“Octopus” is a 126 meter superyacht owned by Paul Allen, the co-founder of Microsoft. The boat was built in 2003 by the German shipbuilders Lürssen in Bremen and HDW in Kiel.“Octopus” carries two helicopters and two submarines. One of the submarines is an undersea luxury yacht, the other is a drone for studying the bottom of the ocean.The yacht has seven tenders, the largest is a 19 meter boat. Paul Allen also own the more modest 92 meter “Tatoosh”.
See also: Octopus - Tatoosh (Wikipedia)