Defense security/ Emerging acoustic techniques 

Today's submarines are in danger of becoming increasingly vulnerable as “game changers” in undersea warfare make it easier to detect them, a new report says. 

Deep sea submarines have been a key part of the United States military’s offensive and defensive missions for decades, but a significant part of their utility lies in their ability to operate stealthily. To this end, the US military has invested huge amounts of money into making submarines – in particular, the Navy’s Virginia-class nuclear submarines – quieter.

But rapid increases in computer processing power are offsetting these advances. Submarine detection techniques that do not measure sounds but rather the wake left by submarines, for example, have been known for decades.

The hunt for Red October gets easier. How submarine warfare is changing.