A SUPERYACHT owned by the billionaire co-founder of Microsoft, Paul Allen, is causing a stir in Weymouth Bay.

The 303ft Tatoosh boasts two helicopter decks, a cinema and swimming pool in addition to the owner’s stateroom, nine guest staterooms, and two staff cabins.

Built by Nobiskrug in 2000, the superyacht which can accommodate 24 guests and 35 crew, underwent a refit in 2010.

Tatoosh is currently up for sale with Fraser Yachts luxury yachting company for a reported $162million.

The 26th-largest superyacht in the world was reportedly purchased by Paul Allen in 2001 for $100million.

The sale of the Tatoosh would leave Mr Allen with just one yacht: the 416ft yacht Octopus.

Octopus has also visited Weymouth and Portland and was last seen moored at Portland Port in 2005.

Tatoosh, which has a 15 knot cruising speed and a range of 5,000 nautical miles, arrived in Weymouth Bay on Christmas Day. Its last known port was Brunsbuettel, Germany.