Although the two navies are unlikely ever to find themselves fighting each other, submarine experts say that if they did, Australia’s Collins-class submarines would be likely to send the Kilos to the bottom of the ocean.
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I guess the dive problems on the Collins have been fixed ??
They have a done a pretty extensive upgrade for the whole class-don’t know if any problems exist still-
http://www.minister.defence.gov.au/1999/collins.html