Willing to "cut your Brit Naval lads" some slack, especially on receiving simultaneous news that a young Lance Sergeant was lost during Afghanistan operations while on foot patrol. Tough jobs, but necessary. Has the SAS resolved proper arming and shielding of their HumVee vehicles, yet?

accidents happen all the time at sea especially with submarines,it shows that technology needs to be constantly monitored but then there is the human element it is operated by personnel,who can miss things due to boredom and constant training,however so far thewre have not been serious accidents,like some navies?

Nottingham is a destroyer not a submarine!! the SAS are a uk based force, not usually seen in US hum vees.....

Modern submarines operate in a passive sonar environment, forever listening to sounds in the water and filtering out ambient noise in order to classify sonar contacts. Uncharted rock pinnacles, are, by their very nature, almost impossible to locate, even by surface ships. For a submarine, running fast and deep, without the luxury of active sonar, a sub-surface uncharted rock pinnacle may be impossible to detect. Better, more detailed hydrographic surveys are the solution. Accidents do happen!