Octopus, currently the world's seventh largest superyacht, is owned by Paul Allen, the co-founder of Microsoft, to whom it was delivered in 2003. Octopus is the second largest superyacht that is not owned by a head of state, measuring 414 feet (126.18 meters).
Octopus sports two helicopters on the top deck (one in front and one on the back), and a sixty-three foot (19 m) tender docked in the transom (one of seven aboard). The yacht also has a pool on board, located aft on one of her upper decks, and two submarines: one operated by remote control for studying the bottom of the ocean. Side hatches at the water line form a dock for jet skis.