After a year-long delay our favorite Russian oligarch Roman Abramovich finally took delivery of the world's largest and most expensive yacht, the Eclipse (above), the other day in time to berth her in St. Barths for his big New Year's Eve bash starring the Black Eyed Peas. The yacht, which measures anywhere from 533 ft. to 557 ft. depending on reports, cost somewhere between $500 million – $1 billion, again depending on which news accounts you give credit to. In any case, the Eclipse will cost an estimated $50 million a year to maintain and each fill-up at the gas tanks will run Roman a cool $650,000. The Eclipse, built by Germany's Blohm + Voss with luxe accommodations for 30 guests and 75 crew members, was beset with problems as we noted over the summer. The yacht, which features a military-grade missile defense system, armor plating, bulletproof windows, three helipads, two swimming pools and a wellness center, is said to be paparazzi proof thanks to a special electronic shield.