54' Silent-Yachts 2019



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54' Silent-Yachts 2019


Stay at Sea Forever with Solar-Powered Yacht!

Silent-Yachts’ Silent 55 Catamaran runs on 100-percent Solar Power for Weeks on End!

The Silent-Yachts Silent 55 catamaran is able to generate enough power through its high-efficiency solar cells to power both onboard amenities as well as propulsion. Translation? Like a nuclear-powered aircraft carrier that can spend huge amounts of time at sea, the 55-foot yacht can be configured to be almost entirely self-sufficient. Not only does this mean that the boat doesn’t produce any nasty exhaust, distracting operating noise, or excessive vibrations from traditional engines, it also means that it has an essentially unlimited range (as long as the sun keeps shining). For inclement weather and emergencies, there is a generator on board that can charge the battery. The yacht is even able to harness the solar-electric system to power a water maker capable of supplying as many as six staterooms.

The E-Power model, which uses two 135 kW motors to travel as fast as 14 knots. But the boat can also be configured in the slower Cruiser version or the more powerful Hybrid Power variation, which pairs two electric motors with two diesel engines. Finally, the sailing set can invest in the Sailor version, which has a mast as well as any previously mentioned motor configuration.

The customization continues inside, with the shipbuilder offering five interior layouts available that accommodate anywhere from three to six staterooms—each of which can be equipped with double or twin berths. If you’re focused on personal pampering, three of the layouts include a full-beam owner’s stateroom. A deck above, you’ll find a combination galley, saloon, and helm, where guests will spend much of their time.

Given all the problems in the world, we wouldn’t blame you for abandoning land altogether, and since the Silent 55’s has the ability to travel 100 miles a day for weeks on end without needing to stop at port, you may have found your perfect escape from reality.

The Silent-Yachts Silent 55 Catamaran is available in 5 Layout Versions!





Silent 55

Cruise Speed:


Max Speed:


Range NMI:



27' 7"

Engine Details:

E-Motors 30 kW

Engine 1:

Engine 2:

Engine Fuel:

Inboard Electric

Fuel Capacity:

264 GAL

Water Capacity:

132 GAL


  • Light weight glass sandwich composite construction, carbon reinforced
  • Resin infusion and vacuum bagging for strong and lightweight structure
  • High quality and osmosis free Vinylesther resin with high interlaminar shear strength
  • Sophisticated highly torsion resistant hull and bulkhead structure
  • Watertight bulkheads, sealed floor-sections and collision-compartments for ultimate safety
  • Foam sandwich structure of boat acts as thermal and sound insulation
  • Interior furniture acts as reinforcing light weight structure
  • Complete boat in gelcoat laminate surface
  • Built as standard in accordance with CE regulations. USCG on request.

  • 2 x 30 kW high efficiency motors
  • Cruising speed 6-7 knots, top speed approx. 11 knots
  • High-efficiency propellers on turnable saildrives – commercial version
  • Engine controls and control panels at inside and outside helm
  • Access to engine/technical compartments via c and/or via stern entrance
  • Engine-compartments ventilation: natural aeration and forced extraction
  • Generator, engine and technical compartments sound protected
  • LED-light in each technical compartment
  • 2 x 300 L fuel tank for range extender
  • Equipment includes:

     - Filtration: pre-filter, water-separator and filter

     - Fuel cut-out remote control

     - Fuel filler, aeration

     - Electric reading gauges on chart table

  • 2 rudder blades with stainless steel rudder shaft (except with turnable saildrives)
  • Epoxy tube for rudder bearings
  • Self-aligning upper and lower bearings
  • Hydraulic steering system (except with turnable saildrives)

  • 30 high-efficiency solar-panels with ~10 kWp in total for propulsion and household
  • MPPT solar charge regulators
  • Range-Extender 22 kW @ 48 V
  • Lithium Batteries 48 V, 70 kWh
  • 24 V service batteries with 50 A charger
  • Charger 80 A for 48V Batteries
  • Inverter 15 kVA - sufficient for all standard household appliances
  • Charge, consumption and capacity controls for all electric circuits

