Silent-Yachts is proud to introduce the Silent 55 at her world debut at the 2018 Cannes
Yachting Festival (September 11-16, 2018). The Silent 55 is the first and only oceangoing solar-electric production catamaran in the world. The yacht uses silent electric propulsion for unlimited range with no noise or fumes and minimal vibration, she is self-sufficient and virtually maintenance-free. The Silent 55 is available in several power configurations to suit a variety of cruising applications. All of them stick to the Silent-Yachts philosophy of relying chiefly on solar power for propulsion and onboard power needs.



The Silent 55 that was on display in Cannes is an “E-Power” version with 2 x 135 kW motors and can reach up to 14 knots. The model can be equipped as a “Cruiser” version, with a pair of 30 kW motors or a “Hybrid Power” version with 2 x 220 hp diesel engines and two 14 kW electric motors. A “Sailor” version can be equipped with all the previously mentioned drivetrain configurations and is rigged with a mast and
sails to provide additional propulsion in fair winds.



With 30 high-efficiency solar panels rated for approximately 10 kilowatt-peak, the Silent 55 uses maximum power point tracking (MPPT) solar charge regulators and lithium batteries, which provide capacity for all-night cruising, while a 15-kVA inverter provides power for all household appliances. The systems require hardly any maintenance and produce no fumes or noise. Because of that, the operational costs of the vessels are substantially lower compared to power yachts using more traditional propulsion systems. Michael Köhler, Silent-Yachts' CEO, said “What this represents to the yachtsman, among other features, is the ability to cruise for many hours at normal speed and throughout the entire day and evening at reduced speed. Silent-Yachts sets the standard for an entirely new dynamic in yachting: No fuel. No maintenance. Pure solar-powered luxury.”



The Silent 55 is available in five different layouts ranging from three to six staterooms with three or four heads. A full-width central owner’s stateroom is the centerpiece in three of the layouts, with guest staterooms located in port and starboard hulls. All staterooms offer double or twin berths, and all heads include a separate shower. Other layouts are available on request. In all configurations, careful attention has been paid to onboard ergonomics. The staterooms, heads and saloon on the Silent 55 are all created to welcome every person into spaces that are adapted to human size and create a comfortable environment for living, even for extended cruising. Large portlights and flush deck hatches admit natural light.



On the Silent 55, the interior layout is centered on a shared onboard space, a huge 40m² combination of saloon, helm and galley, with enough space for the crew to gather. The skipper will never be lonely at the lower helm as plenty of companion seating and an aft galley will keep the crew around. Three of the layouts feature a forward owner stateroom that capitalizes on the 8.46-meter beam of the yacht for a spacious layout with a walkaround double berth. Other accommodation plans optimize the space with additional staterooms as Silent-Yachts uses a modular construction and efficient design methods that allow additional layouts at reasonable prices.



With wide side decks for safety moving fore and aft, the Silent 55 has a spacious cockpit sheltered by a large hardtop overhang, and enormous open foredeck space. In addition, the flying bridge promises to allow helmsman and guests to enjoy time together underway with superior lines of sight all around the boat. The Silent 55 is equipped with the company’s aeration system, which provides cool and fresh air to all accommodations, heads, and in the saloon. The air-flow in each space is individually adjustable and can be used when the weather conditions require the windows to be closed. In addition, a reverse-cycle heat-pump system can be used to heat the interior when necessary, ensuring all-season comfort. The insulated hull ensures efficient achievement of desired onboard temperatures.



The Silent 55 is built using vacuum-bagged resin infusion to create a lightweight glass-sandwich composite construction that has sound- and temperature-insulating qualities. The hull is reinforced with carbon fiber at stress points, and uses vinylester resin to prevent osmotic blistering.



The Silent 55 hull shape was designed using extensive tank testing for optimal efficiency. The molds were then created using CNC milling for true replication of the refined, enhanced shape in the tooling. The Silent 55 has a shape both above and below the waterline that is designed to slip through the wind and waves with minimal resistance. Designed with sealed deck sections and collision compartments for safety, the Silent 55 uses watertight bulkheads and integrated interior furniture to create a torsion-resistant hull structure.



The electrical system can allow such features as a powered aft swim platform, a 1,500-watt electric windlass, and other features yachtsmen have come to expect on world-class oceangoing cruising yachts. Because the Silent 55 is designed to range everywhere as a true ocean-going cruising yacht that is selfsufficient, she is equipped to keep her crew happy and comfortable for virtually any voyage.



It starts with the benefits of the propulsion system. The Silent 55 can cruise efficiently for up to 100 miles a day for weeks. At the same time, the arrangement of the components enables the system to power all onboard systems without need of fuel to power a generator. Because of her revolutionary design, the Silent 55 travels just with the sound of the wind, and the water streaming past the hull, with no smoke, noise, or vibration of engines.



