NameOna Class and typeMegayacht Draft3.20 m (10.5 ft) Length110 m Displacement4.1 million kg BuilderLürssen
OperatorAlisher Usmanov Tonnage5148 Launched2008 Weight4,100 tons Beam16 m
NotesCall sign ZCXS9
IMO Number 9526758
Ona, (formerly Dilbar), is a motor yacht built in 2008 by Lürssen. She is owned by Russian oligarch Alisher Usmanov and is named after his mother. With an overall length of 110.00 m (360.89 ft) and a beam of 16.00 m (52.49 ft) she is the 28th largest yachts in the world.
Ona's exterior was designed by Tim Heywood and her interior by Alberto Pinto. The yacht has a helipad on her bow.