Only 6 Countries With Nuclear Submarines

Currently operates Los Angeles, Seawolf, and Virginia class of fast attack nuclear submarine SSN for a total of 54

And also operates 14 Ohio-class ballistic missile carrying nuclear submarines SSBNs and 4 Ohio-class cruise missile carrying nuclear submarines SSGNs

Currently operates 4 Borei, 1 Typhoon and 9 Delta class ballistic missile carrying nuclear submarines SSBNs including 7 Oscar class cruise missile carrying nuclear submarines SSGNs

And also operates 2 Yasen, 2 Sierra, 4 akula and 3 victor class fast attack nuclear submarines SSNs

It operates 4 Vanguard class ballistic missile carrying nuclear submarines SSBNs

It also operates 4 Astute class class fast attack nuclear submarine SSNs

It operates 4 Triomphant class ballistic missile carrying nuclear submarines SSBNs

It also operates 4 Rubis class and 1 Barracuda class fast attack nuclear submarine SSNs

It operates 6 Jin class ballistic missile carrying nuclear submarines SSBNs

Also operates 3 Han and 6 Shang class fast attack nuclear submarine SSNs

It operates 2 Arihant class ballistic missile carrying nuclear submarines SSBNs

It also operates 1 Akula class fast attack nuclear submarine SSNs