Question: What is an international motorboat racing competition for powerboats organised by the Union Internationale Motonautique (UIM) and promoted by H2O Racing, hence it often being referred to as F1H2O that the 33rd season  consisted of seven races, beginning in Dubai, UAE on 4 March 2016, and ending in Sharjah? 

Context paragraphs:
American Power Boat Association: The American Power Boat Association (APBA) is a New York membership owned corporation that was created in 1903 by an act of the New York legislature as a racing association for powerboats.  It is the United States sanctioning authority for the "Union Internationale Motonautique" (UIM), the world governing body for powerboat racing.  It is the sole governing body in the United States.  The APBA sanctions races in a number of different categories including the Unlimited Hydroplanes, Inboard, Outboard Performance Craft, Stock Outboard, Modified Outboard, Pro Outboard, Outboard Drag, Offshore and Special Events classes.  Each category comprises a number of different classes.  There are also many smaller regional clubs, including South Shore Outboard Association, located in New England.

Class 1 World Powerboat Championship: The UIM Class 1 World Powerboat Championship (also known as Class 1) is an international motorboat racing competition for powerboats organised by the Union Internationale Motonautique (UIM).  It is the highest class of offshore powerboat racing in the world.

Aquabike World Championship (powerboating): The UIM-ABP Aquabike World Championship is a powerboating sports competition.  The UIM-ABP Aquabike World Championship is the premier class of jetski racing, founded in 1992.  Aquabike jetskis are personal watercraft vehicles purpose-built for racing and modified according to class.  The UIM-ABP Aquabike World Championship is organized and promoted by H2O Racing Ltd on behalf of the Union Internationale Motonautique (UIM), the governing body of powerboating and the exclusive entity recognized by the International Olympic Committee (IOC).  ABP refers to Aquabike Promotion.

Formula 1 Powerboat World Championship: The Formula 1 Powerboat World Championship (also F1) is an international motorboat racing competition for powerboats organised by the Union Internationale Motonautique (UIM) and promoted by H2O Racing, hence it often being referred to as F1H2O.  It is the highest class of inshore powerboat racing in the world, and as such, with it sharing the title of F1, is similar to Formula One car racing.  Each race lasts approximately 45 minutes following a circuit marked out in a selected stretch of water, usually a lake, river, dock, or sheltered bay.

2012 F1 Powerboat World Championship: The 2012 UIM F1 H2O World Championship was the 29th season of Formula 1 Powerboat racing.  Whilst a provisional calendar consisted of a total of nine rounds, following cancellations, an amended programme of six races, beginning in Doha, Qatar on 10 March 2012, and ending in Sharjah, UAE on 7 December 2012 was published by the UIM.  At the penultimate race of the year in Abu Dhabi, reigning champion Alex Carella successfully defended his 2011 drivers' title, the Italian becoming a double world champion for the Qatar Team.

2015 F1 Powerboat World Championship: The 2015 UIM F1 H2O World Championship was the 32nd season of Formula 1 Powerboat racing.  The season consisted of six races, beginning in Doha, Qatar on 14 March 2015, and ending in Sharjah, UAE on 18 December 2015.

2011 F1 Powerboat World Championship: The 2011 UIM F1 H2O World Championship was the 28th season of Formula 1 Powerboat racing.  The calendar consisted of seven races, beginning in Doha, Qatar on 5 March 2011, and ending in Sharjah, UAE on 16 December 2011.  Italian Alex Carella won the Drivers' World Championship, driving for the Qatar Team.

Formula 4S Powerboat World Championship: The Formula-4s Powerboat World Championship is an international inshore powerboat racing competition for powerboats organised by the Union Internationale Motonautique (UIM), hence it often being referred to as F4s.  “S” letter refers to abbreviation from 4-stroke, which means that 4-stroke boat engines are being used in this class.

2016 F1 Powerboat World Championship: The 2016 UIM F1 H2O World Championship was the 33rd season of Formula 1 Powerboat racing.  The season consisted of seven races, beginning in Dubai, UAE on 4 March 2016, and ending in Sharjah, UAE on 16 December 2016, although initial plans indicated a ten race calendar.

Union Internationale Motonautique: The Union Internationale Motonautique (UIM) is the international governing body of powerboating, based in the Principality of Monaco.  It was founded in 1922, in Belgium, as the Union Internationale du Yachting Automobile.

Supporting paragraphs: 2016 F1 Powerboat World Championship Formula 1 Powerboat World Championship
Answer: Formula 1 Powerboat World Championship