  • All hoses and pipes are marine grade
  • Fresh Water:

     - 500 L fresh water tank (1000 L as option)

     - Fresh water circuit including pressure pumps

     - Electric boilers for all showers/sinks

     - 1 hand shower on stern platform (H/C)

  • Waste Water:

     - 2 x waste water tank with electric macerator pump

  • Drainage Circuit:

     - Self-draining cockpit as per CE standards

     - Automatically activated electric bilge pump in each watertight compartment

  • Fuses and interrupters for 12, 24 and 48 V DC and 230 V AC (US Version 110 V)
  • All wiring with tin-coated copper cables of marine grade
  • All cables labelled and numbered and mounted on rails
  • All lights high quality LED
  • Main switchboard for battery level, fuel, water and blackwater levels, navigation lights
  • Shore-power connection with fuse

Layout Versions:

  • VERSION 3/3: 1 full-width (>7 m) VIP-cabin in the front, 2 VIP-cabins with en-suite bathrooms in the hulls (= 3 cabins, 3 bathrooms)
  • VERSION 4/3: port-side 2 twin-bed or double-bed cabins sharing 1 bathroom, starboard 1 VIP-cabin with en-suite bathroom, 1 full-width (>7 m) VIP-cabin in the front with en-suite bathroom and walk-in-locker (= 4 cabins, 3 bathrooms)
  • VERSION 4/4: 2 double-bed cabins with en-suite bathrooms in the front, 2 VIP-cabins with en-suite bathrooms in the hulls (= 4 cabins, 4 bathrooms)
  • VERSION 5/3: 4 twin-bed or double-bed cabins (2 in each hull) sharing 2 bathrooms, 1 full-width (>7 m) VIP-cabin in the front, (= 5 cabins, 3 bathrooms)
  • VERSION 6/4: 2 double-bed cabins with en-suite bathrooms in the front, 4 twin-bed or double-bed cabins (2 in each hull) sharing 2 bathrooms (= 6 cabins, 4 bathrooms)

All bathrooms include sink, electric toilet and separate shower. All cabins either with double bed or two single beds. Other versions on request.

General Interior:

  • Headroom in the cabins, bathrooms and corridors 2.04 m
  • Headroom in the front-cabin 2.00 m, front-cabin bathrooms/walk-in-closet 2.04 m
  • Headroom in the saloon/kitchen: 2.09 m
  • Large port lights in all cabins
  • Natural aeration and forced aspiration-system in all cabins/bathrooms
  • Interior furniture built in light weight materials covered with real wood veneers
  • Thermal insulation for excellent room climate
  • All walls lacquered or covered with wood, vinyl leather or Alcantara optic materials
  • Standard interior with mix of modern maple, teak, white wine or other veneers with white lacquered surfaces and colored floors
  • Other Interior veneers like Wengé, Palisander, Oak, Mahogany, Aniegre and Décor Materials are also standard. Special veneers and leathers on request
  • Hand rails in inox, optionally covered with leather
  • All cabin and bathroom doors in light weight material, high quality, soft closure
  • Door-locks with high quality “anti-rattle” mechanism, all drawers soft closure
  • Port lights and deck hatches in “flush deck” design and CE approved
  • All steps with anti skid surface, LED courtesy-lights


  • Vast panoramic saloon of ~ 40 m² - headroom: 2.09 m
  • Sliding saloon door and sliding window opens at full saloon-width
  • Sliding window on the starboard side
  • Sliding door and sliding windows transform the closed saloon into an open cockpit area
  • LED lights

Inside Helms - Position and Chart Table:

  • Helm-position with steering, engine controls and displays, compass
  • Large instrument console for electronic equipment
  • 2 x 230 V (US 110 V) socket, 2 x 12 V sockets
  • Helm seat for two persons (~120 cm wide)
  • 360° view from the helms-position
  • Vast storage underneath with ~120 cm long drawers

