combination of sources. This translates into the following operational modes:

  • In harbour at normal sea temperatures plugged into shore power: Heat is provided by AC compressor waste heat, augmented by the heat pump if necessary.
  • At anchor at normal sea temperature, operating on battery power: Heat provided by AC compressor waste heat, augmented by heat pump if necessary.
  • Sailing, at anchor or in harbour at normal sea temperature with generators in operation: All necessary heat provided by generator waste heat.

Because the path to carbon-neutral superyachts goes far beyond a single solution, Obsidian also involved fresh approaches to the hull form. De Voogt’s naval architects created the low, slim hull, optimized at cruising speed using computational fluid dynamics (CFD) with the final form being made into a model tested in a towing tank. Complex engineering for balance and weight reduction includes new applications for carbon fibre. The louvered aft deck overhangs, for example, are all carbon fibre attached to the aluminium superstructure and require no support pillars. This weight benefit also offered new deck layout possibilities.

For the first time in many years, Feadship is delivering a yacht with a single level engine room, which gave her designers considerably more freedom in creating the interior layout. It also lends more space for guest accommodation and features a total of seven staterooms. According to Jansen, the volume of this 84-metre yacht is typical of that on 100-metre Feadships.

The layout is just as bold and modern as the exterior profile would suggest. Both the exterior styling and interior design are by the British firm RWD, in collaboration with MONK Design.

There are surprising destination spaces such as an asymmetrical atrium staircase leading to a lower deck dining saloon with an entire wall that opens to provide a terrace view just 75 cm above sea level.

Near the stern is an Aqua Lounge where massive windows below water level offer a unique view from the nearby gym. The Aqua Lounge can also function as a cinema and even a classroom.

From decks to the interior, the design leitmotif is all about surprise – most of the corridors and many of the rooms, as well as all of the al fresco living spaces, are not oriented on a fore and aft or athwartships axis. In fact, except for staterooms, none of the interior rooms have any 90-degree angles. A hidden staircase to a study and a sunken lounge on the main deck are just two more of the unexpected interior elements. But the biggest surprise involves the use of submarine anchors. Eliminating the need for a mooring deck forward allows Obsidian to feature a fantastic interior bow observation lounge with double curved glass floor-to-ceiling windows. Access is via a main deck corridor from the guest accommodation area through the tender garage to this hidden gem.

In keeping with the carbon reduction theme, both of the yacht’s primary tenders are electric-powered and custom made by Tenderworks. Four fast charging stations installed by the yard will allow them to be charged in the water or in the tender garage.

After the sea trials it turned out that Obsidian is even more efficient than previously calculated.

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84m superyacht OBSIDIAN delivered by Feadship and raises the bar on carbon reduction

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Written by Rachel Kelly

84.2m (276’3”) new generation superyacht OBSIDIAN is the first yacht to be delivered by Feadship in 2023 and plays a significant role in the shipyard’s journey towards carbon-neutral superyacht construction by 2030.

Superyacht OBSIDIAN | photo credit Feadship

Superyacht OBSIDIAN | photo credit Feadship

Bram Jaongepier from De Voogt Naval Architects spearheaded the project which led to the development of the Yacht Environment Transparency Index . Simply put, the index and its associated data analysis tools can predict the environmental impact of a yacht across a standard year’s operations. The index predicted that superyacht OBSIDIAN will operate with up to 60% less environmental impact than a similar 5-year-old yacht, when run on HVO (non-fossil diesel fuel).

OBSIDIAN yacht built by Feadship | photo credit Feadship

OBSIDIAN yacht built by Feadship | photo credit Feadship

YETI also revealed that 60% of the energy consumed on board was not from propulsion but from the standard ‘hotel’ load including air conditioning, hot water, pools and lighting. The design team developed a comprehensive system of heat transfer to capture and reuse incidental heat, all controlled by an onboard computer system.

Superyacht OBSIDIAN | photo credit Feadship

Her naval architects have gone beyond these solutions, giving her a low slim hull and carbon fibre elements on the superstructure which offers the possibility of new deck layouts. Plus the single level engine room gave her designers considerably more freedom in creating the interior layout.

