Nautilus vs Leninskiy Komsomol
In their displacements and total sizes as well as in some other parameters the submarines "Nautilus" and "Leninski Komsomol" differ only slightly. But the Soviet submarine exceeded the "Nautilus" in the operating depth, speed, power-to-weight ratio, and specific power production.
| "Nautilus" | "Leninski Komsomol" | |
| SSN571 | K3 | |
| Beginning of work | 1947-1948 | September 1952 |
| Installation of reactor | March 1954 | September 1956 |
| Launching | January 1954 | August 1957 |
| Beginning of performance trial | September 1954 | July 1958 |
| Transfer to the navy | April 1955 | December 1958 |
| Total time of development | 7-8 years | 6 years 3 months |
| Surface displacement, t | 3180 | 3101 |
| Reserve buoyancy, % | 18 | 30 |
| Maximum length, m | 98.6 | 107.4 |
| Maximum width, m | 8.3 | 7.9 |
| Draft, m | 6.6 | 5.7 |
| Maximum under-water speed, knots | 23 | about 30 |
| Power plant capacity, hp | 13400 | 2 x 17500 |
| Operating depth, m | 210 | 240 |
| Crew, persons | 105 | 104 |
| Number of reactors | 1 | 2 |
| Reactor thermal power, MW | 55-60 (S2W reactor) | 2x70 |
| Specific mass of reactor plant, kg/hp | 64-66 | 40.6 |
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