Allen's 414-foot (126 m) yacht, Octopus, was launched in 2003.
As of 2019, it was 20th on the list of motor yachts by length.
The yacht is equipped with two helicopters, a submarine, an ROV, a swimming pool, a music studio and a basketball court.
Octopus is a member of AMVER, a voluntary group ship reporting system used worldwide by authorities to arrange assistance for those in distress at sea.
The ship is also known for its annual celebrity-studded parties which Allen hosted at the Cannes film festival, where Allen and his band played for guests.
These performances included musicians such as Usher and David A. Stewart.
Octopus was also used in the search for a missing American pilot and two officers whose plane disappeared off Palau and the study of a rare fish called a coelacanth among many others.

Allen also owned Tatoosh, which is one of the world's 100 largest yachts.
In January 2016, it was reported that Tatoosh allegedly damaged coral in the Cayman Islands.
In April 2016, the Department of Environment (DoE) and Allen's Vulcan Inc. successfully completed a restoration plan to help speed recovery and protect the future of coral in this area.
Allen's 414-foot (126 m) yacht, Octopus, was launched in 2003. As of 2019, it was 20th on the list of motor yachts by length. The yacht is equipped with two helicopters, a submarine, an ROV, a swimming pool, a music studio and a basketball court. Octopus is a member of AMVER, a voluntary group ship reporting system used worldwide by authorities to arrange assistance for those in distress at sea. The ship is also known for its annual celebrity-studded parties which Allen hosted at the Cannes film festival, where Allen and his band played for guests. These performances included musicians such as Usher and David A. Stewart. Octopus was also used in the search for a missing American pilot and two officers whose plane disappeared off Palau and the study of a rare fish called a coelacanth among many others.
Allen also owned Tatoosh, which is one of the world's 100 largest yachts. In January 2016, it was reported that Tatoosh allegedly damaged coral in the Cayman Islands. In April 2016, the Department of Environment (DoE) and Allen's Vulcan Inc. successfully completed a restoration plan to help speed recovery and protect the future of coral in this area.
Paul Allen