The 127 metre Oceanco Y721 is now transmitting as Koru via her automatic identification system (AIS) on Vesselfinder. The name is a Maori word meaning "new beginnings", and it has previously been posted on Instagram by Jeff Bezos, who is thought to have commissioned the superyacht.
The record-breaking sailing yacht is currently lying on a dock in the Port of Rotterdam awaiting sea trials. She first hit the water in August at Oceanco's Alblasserdam shipyard and was transported to Rotterdam where her trio of masts were stepped.
The project is the longest yacht to have been built in the Netherlands and the largest superyacht ever built at Oceanco.Read More/Top 10 largest sailing yachts in the world
While her design team has yet to be confirmed, she features a black hull, white superstructure and classic exterior lines, which have drawn similarities to Lürssen superyacht Eos. Initial images suggest that Koru will have a large pool on the aft deck, as well as multiple areas for relaxing across her open decks.
Previously speaking to BOAT International, an Oceanco spokesperson said: "Oceanco values the privacy and confidentiality of all our clients and prospective clients and therefore does not comment on our involvement or non-involvement in specific projects."
An excerpt from a book named Amazon Unbound also alluded to an accompanying support boat that is also under construction.