[RayChuang88]

These types of subs are extremely dangerous because Air Independent Propulsion allows for extremely quiet running. That's why the Virginia class nuclear submarines have extensive noise-reduction measures to keep them quiet, too.

[Lower Deck]

That's why the Virginia class nuclear submarines have extensive noise-reduction measures to keep them quiet, too.

The U.S. Navy has worked hard on noise reduction for their nuclear subs since the very beginning back in the 1950s.