It received the official name of Super Transporter early on; however, the name Beluga, a whale it resembles, gained popularity and has since been officially adopted. The Beluga XL, based on the Airbus A330 with similar modifications and dimensions, was developed by Airbus to replace the type in January 2020. Several major aircraft manufacturers are multinational, and it is not unusual for them to have plants in widely separated locations. Airbus is unique in that although it is today a standalone multinational corporation, it was originally a consortium formed by the major British, French, German, and Spanish aerospace companies. The geographic location of Airbus manufacturing is not only influenced by cost and convenience; it is also a matter of aviation history and national interest. Historically, each of the Airbus partners makes an entire aircraft section, which would then be transported to a central location for final assembly; even after the integration of Airbus into a single firm, the arrangement remained largely the same, with Airbus partners becoming subsidiaries or contractors of the multinational pan-European company. The details vary from one model to another, but the general arrangement is for the wings and landing gear to be made in the UK, the tail and doors in Spain, the fuselage in Germany, and the nose and centre-section in France, with final assembly in either Toulouse, France; Hamburg, Germany; or Seville, Spain. The A300-600ST Beluga shares many design similarities, although substantially differing in appearance, to the Airbus A300 upon which it was based. The wings, engines, landing gear, and the lower part of the fuselage remain identical to those used on the conventional A300, while the upper part of the fuselage forms an enormous horseshoe-shaped structure 7.7 m (25 ft) in diameter. In comparison with the Super Guppy, the payload was more than doubled and the volume increased by more than 30 per cent. The General Electric CF6-80C2 turbofan engines used are slightly uprated from those used on the standard A300 as well. The vertical stabilizer uses a modified Airbus A340 fin with a 1.12 m (3 ft 8 in) base extension while the tailplane was strengthened and fitted with auxiliary fins to maintain directional stability. The tailplane trim tank was also deleted. Number built 5 For more details on the development, design and operational history, click here.