Both the exterior styling and interior design are by the British firm RWD, in collaboration with MONK Design. The inspiring spaces include an asymmetrical atrium staircase leading to a lower deck dining saloon where an entire wall opens onto a sea level terrace. Near the stern is an Aqua Lounge where massive windows below water level offer a unique view. Plus there is a fantastic interior bow observation lounge with double curved glass floor-to-ceiling windows.

Superyacht OBSIDIAN

Superyacht OBSIDIAN

In keeping with the carbon reduction theme, both the yacht’s primary tenders are electric powered, and custom made by Tenderworks. Four fast charging stations will allow them to be charged in the water or in the tender garage.

Superyacht OBSIDIAN offers expansive guest accommodation with a seven-stateroom layout.

Please contact CharterWorld - the luxury yacht charter specialist - for more on superyacht news item "84m superyacht OBSIDIAN delivered by Feadship and raises the bar on carbon reduction".

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Carbon reduction and environmental impact: Feadship delivers 84m yacht Obsidian

yacht obsidian interior

The goal is producing carbon-neutral superyachts by 2030: the recently built 84.20-metre  Obsidian  is the first of Feadship’s new generation of large yachts furthering carbon reduction through hulls optimised at cruising speed instead of top speed, weight control, advancements in electric propulsion, and the ability to run engines on non-fossil diesel fuel called HVO. In fact, the yacht’s trials were conducted with the generators running on this second-generation biofuel, reducing carbon emissions by 90% compared to yachts operating on fossil fuels.

yacht obsidian interior

The brief for the yacht was to be more energy efficient and emit less carbon than Feadship’s ground-breaking hybrid yacht,  Savannah , which launched in 2015. Reducing the environmental impact by more than 30% would have been a tall order in any case, but the entire 12-month design period for  Obsidian  occurred at the height of a global pandemic. With Covid-19 lockdowns, none of the designers, engineers, or other parties were able to collaborate in person.

yacht obsidian interior

Working in parallel, Bram Jongepier, Senior Designer at Feadship De Voogt Naval Architects, developed a sustainability index, providing a great deal of guidance on how all of a yacht’s components and operations contribute to its carbon profile and environmental impact.

Reducing CO2 emissions is a top priority, but Feadship goes even further by addressing the overall environmental impact of its vessels. The emissions of nitric oxide and nitrogen dioxide (NOx), particulate matter, hydrocarbons, and the impact of building materials like steel, aluminium, fairing compounds, antifouling, teak, interior finishing, and more, are under scrutiny. This, together with CO2 emissions, is what we call environmental impact , which is calculated using life cycle assessments (LCA).

yacht obsidian interior

Yacht Environmental Transparency Index – Jongepier’s work became known as YETI , the Yacht Environmental Transparency Index. Operating on the philosophy that one cannot control what one cannot measure, the algorithms describing the environmental impact of CO2, NOx, particulate matter, shore power, and fuel production have been made freely available by Feadship to the signatories of the Water Revolution Foundation, a yachting industry association dedicated to driving sustainability in the superyacht industry through collaboration and innovation. This led to a Joint Industry Project (JIP) under the flag of the Water Revolution Foundation with twenty major partners in the yachting industry.

yacht obsidian interior

The YETI JIP produced a tool which, with data augmented now by other partners like engine manufacturers, predicts the environmental impact of a standardized operational year in the yacht’s lifecycle. Jongepier estimates that YETI effectively captures 90% of the total lifecycle of a yacht and each new build helps gather more data. It is estimated that  Obsidian  will operate with 27% less total environmental impact than a yacht of similar size launched only five years ago if run on fossil fuel, and 60% less when using HVO.

yacht obsidian interior

For  Obsidian , the first step was building on innovation from the award-winning  Savannah . Using Feadship’s Advanced Electrical Drive (FAED) program for diesel-electric hybrid power,  Obsidian  has 4.5 times more electrical storage capacity than our first hybrid yacht,  Savannah . She has no drive shafts and no rudders, preventing added drag caused by these appendages. Propulsion and steering are supplied by a pair of Veth contra-rotating thrusters that deliver both functions. Veth’s experience with compact units for ships operating on rivers was seen as a perfect fit for a yacht specified for a relatively shallow draft. Feadship and Veth collaborated on computational fluid dynamics (CFD) analysis of the shapes of the drive legs and the propellors to maximize efficiency and minimize vibration, dampening vibration being another key component of the brief.