“The generator is only used to recharge the batteries in the rare case when higher speed is required for longer periods of time or if the weather is bad for several days,” Köhler says. In addition to the ergonomics of the living spaces, the Silent 55 - thanks to her advanced conveniences -offers a comfort level that sparks peace of mind. A water-maker powered by the solar-electric system, produces enough water to supply a full six stateroom company with reasonable rate of consumption.



On the Silent 55, all onboard appliances operate on the 220/110-volt system, to which her crew might be used to from their homes. The galley has refrigerator and freezer space to sustain the crew and an efficient induction cooktop, precluding the need for carrying propane. “Under normal, average holiday conditions, the boat is self-sufficient with unlimited range without burning fuel,” Köhler says. But perhaps even more importantly, the time under way is spent enjoying the sounds of wind and water, with no fumes or vibration, with no noise but the laughter of friends and family.

Latest News

Cockwells Celebrates 25th Anniversary With Launch of 9m Modular Tender and Concept for 13m Open Catamaran Tender
As Cockwells Modern & Classic Boatbuilding celebrates its 25th year of building beautiful bespoke craft for a discerning clientele, the acclaimed British boatbuilder continues to share its unstoppable flair for distinctive design with the unveiling of its 9m Modular Tender at this year’s Monaco Yacht Show (MYS21), which takes place in the Principality from 22 to 25 September.For superyachts that require a flexible craft for use by guests and crew, Cockwells’ new 9m Modular Tender features ingeniously-designed custom modules that are lowered on board a base boat to transform it into a luxurious enclosed limousine; a fast guest transfer shuttle with jockey-style seating for up to 12 guests; a beach club with DJ station and BBQ grill; or, indeed, any other bespoke module to match precise specifications.With a proven seaworthy hull that makes for a comfortable ride, the 9m Modular Tender’s twin 200hp diesel engines possess the power to transport a small car or all-terrain vehicle at 44 knots whilst an electrically-operated integrated bow ramp allows easy boarding and loading from ship, shore and sand.Cockwells will also reveal its concept for a 13m Open Catamaran Tender at the event, which combines expansive open seating areas for relaxation with stable, fast ride characteristics to deliver the ultimate superyacht tender or luxury day boat.Based on our existing well-tried and tested catamaran hull, and paired with twin 725hp Volvo D11 engines driving Hamilton Jet drives to offer a top speed of 50 knots, this exuberant addition to Cockwells’ portfolio delivers clean lines and superyacht-quality finish to create a craft that will turn heads wherever she ventures.A bow ramp that folds hydraulically and a raising t-top Bimini which lowers electronically for stowage in the mothership’s garage can also be incorporated as optional extras.A confidential 12m version of this Open Catamaran Tender is already in build at Cockwells’ Mylor Creek Boatyard in Cornwall and is due for launch later this year.“We mark our 25th year in business as a reputable brand, a growing company that is globally respected and one of the largest and most well-established tender builders in the industry,” comments Founder & Managing Director, Dave Cockwell.Cockwells Modern & Classic Boatbuilding is based in Mylor Creek Boatyard near Falmouth in Cornwall, at the westerly edge of the UK, build bespoke superyacht tenders, motor launches and sailing yachts in any material.Credits: Cockwells Modern & Classic Boatbuilding
TWW Yachts Announced Sale of 47m 'My Secret'
My Secret is a 46.71 meter luxury motor yacht. She was built in Netherlands by Heesen Yachts and delivered in 2012. She has been just recently sold, with Hakan Altinel of Altinel Shipyards representing the buyer and David Westwood at TWW Yachts representing the seller in the deal.My Secret was asking € 19.5 million and spent about 20 months on the market.The yacht design was developed by Bannenberg & Rowell and Omega Architects.The hull is made of steel and the superstructure is made of aluminum, with a beam of 8.83 m and a draft of 2.85 m. This adds up to a gross tonnage of 491 tons.She is powered by MTU engines of 1340 hp each giving her a maximum speed of 15 knots and a cruising speed of 12 knots. My Secret's maximum range is estimated at 4200 nautical miles.She is ready to receive in six luxurious cabins up to twelve guests, surrounded by the care of nine crew members.Founded in 1978, the famous Dutch shipyard is located in Oss. Heesen Yachts during its work, has produced more than 170 yachts.
Main Engines Installed on the 60m Project Skyfall
