Back to top

2018 Silent Yachts

miami, Florida


SILENT - THE SOLAR HYBRID The propulsion and the energy-system on a conventionally powered Yacht


Conventional Motoryachts are powered by diesel- or gas-engines. Additionally they use to have a Generator on board to supply all household appliances.Depending on the size of the yacht, in sum 3 or 4 diesel-engines are working for propulsion and household.Also Sailing-Yachts need a diesel-engine. Depending on the operational area and the wind- and weather conditions, additionally to the sails a diesel-engine is needed for the propulsion of the boat. When anchored in a quiet bay, the diesel-engine ensures the energy-supply of the consumers.Most yachts are using gas for cooking. Its open flame heats up the interior of the yacht and gas is dangerous. On many yachts the "consumables" like water and energy are configurated in a way, that enforces the skipper to visit a marina every two or three days to charge the batteries and to buy water for shower as well as for drinking. Larger Yachts offering more luxury have watermaker, air-conditioning and generators. They do not need to got to a marina - but...The use of a combustion-engine is inevitably combined with noise, exhausts and vibrations and oily films in the water.  Is it that, what you are looking for in an otherwise quiet bay?A conventionally powered boat has a range of 300 to 500 nautical miles under diesel-engine. With a sail the range can be extended - but only when the wind is coming from the right direction and in matching force.Silent-System is the solution! Solarwave offers you a completely new experience of nature and watersports, silent and without exhausts.The only footprints you are leaving are those in the sand...Silent-Yachts has developed a system that reduces the operation-hours of diesel-engines and thus the consumption to close to zero. This system is modular and scalable. It is more simple, needs less maintenance and costs less than any conventional fuel-depending propulsion and energy-supply. It grants more luxury, comfort, independence relyability and safety.Do you want to have a "gas-free" kitchen and more comfort while on anchor? Or do you want  to go for solar-electric propulsion? Or are you the owner of a Megayacht who wants to sleep without the noise and the vibrations of permanently running generators?Whatever you want - we have the solution for you.

Basic Boat Info

Price: $1,989,045
Make: Silent Yachts
Year: 2018
Condition: Used
Category: Power
Construction: Fiberglass


Length: 55 ft / 16.76 m


Boat Class: Cruisers


COMPLETE MARINE is pleased to assist you in the purchase of this vessel. This boat is centrally listed by Palm Beach Yacht Sales.

Additional Information


• 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 – sufficient to supply E-motors and household if necessary

• Lithium Batteries 48 V – sufficient capacity for slow all-night cruising

• 24 V service batteries with 50 A charger

• Charger 80 A for 30 kWh 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 2 water pumps (for redundancy)

- electric boilers for all showers / sinks

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

- Fresh water filler with error-proof inlet

• Waste water:

445 L 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

• All pumping systems according CE regulations


• 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



• 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 25 kW high efficient synchronous motors – cruising speed 6-7 kts

• High-efficiency propellers on saildrives

• Engine controls and control panels at inside and outside helm

• Access to engine- / technical-compartments via Cabin 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



Additional Information


• Vast panoramic saloon of more than 37 m² - headroom: 2.09 m

• Window area in standing and seating eye level for all round vision

• Lifting saloon door – opens at full saloon-width – connecting saloon and cockpit

• Door in the lifting saloon door, opens separately for access to cockpit

• Sliding windows on both sides

• Lifting 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

• Helms-seat for two persons (~115 cm wide)

• 360° view from the helms-position

• Vast storage underneath with ~120 cm long drawers

Saloon Lounge Area

• "U" shaped sofa with comfortable cushions, could serve as bed (220 x 180)

• Dining table for 8 persons


• "U" shaped kitchen with acrylic stone worktop

• Sink in acrylic stone optic

• 230 V (US 110 V) sockets on the worktop

• Induction cook-top (4 plates)

• Stainless steel air-extractor above the cooktop

• Flap with access to waste bin or storage-locker

• Fridge or side-by-side fridge/ freezer (depending on version)

• Storage:

- 1 large locker with shelving (optional dishwasher)

- 1 large locker with shelving (optional washing-machine/dryer)

- 1 large locker with shelving, under-sink storage, lockers with shelves and drawers

General Cabins

• Natural aeration and forced aspiration-system in all cabins / bathrooms

• Large portlights and flush deck-hatches CE approved

• 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


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)

Other optional variations:

 VERSION 4/3: port-side 2 twin- 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- 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- or double-bed cabins (2 in each hull) sharing 2 bathrooms (= 6 cabins, 4 bathrooms)

All bathrooms incl. 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 portlights in all cabins

•Deck-hatches in aft-cabins "flush deck" design

•Deck-hatches in front-cabins "flush deck" design, shaded by the roof

•Natural aeration and forced aspiration-system in all cabins / bathrooms

•Interior furniture built in light weight materials

•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 veneer with white lacquered surfaces and old Oak colored floors. Décor panels in vinyl leather optic.

•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




Additional Information

Specifications Silent 55 page 6

Engine- / Technical Compartment

• Access through liftable stairways

• Sufficient space for generator and all other technical components

• Space for a motorbike, watertoys 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 with gipsy (10 mm chain) and capstan

• Composite longitudinal compression-beam, comfortable trampolines made of UV-resistant heavy duty mesh


• Central Helm Station with Engine Control and Navigation equipment

• Sofa with table and sun-beds

• 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

• 900 mm inox stanchions with inox handrail

• Pulpit in stainless steel, Bow Seats with teak

Exterior decoration

• Sunwave logo on sides of coach roof, Model name on each hull


For boats sold in USA only

• 110 V electrical panel, 110 V sockets


Length overall 16.70 m / 54.8´

Length waterline 16.52 m / 54,2´

Beam overall 8.46 m / 27.7´

Draft 0.64 m / 2.1´

Slenderness ratio (Lwl/Bwl) 10.08

Light displacement (EC) 14,1 tons

Water 500 L

Waste-water 475 L

Fuel 2 x 300 L

Standard engines 2 x 25 kW e-motors

CE Certification A: 12; B: 12; C: 16; D: 20


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.

Contact Us