Powering it all is a 4.5 MWh battery bank that is charged by four generators — two large and two small, custom, variable speed units based on tweaked CatC32 engines with permanent magnet alternators that deliver power as needed. Where  Savannah  and  Lonian  – which launched in 2018 – operated on 560 volts, the DC system on  Obsidian  is a staggering 1,000-volt system because the yacht is fully powered by electricity. A total of 560 battery modules are housed in a special chilled room amidships on the tank deck, revealing another benefit of the hybrid system: The components no longer need to be adjacent. The thrusters are in the best location for steering and water flow, while the generators and their exhaust systems, batteries, and electrical switchboard are located elsewhere for optimal weight distribution and crew access.  Obsidian  should be able to cruise for 35 nm at 10 knots on batteries alone. At anchor, the batteries will provide silent operation for 10-15 hours.

Fuel savings – Advanced propulsion alone, however, would not result in the level of fuel savings required. When analysing  Obsidian  using the YETI tool, it revealed that about 60% of the energy consumed goes simply to powering the onboard lifestyle – the air conditioning, heating, hot water, lighting, cooking, entertainment electronics, pools, and laundry service. Reducing the energy needed to provide for the yacht’s “hotel” load became the target.

Several major innovations adapted for  Obsidian  address these target areas through peak load shaving and reducing HVAC demand through the computerized management of cooling guest and crew zones. But since making and using energy creates heat, capturing unwanted or “waste” heat to be used for other purposes became a key focus. Out of every 100kW of energy created by fossil fuel combustion in a typical internal combustion engine, only 35 to 40% is effective mechanical energy, with the rest being heat, usually discarded overboard with the water-cooling system and in the exhaust gasses. Feadship’s design and engineering team began by developing a much more comprehensive system than simply using generator cooling water to heat a swimming pool, a process that has become standard for many superyacht builders.

Considering that 25% of that “hotel” energy demand is about making heat, everything that needed heat was identified. The largest consumer was air conditioning.

The reason being that to sufficiently dehumidify the surrounding sea air, the HVAC system needs to cool incoming fresh air to about 7 degrees Celsius, but then, to keep the interior from feeling like a meat locker, heating units must warm the air to the desired temperature for each room.

Many points of energy savings – Conventional installations typically reheat with an electric heating element, but  Obsidian  uses waste heat for that purpose. Not only is waste heat captured from the generators, but also from the AC chillers themselves. This is not just free energy, but it is essentially carbon-free energy because it reuses incidental heat generated by another function. “There are so many points of energy savings integrated on this yacht that it is hard to count,” said Project Manager Mark Jansen.

Urged to explore all avenues, Feadship’s engineers introduced an innovative heat pump system to pull heat from various sources, including ambient sea water. Using a heat pump, which transports thermal energy (heat) from one place to another, is five times more efficient than simply making heat with a regular electrical heating coil, according to Jongepier.

An onboard computer system helps to choose seamlessly the appropriate combination of sources. This translates into the following operational modes:

  • In harbour at normal sea temperatures plugged into shore power: Heat is provided by AC compressor waste heat, augmented by the heat pump if necessary.
  • At anchor at normal sea temperature, operating on battery power: Heat provided by AC compressor waste heat, augmented by heat pump if necessary.
  • Sailing, at anchor or in harbour at normal sea temperature with generators in operation: All necessary heat provided by generator waste heat.

Because the path to carbon-neutral superyachts goes far beyond a single solution,  Obsidian  also involved fresh approaches to the hull form. De Voogt’s naval architects created the low, slim hull, optimized at cruising speed using computational fluid dynamics (CFD) with the final form being made into a model tested in a towing tank. Complex engineering for balance and weight reduction includes new applications for carbon fibre. The louvered aft deck overhangs, for example, are all carbon fibre attached to the aluminium superstructure and require no support pillars. This weight benefit also offered new deck layout possibilities.

