The mega-yacht known as "A" is owned by a Russian billionaire. The name is the first initial of his and his wife's first names.
There's 25,000 feet of living space and it has a top speed of 24 knots with its twin 6000 hp engines.
It cost ~$300 million and is 394 feet long; has 3 mini swimming pools, 3 speed boats, a crew of 37
and a staff of 5, costs $500,000 to fill up the gas tank, and $20 million a year to operate.