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1990 Conversion 43 m. Expedition

$11,990,000 USD

  • $11,990,000 USD
  • Daniel Voorhees
  • Active
  • Used
  • Mega Yachts
  • 1990
  • Conversion
  • 43 m. Expedition
  • PH
  • Power
  • 141ft 1in / 43.00 m
  • 25ft 3in / 7.70 m
  • Niigata
  • 6m26afte
  • Inboard
  • Diesel
  • Steel
  • 2015-11-04
  • 2016-07-07
  • 2247221

Rugged and beautiful 43 m. global expedition yacht currently in development. Key features include:

  • 43 meter LOA / 8.5 meter Beam
  • Dynamic positioning capability
  • Ice strengthened steel hull
  • Zero-speed stabilizer system
  • Fully customized to owner requirements

This ‘hybrid’ explorer vessel benefits from the best of two worlds: Constructed on a platform of the highest quality ex-Japanese Government steel hulls, dynamic positioning capable prime mover systems with a zero-timed propulsion. With all new superstructure and bespoke fit-out utilizing the finest materials and amenities, this Ice-Class expedition vessel can take you anywhere you want to go in comfort, style and safety.

Read on for a detailed list of features, or contact the listing broker for more information and photos.

43 m. Ice-Class Global Expedition Vessel

Key summary features include:

  • 43 meter LOA / 8.5 meter Beam
  • Dynamic positioning capability
  • Ice strengthened hull
  • Zero-speed stabilizer system
  • Fully customized to owner requirements 

The foundation of this exquisite expedition craft is a Japanese built commercial vessel which is given new life with all-new fit-out including custom superstructure, electrics, systems, navigation, hotel facilities and luxury quarters for you and your guests. The result is an immensely seaworthy, fuel-efficient and reliable expeditionary yacht that is ready to take you, your family and special guests to the far corners of the earth in absolute comfort, luxury and security.

Now you can have this rugged and beautiful expedition craft in less time than it takes for new construction and at half the price, with no compromises.

To see the quality of the build process and attention to detail, you must fly in and take a look at the completed sistership sitting in the yard. You can review her here: This completed vessel is available for sale and is exquisite in every detail.

Project Details

Upon completion, the vessel will have every detail that you would expect in a new build, including:

  • ice strengthened steel hull platform
  • Very fuel-efficient Zero-timed Niigata 1100ps @ 360rpm engine
  • Dynamic Positioning systems for holding position in any water without an anchor
  • Kamome CPP bow and stern thruster
  • Kamome CPP Propeller
  • IACS standard steel and aluminum upper deck houses
  • New power generators
  • New wet muffler exhaust and scrubber systems
  • New electrical sub-distribution system
  • New water makers
  • New freshwater system
  • New sewage treatment system
  • New fuel polishing system
  • New toilet systems
  • New zero-speed stabilizer system
  • New capstans and anchor winches
  • New seawater plumbing
  • Complete interior fit-out fully customized for client
  • Fully faired and painted hull
  • Fully faired and painted deck houses
  • Teak decks throughout
  • Stainless steel railings and trim
  • Installation of owner selected / supplied navigation and communication systems
  • 2 ton Bow Thruster
  • 1.5 ton Stern Thruster / get home unit

Customization to Suit Your Cruising Objectives and Style

Not everyone has the same objectives when it comes to outfitting an expedition class superyacht. But everyone will agree on the importance of a solid, reliable foundation. We start with a platform of exceptionally maintained Japanese Government steel hulls, dynamic positioning capable prime mover systems and zero-timed main propulsion in each of the designs. From there on up, it's all according to your taste and intended usage. Whether you want or an exquisite superyacht with helipad and tenders or a toy-hauler / shadow boat to tend your circumnavigating superyacht, we can help you develop the perfect package. The general arrangement drawings shown throughout the preceding pages are ready to be thoroughly customized to your most exacting specifications.

