Independence was launched in 2008, initially with a Mastervolt system. After two years of navigation in the MED area, the yacht came back to the Netherlands with the purpose to function as an instruction and demonstration yacht for WhisperPower customers and employees. In 2012, the original onboard electrical system was replaced by a new energy system manufactured by WhisperPower,  making the stay on board more comfortable and allowing owners to live on board the whole year around.

Optimized Comfort by System Design

In 2019, WhisperPower’s demonstration ship underwent a substantial technical and cosmetic refit earlier. The project was carried out between January and May by a team of experienced maritime specialists in the field of electronics, mechanics and woodworking. The yacht, which was built in 2008 in Stavoren by De Volharding,  has been equipped now with up-to-date  new navigation, communication and comfort equipment. All systems are CANbus connectable to WhisperPower’s WhisperConnect monitoring network that also enables remote reading and control. This concept is offered as an optional WhisperCare product to owners and operators of yachts, vessels, vehicles or objects without public grid connection. 

The electrical installation was already upgraded in the previous years – see  single line diagram shown below. The 14 kVA WhisperPower AC PowerCube Super Inverter provides the entire AC on-board network, even with 10 ampere shore power for example, all 230 V devices can be used. The 27 kVA Whisper generator on board dates from the old days and is equipped with an 11 kW PTO hydraulic pump for stabilization at anchor (Naiad), which is and remains handy. The Piccolo M GV/2 (4.3 kW DC) diesel generator is an excellent generator which is on average sufficient to power the on-board system and charge the 1650 Ah battery bank.(2 volt cells)

An important addition to the system are the two WhisperSolar panels (185 Wp /24 V) with the Suntrack Pro controller connected to the service battery and the Touch panel. The electric “dashboard” has been upgraded and is now more user friendly, non-electric functions have also been added, such as the air – conditioning and heating.

Resume new devices

  • SIMRAD/ YACHT CONTROL. See schematic below
  • Glass bridge Touch, 2 x 19 Inch LED panel
  • AP 44 Autopilot with NAC autopilot computer
  • HS 60 GPS compass with antenna
  • Radar Halo 3 Pulse Compression Radar
  • VHF also renewed
  • AIS transponder Easy TRX 2 – S


  • Next to the existing rear camera a FLIR infra-red night system model M232.


  • Travelvision G6 (works perfectly) for TV radio
  • Large Samsung screen 120 cm wide with new lift
  • Also, TV via WhisperCare on 4 G (Netflix!)
  • Extra wide screen in Owner’s cabin  

Monitoring and control

  • Addition of Empir bus modules for central NMEA 2000/ WhisperConnerct bus
  • 19-inch display for electrical and comfort equipment
  • 10-inch screen
  • I-phone for remote use
  • Read and operate WhisperPower, Webasto, Post Marine Heating, Exalto Wipers 

Air conditioning

Webasto Blue Cool 32,000 BTU chiller system model C 32 T, connected to 4 air handlers. Equipped with the new digital controls, also suitable for heating control.

Heating & boiler combination

  • Post Marine Heating Eco line, 15 kW – boiler works electrically if land power is present. 
  • Connected to air handlers and 3 new radiators spread over the ship. Pool-proof.
  • Control boiler and remote heating.

whisperpower independence