A vast “explorer class” superyacht built for Microsoft co-founder Paul Allen has been sold for almost GBP200m, and is now available to rent for anyone with about a GBP1m to drop for a week.

Octopus was the world’s largest yacht when she was built for Allen in 2003 and the 126-metre vessel marked a turning point in superyacht design, capable of being used for deep sea exploration as well as living a life of luxury on the high seas.

On the market since Allen’s death in 2018, the superyacht was originally listed for sale at EUR295m (GBP250m) before being reduced to EUR235m. It is believed to have sold for slightly under the asking price. The Allen family office declined to comment.

The identity of the buyer is unknown, but it is to be made available for charter via Mayfair-based yacht broker Camper & Nicholsons. The broker, which declined to comment, has not yet set a weekly rental price. However, other very large superyachts can cost as much as GBP1m a week to rent.

In 2019, Kylie Jenner, the Keeping up with the Kardashians reality TV star and cosmetics empire billionaire, spent EUR1.1m chartering the 91.5m (300ft) yacht Tranquility.

The eight-deck Octopus has 13 guest suites, including a private owner’s deck. There is also a cinema, a gym, a spa, a basketball court, a pool (which converts into a dancefloor) and a pizza oven. It features not one but two helicopters, two submarines and space for seven tenders and a large SUV. The yacht has quarters for up to 63 crew.

Allen, a keen adventurer, asked superyacht designer Espen Oino to create a yacht capable of carrying out expeditions. “It was a very ambitious brief, because none of the tenders, tools, RVs, subs, helicopters could be outside – they should all be concealed,” Oino has said.

The ship was used by the Titanic director, James Cameron, for a dive to the bottom of the 10,925 metres to the Mariana trench, the deepest point in the world.

Allen also used the ship to help to recover the bell from the British battleship HMS Hood, which was sunk by the Bismark in the North Atlantic.

“When I first stood on the bridge, I felt as though I was on a spaceship,” Allen wrote in his autobiography Idea Man. He said having a pool, basketball court, cinema, and recording studio on the boat meant “all my passions come together in one movable feast”.

“It turns out if you go 1,000 ft down in the ocean, it’s really dark, and the animals are really strange,” Allen said in 2011. “But if you put on some Pink Floyd, it’s fantastic.”

The onboard recording studio has been used by Mick Jagger, Bono, Usher and Joss Stone. Oino has said equipping the recording studio to Allen’s demands had been a particular challenge.

“Mr Allen’s interest in music was enormous and the acoustic quality was nothing less than a shore-based one,” Oino said. “There were 54 tonnes of AV/IT equipment aboard. A very complex boat in many ways. I think he loved it.”