Heesen has shared the news of the next major step in the construction of the 60m, all-aluminium Project Skyfall, YN 19959. In a complex operation over several days in September, three large mobile cranes lowered the main engines onto their mounts, and then hoisted the superstructure into place over the waiting hull. The exterior of this high-speed vessel is a sport fisherman in yacht disguise, complete with cockpit, fighting chair and storage for 40 rods was created by Frank Laupman of Omega Architects. When it came to selecting the hull colour, Heesen and Omega Architects narrowed the choice down to five, all from Awlgrip’s long-lasting palette of high performance, high gloss, durable marine coatings: Vestal White, Eggshell, Desert Tan, Ice Blue and Medium Gray.Skyfall’s owner wanted something out of the ordinary, but not too drastic. He chose ‘Desert Tan’, described by Awlgrip as “calming and low key, this is a subtle and luxurious shade. Yellowy in its base tone, it suggests a vast desert landscape where adventure beckons.” When complete in 2023, Heesen’s most powerful yacht to date will be accompanied by a custom tender, built by Vanquish to a Guido de Groot design that will mirror the mother ship down to the last brushstroke. Her Fast Displacement Hull Form is optimised for performance and efficiency and has gyro stabilisers and interceptor trim plates to maintain the correct running angle under way. SkyFall will be able to reach a top speed of 37 knots in light load conditions, thanks to the 22,000 horsepower produced by four MTU 20V4000 engines driving four Kongsberg S90 water jets.Project SkyFall will now remain in shed number nine for outfitting until Spring 2023 when she will leave the harbour of Oss for intensive trials in the North Sea.Heesen Yachts is a Dutch ship building company that specializes in custom-built superyachts in aluminium and steel from 30m to 70m in size. Founded in 1978, it has launched more than 170 yachts since its inception.Credits: Heesen Yachts
Denison Yachting Will Open Its First European Office in Monaco
American company Denison Yachting will not only attend the 29th annual Monaco Yacht Show with 47m Heesen yacht Asya, but also has announced its plans to open an office in Monaco as part of a larger European expansion; it will be the first office that Denison will open in Europe. The new Monaco office will be led by Jeremy Roche who has a respected history in the superyacht industry and the skills to lead a new team. Denison plans to open its new Monaco office in Fall of 2021.“We’re excited to build on the brand that Denison established in the United States, and to service U.S. clients who may own yachts in the Mediterranean,” commented Superyacht Director, Ben Farnborough. “It also provides the opportunity to expand Denison’s yacht management, charter division, crew placement, and brokerage reach by being on the ground in Monaco with a foot in the door in Europe.”Denison Yachting has long been a leader in the yachting industry, with a rich family history dating back to 1948 with the start of Broward Marine in Fort Lauderdale, Florida. Today, the company provides complete yachting services worldwide, from sales and charters to yacht management and new construction. Credits: Denison Yachting; Unsplash.com
Important Hull Turning for Royal Huisman’s 46m Project 405
Royal Huisman has turned the 46m performance cruiser, project 405 aka Reichel / Pugh – Nauta 151. The turning of the modern performance hull at Royal Huisman’s newbuild facilities is an important milestone in the build process. It marks the start of the outfitting, during which various carefully selected and especially developed components will be fitted to ensure that this vessel will be both extremely lightweight and – compared to existing carbon composite superyachts – very competitive in regattas.At the same time, this radical new concept will offer all the benefits associated with existing Royal Huisman yachts: comfort, low noise levels, and optimal world cruising characteristics. The modern and powerful hull shape of Royal Huisman project 405, with its straight bow, wide transom, and twin rudders, capably embodies the naval architecture and hydrodynamic design by Reichel / Pugh Yacht Design, who have an impressive reputation for creating high-performance designs. The construction on the inside is based on the optimal use of the materials. For example, the hull of project 405 is a high-grade mix of aluminum and carbon composite, utilizing a semi-automated parametric structural optimization process. During sixteen iterations that are part of the shipyard’s new “Featherlight” method, the structural weight is reduced with an admirable 11% compared to conventional methods, whilst maintaining stiffness of the hull and ensuring structural integrity. The trunk for the retractable keel, the deckhouse, guest cockpit and hardtop will all be carbon composite, and are currently being manufactured “next door”, at Rondal. The shipyard’s sister company is skillfully bringing to life, the intriguing shapes envisaged by Nauta Design, who are responsible for the yacht’s general concept, exterior and interior design.In addition, Rondal and its partners are working on optimizing the yacht’s performance by applying various innovations to the yacht’s integrated sail handling system, such as carbon electric captive winches, and the state-of-the-art Panamax carbon rig. The latter was developed with structured luff sails in mind from the outset: reducing the load on the hardware means that the rig can be significantly lighter, as well. This will be the first large newbuild yacht to launch with a configuration based on this method of rig design and engineering. Royal Huisman project 405 will be delivered to her owners in 2022. Royal Huisman is a Dutch shipyard established in 1884 in Ronduite, building and refitting custom luxury sailing and motor yachts at its shipyard in Vollenhove, the Netherlands.Credits: Royal Huisman