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    actaeon277

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    Ok.
    Here's the answer for what is the pressure on a hull 3-400 foot down.

    CalcTool: Pressure at depth calculator

    300 foot down = 148 PSI
    400 foot down = 192 PSI

    But, remember, Navy submarine classifies it's submarines as rated to 400 feet.
    And, remember, Navy submarines were hitting 400 foot at the end of WWII.
    Look at technology, esp metallurgy. And then wonder if we're still at 400 foot.


    This is what happens when an underwater volcano throws up an underwater mountain, and a submarine barrels into it, not knowing the mountain is there.
    03_ssn_711_damage.jpg
     

    actaeon277

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    U.S.S. San Francisco returns, Navy releases late sailor's identity​

    January 10, 2005
    Story by Ken Wetmore

    The U.S.S. San Francisco is back home after a deadly crash at sea. The nuclear submarine ran aground Saturday afternoon about 350 miles to the south of Guam. The San Francisco limped into Apra Harbor under her own power at about 3 this afternoon.

    While the damage from Saturday's grounding is not immediately evident, there did appear to be a forward list as she sailed past the breakwater. The true damages though are the ones that you couldn't see.

    Below decks 23 sailors have injuries ranging from broken bones to lacerations to whiplash, and a number of the rest of the crew have scrapes and bruises. And most tragically, 24-year-old Machinist Mate 2nd Class Joseph Allen Ashley lost his life.

    Pacific Submarine Support Force spokesperson Lt. Commander Jeff Davis says the petty officer, whose hometown is listed as Akron, Ohio, was standing watch in an engineering compartment when the accident happened and sustained significant trauma to the head, resulting in his death on Sunday. The Navy spokesperson says the accident has impacted the submarine community.

    "This is felt in submarines all over the world, and not just our Navy but a lot of the foreign navy's we work with are grieving over; it was a terrible tragedy and it was a terrible accident and we're going to do everything we can to make sure it never happens again," he told KUAM News.

    While Machinist Mate 2nd Class Ashley has no relatives on Guam, a number of the other crew members do and their families lined the Sierra Dock at Apra Harbor to see their loved ones arrive. Lt. Commander Davis says the families have been kept up to speed with how their loved ones are doing and says the Navy will not just tend those who were physically injured. Said Lt. Commander Davis, "Anytime you have a tragedy of this nature aboard a submarine we want to do everything we can to take care of our family, our Navy family aboard and we have chaplains, we have people who are trained counselors who will be taken aboard and be given a chance to meet with the crew and help them through this grieving process."

    Details on how the accident occurred are still sketchy. While Commander Davis says the accident occurred about 350 miles south of Guam in the Caroline Ridge, he would not release the speed the submarine was traveling at, or its depth. And Commander Davis wouldn't speculate on how an accident like this could happen. He was emphatic however, when speaking of what the sub hit.

    When asked if there was any indication that it might have been another submarine or another vessel, Commander Davis said, "No...there's absolutely no reason to believe that it was anything other than a geographical feature under water."

    This afternoon Lt. Commander Davis said the Navy plans to conduct a thorough investigation so that "a tragedy like this never happens again." The Caroline Ridge is east of Palau and Yap, intersecting the Yap Trench from the east, and consisting of a chain of seamounts.


    Imagine being in your car and hitting a brick wall, no seatbelt.
     

    Crbn79

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    Indianapolis, North
    U.S.S. San Francisco returns, Navy releases late sailor's identity​
    January 10, 2005
    Story by Ken Wetmore

    The U.S.S. San Francisco is back home after a deadly crash at sea. The nuclear submarine ran aground Saturday afternoon about 350 miles to the south of Guam. The San Francisco limped into Apra Harbor under her own power at about 3 this afternoon.

    While the damage from Saturday's grounding is not immediately evident, there did appear to be a forward list as she sailed past the breakwater. The true damages though are the ones that you couldn't see.

    Below decks 23 sailors have injuries ranging from broken bones to lacerations to whiplash, and a number of the rest of the crew have scrapes and bruises. And most tragically, 24-year-old Machinist Mate 2nd Class Joseph Allen Ashley lost his life.

    Pacific Submarine Support Force spokesperson Lt. Commander Jeff Davis says the petty officer, whose hometown is listed as Akron, Ohio, was standing watch in an engineering compartment when the accident happened and sustained significant trauma to the head, resulting in his death on Sunday. The Navy spokesperson says the accident has impacted the submarine community.

    "This is felt in submarines all over the world, and not just our Navy but a lot of the foreign navy's we work with are grieving over; it was a terrible tragedy and it was a terrible accident and we're going to do everything we can to make sure it never happens again," he told KUAM News.

    While Machinist Mate 2nd Class Ashley has no relatives on Guam, a number of the other crew members do and their families lined the Sierra Dock at Apra Harbor to see their loved ones arrive. Lt. Commander Davis says the families have been kept up to speed with how their loved ones are doing and says the Navy will not just tend those who were physically injured. Said Lt. Commander Davis, "Anytime you have a tragedy of this nature aboard a submarine we want to do everything we can to take care of our family, our Navy family aboard and we have chaplains, we have people who are trained counselors who will be taken aboard and be given a chance to meet with the crew and help them through this grieving process."

    Details on how the accident occurred are still sketchy. While Commander Davis says the accident occurred about 350 miles south of Guam in the Caroline Ridge, he would not release the speed the submarine was traveling at, or its depth. And Commander Davis wouldn't speculate on how an accident like this could happen. He was emphatic however, when speaking of what the sub hit.

    When asked if there was any indication that it might have been another submarine or another vessel, Commander Davis said, "No...there's absolutely no reason to believe that it was anything other than a geographical feature under water."

    This afternoon Lt. Commander Davis said the Navy plans to conduct a thorough investigation so that "a tragedy like this never happens again." The Caroline Ridge is east of Palau and Yap, intersecting the Yap Trench from the east, and consisting of a chain of seamounts.


    Imagine being in your car and hitting a brick wall, no seatbelt.

    Sucks...... *sigh*
     

    Crbn79

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    Back when I was a kid, I was signed up for nuclear engineering in the Navy. Most of the nuclear assignments were subs. Rolled my ankle really bad playing basketball the week before ship date, tore a ligament. 6 months later, I was healed up, new ship date was 1 year out. Army gave me ship date in 1 week, so in the Army I went.
     
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