In 1963, a Navy Submarine Sank Mysteriously. How the Crew Died Is Horrifying.

The U.S. Navy immediately moved to prevent such as tragedy from happening again. Less than two months later it created SUBSAFE, a program designed to ensure the structural integrity of submarine hulls at pressure and, if an emergency occurred, ensure that the submarine could safely surface. It established submarine design requirements and certified construction procedures “as specific as cataloging the source of alloy for each piece of equipment that is SUBSAFE approved.”

Did a Russian Built Stealth Submarine 'Sink' a Navy Nuclear Attack Sub?

While diesel-electric boats are generally quieter than nuclear submarines, the U.S. Navy prefers atomic powered vessels because of their range, speed and endurance. The U.S. Navy’s global mission essentially mandates a vessel that can operate independently far from home waters for extended periods. Navies with a more localized mission can afford to operate short-range diesel-electric boats. While the Indian report may or may not be correct, this incident highlights the need to completely replace the Los Angeles-class with Virginia-class boats as soon as possible.