The interior and exterior renderings can give you an idea of the scope of customization you can select, but we are happy to work with you to detail out your specific requirements, right down to your theatre system components, satellite communications, decor and your gym equipment.

She is designed to accommodate 8 guests in luxurious ensuite staterooms and 8 crew in separate accommodation areas. This combination is adjustable depending on your specific requirements

Once you’re completely satisfied with the design details, this project can be ready for adventure in just 24 months.

There are four concept versions fully developed and they include: a spectacular Beachclub version, a concept that will accommodate your two-ton helicopter and two different versions with unlimited air draft tender accommodations (for your sportfisher or sailboat).

Please review the concept drawings and renderings and then contact us for details on mixing and matching various features or creating something entirely different. Also please note that your choices are not limited to the 43 meter project currently being started. If you want something either larger or smaller, give us a call for a preliminary discussion.

Beach Club Concept: 'Optimus'

One  of  Optimus’  primary  features  is  its  roomy  Beach  Club  lounge  located  on  the  aft  main deck. Easily accessed internally or from the aft boarding platform, this area offers surround seating with table, port-side bar area, large massage platform and a forward gymnasium.

Optimus also offers an ample-sized toy garage separated from the Beach Club by a huge glass panelled wall with sliding doors. Toys can be easily launched and retrieved through large 3.5 meter fold-down terrace doors on both the port and starboard sides of the vessel. These fold down terraces also make easy work of tender birthing, marina boarding or recreational access to the sea.

Directly adjacent to the toy store is a sauna/changing room and a separate day toilet.

The large upper boat deck is perfectly suited for two low-profile 7 meter tenders. After the tenders have been launched, this area also provides a fantastic sunbathing platform for day or an evening entertainment area.

Hydraulic submersible transom platforms make it easy to embark & disembark with your scuba gear.

Shadow Craft / Toy Hauler 'Thalassa'


Thalassa’s primary feature is its ability to accommodate an 8 meter unlimited air draft tender on her port side main deck. This tender offers the opportunity for extended excursions from themother-ship, sport fishing, sailing or comfortable all-weather ship to shore operations.

In addition to the main tender, Thalassa can also carry a mini-submarine, a fleet of jet skis, a low profile 7 meter tender (or other water sport equipment) on her upper starboard-side boat deck. All are launched and retrieved by Thalassa’s 4,500 kg crane.

The starboard main deck features a shaded 35 square meter beach club with 3.5 meter fold-down side terrace allowing direct access to the sea.

When the main tender has been launched, the port side can provide a further shaded 35 sqm area by setting a canvas awning. There is also a 3.5 meter fold-down terrace to port.

Other main deck features include a 6 sqm day toilet/steam shower forward and a 4.5 sq. m. glass-walled gym aft.

Optional hydraulic submersible transom platforms make it easy to embark & disembark with your scuba gear.

Optionally, Thalassa can be configured to accommodate two unlimited air-draft tender craft. Call or write for details.

Helideck Concept Vessel 'Aether'


The key distinguishing feature of the ‘Aether’ concept is its two-ton, 75 square meter helideck perfect for an EC-120 or similarly-sized helicopter. When not in use, Aether’s helideck provides a fantastic sun- bathing platform by day and a roomy area for elegant evening starlit entertaining.

Aether can also carry two low profile 6 meter tender (or other water sport equipment) on her 70 square meter boat deck. Tenders and toys are launched and retrieved by dual synchronized beam lifts rated at 1,250 kgs.

When the main tenders have been launched, the boat deck is easily transformed
into a beachclub area complete with port and starboard 3.5 meter fold-down terraces. These terraces not only allow you and your guests direct access to the sea but can also facilitate convenient tender side boarding or dock boarding when along side.

Other main deck features include a 9 sqm day toilet/steam shower/changing room forward and a 9 sqm glass-walled gym directly behind the aft transom.

Optional hydraulic submersible transom platforms make it easy to embark & disembark with your scuba gear.


The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.

For Sale By United Yacht Sales

110 SW Atlanta Avenue
Stuart, Florida, 34994