Katara, one of the largest mega super yachts in the world, has slipped quietly into Falmouth harbour steaming majestically past the twin castles of St Mawes and Pendennis to her berth at A&P.

As she passed the super yacht Sherpa and then the residential vessel The World the port had approximately £800m worth of vessels within half a mile of one another.

The Qatar Royal Family owns the £300million yacht.

Speculation is rife in the yachting world about her ownership, but industry pundits say that she is either owned by the 40-year-old current Emir of Qatar Tamim bin Hamad bin Khalifa Al Thani or by Sheikh Nawaf bin Jassim Bin Jabor Al-Thani, chairman of the Katara Hospitality Group.

The yacht is shrouded in the utmost secrecy. Even as she approached Falmouth her AIS was switched off.

The breathtaking 7,922 ton yacht, built in Germany at the Lurssen yard, is a spectacular piece of engineering workmanship.

She was commissioned by a previous Emir in 2010.

Little is known about the interior of the vessel. Exterior wise she has a helicopter deck, an array of satellite communication domes, various tenders and jet skis.

She has two 9,925 hp engines giving her a top speed of 20 knots.

Since the year 150 AD, “Catara” was the first and most ancient name designated for Qatar Peninsula in geographic and historical maps.

The name “Katara” appeared in the maps in early 18th century AD in a French map of the Arabian Peninsula coast line, sea and gulf, the name was written “Katara”, instead of “Catara”.