Reports have surfaced that Russian billionaire Roman Abramovich is the proud owner of the 557-foot ship, which Blohm + Voss Industries would not confirm.
"Our company is not allowed to talk about it," a company representative said.
Regardless of the owner, the Eclipse is now in first place on the list of the world's largest yachts. It reportedly features a missile-detection system, two helicopter landing pads, a swimming pool and a submarine that doubles as an escape pod.
It also features an armor-plated master suite, as well as bullet-proof windows to keep its master and commander safe.
According to London's Daily Mail, the Eclipse was designed to overshadow the world's former largest yacht, a 525-foot super-cruiser owned by the Sheikh of Dubai.
Here's a look at the remaining nine of the Top 10 largest yachts in the world.
2. The Dubai, 524 feet long
3. Al Said, 508 feet long
4. Prince Abdulaziz, 482 feet long
5. El Horriya, 475 feet long
6. Al Salamah, 456 feet long
7. Rising Sun, 454 feet long
8. Al Mirqab, 436 feet long
9. Octopus, 413 feet long
10. Savarona, 408 feet long