Are America's Nuclear Submarines Obsolete?


Sebastien Roblin, National Interest: Did Sweden Make America's Nuclear Submarines Obsolete?

Nuclear-powered submarines have traditionally held a decisive edge in endurance, stealth and speed over cheaper diesel submarines. However, new Air Independent Propulsion (AIP) technology has significantly narrowed the performance gap on a new generation of submarines that cost a fraction of the price of a nuclear-powered boat.

A conventional submarine’s diesel engine generates electricity which can be used to drive the propeller and power its systems. The problem is that such a combustion engine is inherently quite noisy and runs on air—a commodity in limited supply on an underwater vehicle. Thus, diesel-powered submarines must surface frequently to recharge their batteries.

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WNU Editor: Nuclear subs are not obsolete, but the temptation to buy cheaper Air Independent Propulsion subs is certainly there.

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