The 49.8-meter superyacht Amare II has been delivered to her owners by the Dutch boatyard Heesen.
She was previously known as Project Electra and the handover took place after she underwent successful sea trials in the North Sea.
The Amare II is capable of travelling at 17.2 knots while in diesel mode - and can manage 10.2 knots in silent mode.
She is the second hull in the Dutch firm's 50-meter 5000 Class and the yacht-builder says her diesel-hybrid propulsion system is not only more fuel-efficient but also quieter.
The system enables the motor yacht to have four cruising modes - including silent cruising.