For the first time in many years, Feadship is delivering a yacht with a single level engine room , which gave her designers considerably more freedom in creating the interior layout. It also lends more space for guest accommodation and features a total of seven staterooms. According to Jansen, the volume of this 84-metre yacht is typical of that on 100-metre Feadships.

The layout is just as bold and modern as the exterior profile would suggest. Both the exterior styling and interior design are by the British firm RWD, in collaboration with MONK Design .

There are surprising destination spaces such as an asymmetrical atrium staircase leading to a lower deck dining saloon with an entire wall that opens to provide a terrace view just 75 cm above sea level.

Near the stern is an Aqua Lounge where massive windows below water level offer a unique view from the nearby gym. The Aqua Lounge can also function as a cinema and even a classroom.

From decks to the interior, the design leitmotif is all about surprise – most of the corridors and many of the rooms, as well as all of the al fresco living spaces, are not oriented on a fore and aft or athwartships axis. In fact, except for staterooms, none of the interior rooms have any 90-degree angles. A hidden staircase to a study and a sunken lounge on the main deck are just two more of the unexpected interior elements. But the biggest surprise involves the use of submarine anchors. Eliminating the need for a mooring deck forward allows  Obsidian  to feature a fantastic interior bow observation lounge with double curved glass floor-to-ceiling windows. Access is via a main deck corridor from the guest accommodation area through the tender garage to this hidden gem.

In keeping with the carbon reduction theme, both of the yacht’s primary tenders are electric-powered and custom made by Tenderworks. Four fast charging stations installed by the yard will allow them to be charged in the water or in the tender garage.

After the sea trials it turned out that  Obsidian  is even more efficient than previously calculated.

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Comparative investigations of aftersintering of UO 2 fuel pellets

  • Theory and Processes of Formation and Sintering of Powdered Materials
  • Published: 06 May 2010
  • Volume 51 , pages 173–176, ( 2010 )

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  • V. V. Basov 1  

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The basic parameters of comparative tests of UO 2 fuel pellets produced by the technology of powder metallurgy for aftersinterability using their repeated thermal treatment (aftersintering) in different gas media, namely, with and without humidification, are presented. The results of an evaluation of the level of aftersinterability of these pellets by different procedures is presented, they are analyzed, and a substantiation of the expediency of using this operation manual for evaluating afersintering without the humidification of the gas medium developed at the OAO Machine Building Works (MSZ), Elektrostal’, Moscow oblast, is presented.

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An Acceptable Model and Related Statistical Methods for the Analysis of Fuel Densification , US Nuclear Regulatory Commission, Regulatory Guide 1.126.1978.

Freshley, M.D., Brite, D.M., Daniel, I.L., and Hart, P.E., J. Nucl. Mater , 1976, vol. 62, pp. 138–166.

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Basov, V.V., Metodika provedeniya ispytanii tabletok is dioksida urana na “dospekaemost’ “ (Procedure for Performance of the Tests of the Pellets made of Uranium Dioxide for Aftersinterability), Electrostal’: PO MSZ, 1994.

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Bakhteev, A.N., Opredelenie termicheskoi stabil’nosti geometricheskikh razmerov toplivnykh tabletok tipa “V” i “R”: Metodika vypolneniya izmerenii (Determination of Thermal Stability of Geometric Sizes for Fuel Pellets of Types “V” and “R”: Procedure of Carrying out the Measurements), Moscow: VNIINM, 1992.

Basov, V.V., Opredelenie kharacteristik termicheskoi stabil’nosti toplivnykh tabletok tipov “R”, “R-E”, “V”: Metodika (tekhnologicheskaya instruktsiya) (Determination of Characteristics of Thermal Stability of Fuel Pellets of Types “R”, “R-E”, and “V”: Procedure (Technological Instruction), Electrostal’: OAO MSZ, 1999.

Kotel’nikov, R.B., Bashlykov, S.N., Kashtanov, A.I., et al., Vysokotemperaturnoe yadernoe toplivo (HighTemperature Nuclear Fuel), Moscow: Metallurgiya, 1978.