Saloon Lounge Area:

  • “L” shaped sofa with comfortable cushions, could serve as bed
  • Dining table for 8 persons


  • “U” shaped kitchen with acrylic stone worktop
  • Sink in stainless steel
  • 230 V (US 110 V) sockets on the worktop
  • Induction cook-top (4 plates)
  • Refrigerator or side-by-side refrigerator/freezer (depending on version)

General Cabins:

  • 1 large double bed or 2 single beds with slatted base
  • Maritime mattresses in PU-foam with varied densities for greater comfort and restful sleep (140 mm thick), anti-mite, anti-fungus, antibacterial, hypoallergenic
  • Storage under the bed, accessible from the side or from the top
  • Hanging lockers and lockers with shelves, storage boards (depending on version)
  • 2 x 230 V (US 110 V) sockets, 12 V and USB socket
  • LED ceiling lights and reading lights back side of the bed

Front VIP Cabin - Additionally to the above mentioned features:

  • Full-width cabin > 7 m wide
  • 1 large double bed 200 x 180 with side access with slatted base
  • Vast storage area on the bridgedeck alongside the bulkhead
  • Bathroom on port-side with large vanity-table, large shower and 230 V plugs
  • Walk-in locker on starboard with extensive hanging lockers, desk, large mirror and lockers with shelves


  • En-Suite Bathroom in “Version 3 VIP”, “Version 2/2 + 2 VIP” and “Version 4/4”
  • Sink/basin with mixer tap (H/C)
  • Locker under/above the sink/basin and other locker for various items
  • Upper cabinet with mirror
  • Non-skid flooring
  • Accessories like towel holder, soap dispenser, paper holder
  • Electric toilet
  • Separate shower (H/C) with acryl door in each bathroom
  • Storage shelf and seat in shower
  • 230 V (US 110 V) socket
  • LED spotlights

Master Bathroom (in the 3 VIP Cabins version) - Additionally to the above mentions features:

  • Generous bathroom
  • Large “king-size” shower
  • Large sink/basin
  • Additional mirror and lockers


  • Shower (H/C) in starboard transom
  • Inox handrails
  • 1 swimming ladder at transom step
  • L-Bench at the salon wall with cockpit table for 8 persons
  • All voids are accessible for ropes, fenders, cushions, etc.
  • Stairs to flybridge

Engine/Technical Compartments:

  • Access through liftable stairways
  • Sufficient space for generator and all other technical components
  • Space for a motorbike, water toys, etc. (only on “cruiser” version)
  • Sound-protected, LED-light, 230 V socket


  • 2 deck hatches for access to forward storage compartments
  • 1,500 W electric windlass (10 mm chain)
  • Composite longitudinal compression-beam, comfortable trampolines made of UV-resistant heavy duty mesh
  • Backrests on the trampoline


  • Central helm console for engine controls and navigation equipment
  • Molded U-Shaped sofa with table
  • Sun beds with flip-able backrests
  • Fixed solar-roof (optionally retractable)

Deck Fittings:

  • 10 mooring cleats total (2 x stern, 2 x mid-ship, 1 x bow on each hull)
  • 2 pad-eyes to attach the lifelines
  • 630 - 900 mm inox stanchions with inox handrail
  • Pulpit in stainless steel, bow seats with teak

Exterior Decoration:

  • Silent-Yachts logo on sides of coach roof, Model name on each hull

US Specifications:

For boats sold in USA only

  • 110 V electrical panel, 110 V sockets

*Engine hours are as of the date of the original listing and are a representation of what the listing broker is told by the owner and/or actual reading of the engine hour meters. The broker cannot guarantee the true hours. It is the responsibility of the purchaser and/or his agent to verify engine hours, warranties implied or otherwise and major overhauls as well as all other representations noted on the listing brochure.

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.

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