Chinese observers wrote that the most powerful strategic submarines are in service with two countries – Russia and the United States. The US Navy has 18 Ohio-class third-generation nuclear submarines that can carry 24 Trident II D5 nuclear missiles. These missiles can strike anywhere in the world. Russia, on the other hand, has only four Borei nuclear submarines capable of carrying 16 Bulava intercontinental nuclear ballistic missiles.
That is, the number of nuclear submarines in Russia and the United States is not the same, although the Russian Boreis are the fourth generation submarines, and the Ohio is the third. Therefore, China came to the conclusion that the United States now possesses the most advanced strategic submarine fleet.