trenchant

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TRAINING: HMS Trenchant moored off Skye, top, a crew member looks through the periscope, above, Commander Jon White on the conning tower, far right, and plotting the vessel's position, top right; SUB CRASH: The Record story
Nuclear-powered HMS Trenchant, which is twinned with Llanelli, has undergone a three-year refit to make it the most sophisticated ``hunter killer attack submarine'' in the British fleet.
Steam leaks grounded HMS Trenchant in 1998 and HMS Tireless last year.
The crew of nuclear submarine HMS Trenchant believed they were 7000 yards away from the fishing boat when they were, in fact, just 700 yards away.