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OAO Machine Building Works, ul. K. Marksa 12, Elektrostal’, Moscow oblast, 144001, Russia

V. V. Basov

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Original Russian Text © V.V. Basov, 2009, published in Izvestiya VUZ. Poroshkovaya Metallurgiya i Funktsional’nye Pokrytiya, 2009, No. 3, pp. 27–30.

About this article

Basov, V.V. Comparative investigations of aftersintering of UO 2 fuel pellets. Russ. J. Non-ferrous Metals 51 , 173–176 (2010). https://doi.org/10.3103/S1067821210020185

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Published : 06 May 2010

Issue Date : April 2010

DOI : https://doi.org/10.3103/S1067821210020185

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  • fuel pellets
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  • repeated thermal treatment
  • aftersintering
  • aftersinterability
  • procedure of carrying out aftersintering
  • aftersintering installation
  • stoichiometric composition
  • isothermal sintering
  • thermal shrinkage
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IMAGES

  1. Azimut LEONARDO 98 Obsidian for Sale

    yacht obsidian interior

  2. Azimut LEONARDO 98 Obsidian for Sale

    yacht obsidian interior

  3. Azimut LEONARDO 98 Obsidian for Sale

    yacht obsidian interior

  4. Azimut LEONARDO 98 Obsidian for Sale

    yacht obsidian interior

  5. Azimut LEONARDO 98 Obsidian for Sale

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  6. Obsidian Yacht

    yacht obsidian interior

COMMENTS

  1. OBSIDIAN Yacht

    The 84.2m/276'3" motor yacht 'Obsidian' was built by Feadship in the Netherlands at their Aalsmeer shipyard. Her interior is styled by design house Monk Design and she was delivered to her owner in July 2023. This luxury vessel's exterior design is the work of Monk Design.

  2. Feadship

    Both the exterior design and interior architecture and design are by the British firm RWD in collaboration with MONK design. Striving for innovation and first-class engineering, Obsidian is the perfect next step on Feadship's path toward building zero-emission superyachts by 2030. It is the first of the new generation of large yachts ...

  3. OBSIDIAN yacht (Feadship, 84.2m, 2023)

    Feadship. OBSIDIAN is a 84.2 m Motor Yacht, built in Netherlands by Feadship and delivered in 2023. Her top speed is 17.0 kn and she boasts a maximum range of 5500.0 nm when navigating at cruising speed, with power coming from four Caterpillar diesel electric engines. She can accommodate up to 14 guests in 7 staterooms, with 27 crew members.

  4. Obsidian Yacht • Unknown Billionaire $120M Superyacht

    Discover the Luxurious Obsidian Yacht: Specs, Interior, and Ownership Details. Yacht Owner Photos Location For Sale & Charter News. Name: Obsidian: Length: 84m (276ft) Guests: 12: Crew: 27: Builder: Feadship: ... The Obsidian yacht is a luxurious motor yacht built by Feadship in 2023 and designed by RWD. With her elegant and sleek design, she ...

  5. Obsidian Yacht

    Obsidian is a motor yacht with an overall length of m. The yacht's builder is Feadship from The Netherlands, who launched Obsidian in 2023. The superyacht has a beam of m, a draught of m and a volume of . GT.. Obsidian features exterior design by RWD and interior design by RWD. Up to 12 guests can be accommodated on board the superyacht, Obsidian, and she also has accommodation for 27 crew ...

  6. Feadship Obsidian Superyacht: Features, Photos & Specifications

    guest. 84.2-meter motor yacht Feadship Obsidian was built in 2023 at the Feadship shipyard. The yacht can accommodate up to 14 guests and is maintained and operated by 27 crew members. The exterior and interior design is designed.

  7. Obsidian: Feadship's first delivery of 2023 raises the bar on carbon

    Feadship Obsidian is another step closer to the goal of producing carbon-neutral superyachts by 2030. The recently built 84.20-metre Obsidian is the first of Feadship's new generation of large yachts furthering carbon reduction through hulls optimized at cruising speed instead of top speed, weight control, advancements in electric propulsion.

