nearly 155
The PLA navy has more than 225,000 personnel and is thought to have as many as 70 submarines, 10 of them nuclear-powered
230
170
Reactors power submarines and many surface ships. Nuclear weapons.
Most submarines now have a single nuclear reactor. Some smaller, coastal submarines have a single diesel.
As of October 2023, India has a total of 15 operational nuclear submarines, which include both ballistic missile submarines (SSBNs) and attack submarines (SSNs). The country operates four SSBNs, known as the Arihant-class, and is in the process of expanding its fleet. Additionally, India has several nuclear-powered attack submarines, enhancing its underwater capabilities. The exact number may vary as new submarines are commissioned or undergo maintenance.
Nuclear power plants are very large fixed installations on land. There are many reactors however in the US navy ships and submarines
2,200,000 Soldiers 97 Warships 40 Submarines.
Shallow diving submarines are used for reef watching in many parts of the world.
About 435. Any consensus?
At times it sure seemed like a lot more than there actually were, but counting U.S. NATO, and Soviet submarines, around 300. That includes both attack and missile submarines, DE and Nuclear.
As of my last update in October 2023, Russia has approximately 11 operational nuclear-powered submarines. This number includes several classes, such as the Borei and Delta IV submarines, which are capable of carrying ballistic missiles. The exact number may vary due to ongoing developments and maintenance in the Russian Navy.