Sweden's Super Stealth Submarines Are So Lethal They 'Sank' a U.S. Aircraft Carrier

[rangerrebew]

Sweden's Super Stealth Submarines Are So Lethal They 'Sank' a U.S. Aircraft Carrier
Sebastien Roblin

November 11, 2016
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In 2005, USS Ronald Reagan, a newly constructed $6.2 billion dollar aircraft carrier, sank after being hit by multiple torpedoes.

Fortunately, this did not occur in actual combat, but was simulated as part of a war game pitting a carrier task force including numerous antisubmarine escorts against HSMS Gotland, a small Swedish diesel-powered submarine displacing 1,600 tons. Yet despite making multiple attacks runs on the Reagan, the Gotland was never detected.

This outcome was replicated time and time again over two years of war games, with opposing destroyers and nuclear attack submarines succumbing to the stealthy Swedish sub. Naval analyst Norman Polmar said the Gotland “ran rings” around the American carrier task force. Another source claimed U.S. antisubmarine specialists were “demoralized” by the experience.

http://nationalinterest.org/blog/the-buzz/swedens-super-stealth-submarines-are-so-lethal-they-sank-us-18383

[Smokin Joe]

Two realities:

A Diesel electric boat can be quieter than an nuke boat because it has no cooling pumps for a reactor that have to run full time.
 
A D/E boat (keep in mind they're getting better) can't stay submerged anywhere near as long as a nuke sub.