  8. 84m Feadship superyacht OBSIDIAN (ex Project 710) ready for sea trials

    Luxury yacht OBSIDIAN is the first in a new generation of Feadship yachts designed to reduce carbon emissions with innovations including weight control, advanced electric propulsion and generators run on HVO biodiesel fuel. We look forward to sharing details about her designer interior and features once she is running.

  9. Feadship Yacht Obsidian on the Move: Sunday Superyacht Video

    The yacht Obsidian, for 14 passengers, is noteworthy for even more reasons. Primarily, she is the first project from the Dutch builder that is going to run on biofuel. Not only will the owners have the gensets burn it, but also the fuel tanks will contain it upon delivery. ... Interior Designer: RWD, Monk Design. Related posts.

  10. Superyacht Obsidian: Feadship's Willy Wonka Design Focuses ...

    The 276-footer Obsidian recently debuted, the first delivery of the new sustainably-focused fleet. Feadship's mission for the yacht was to become more energy efficient and emit less carbon than its elder sister, the hybrid vessel Savannah, delivered in 2015. Above: Feadship's OBSIDIAN undergoing Sea Trial's in Dutch Yachting's video on ...

  11. 84m hybrid Feadship superyacht Obsidian delivered

    31 July 2023 • Written by Holly Overton. Feadship 's 84.2-metre superyacht Obsidian has been delivered after outperforming expectations on sea trials in the North Sea. The project is the newest hybrid vessel to emerge from the Dutch shipyard and the first in a new generation of reduced-emission vessels. Formerly known as Project 710, the ...

  12. Feadship Delivers 84m OBSIDIAN: The Future of Superyacht Sustainability

    OBSIDIAN was built with the intention to be even more energy efficient than SAVANNAH, Feadship's ground-breaking hybrid yacht launched in 2015. Through hulls optimised at cruising speed, weight control, advancements in electric propulsion, and the ability to run engines on HVO, a non-fossil diesel fuel which reduces carbon emissions by 90%, OBSIDIAN represents the future of sustainable ...

  13. Feadship

    Feadship is another step closer to the goal of producing carbon-neutral superyachts by 2030. The recently built 84.20-metre Obsidian is the first of Feadship's new generation of large yachts furthering carbon reduction through hulls optimised at cruising speed instead of top speed, weight control, advancements in electric propulsion, and the ability to run engines on non-fossil diesel fuel ...

  14. 84m superyacht OBSIDIAN delivered by Feadship and raises the bar on

    Simply put, the index and its associated data analysis tools can predict the environmental impact of a yacht across a standard year's operations. The index predicted that superyacht OBSIDIAN will operate with up to 60% less environmental impact than a similar 5-year-old yacht, when run on HVO (non-fossil diesel fuel).

  15. Carbon reduction and environmental impact: Feadship delivers 84m yacht

    The goal is producing carbon-neutral superyachts by 2030: the recently built 84.20-metre Obsidian is the first of Feadship's new generation of large yachts furthering carbon reduction through hulls optimised at cruising speed instead of top speed, weight control, advancements in electric propulsion, and the ability to run engines on non-fossil diesel fuel called HVO.

  16. Comparative investigations of aftersintering of UO2 fuel pellets

    The basic parameters of comparative tests of UO 2 fuel pellets produced by the technology of powder metallurgy for aftersinterability using their repeated thermal treatment (aftersintering) in different gas media, namely, with and without humidification, are presented. The results of an evaluation of the level of aftersinterability of these pellets by different procedures is presented, they ...

  17. BETA GIDA, OOO Company Profile

    Find company research, competitor information, contact details & financial data for BETA GIDA, OOO of Elektrostal, Moscow region. Get the latest business insights from Dun & Bradstreet.

  18. Interior Designers & House Decorators in Elektrostal'

    Interior Designer VS Interior Decorator: Interior designers: Create functional and appealing spaces, collaborating with professionals. Manage projects from start to finish, ensuring a smooth process. Formal education in interior design, including color schemes, materials, and CAD. Handle design and decoration, offering a comprehensive approach.

  19. New & Custom Home Builders in Elektrostal'

    Search 1,121 Elektrostal' new & custom home builders to find the best custom home builder for your project. See the top reviewed local custom home builders in Elektrostal', Moscow Oblast, Russia on Houzz.