Last Updated: Friday, January 11, 2013, 17:49
An attack submarine of the US Navy has collided with a small, civilian vessel in the Persian Gulf, damaging one of the sub`s periscopes but not harming anyone on either vessel, media reports said.
Last Updated: Monday, August 22, 2011, 15:25
The indigenous periscope is the longest in the world and would be used in Prototype Fast Breeder Reactor.
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