Rudder Check for Aircraft Carrier

This is a discussion on Rudder Check for Aircraft Carrier within the Off Topic & Humor Discussion forums, part of the The Back Porch category; Originally Posted by HotGuns Hey fellow carrier sailors... I have noticed in virtually every picture of modern aircraft carriers, from about 70 on up, that ...

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Thread: Rudder Check for Aircraft Carrier

  1. #31
    VIP Member Array Kerbouchard's Avatar
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    Quote Originally Posted by HotGuns View Post
    Hey fellow carrier sailors...

    I have noticed in virtually every picture of modern aircraft carriers, from about 70 on up, that when they are doing over 30 knots they dont seem to have near the wake that the older carriers do.

    I've been on the Nimitz,the Ike, the Big E,the Connie, Kitty Hawk and the Ranger when they were somewhere in the Indian Ocean, the Red Sea,the Persian Gulf or the Gulf of Oman and in other spots where they had to get there quick for various reasons.

    I remember standing on the Nimitz on the flight deck watching the wake almost as high as the flight deck...I think we were doing around 50+ knots.

    Have they altered their props or rudders or what? I hear that they are a heck of lot quieter too. I know the bubble heads used to tell me that they could hear them over the horizon long before they could see them.

    Anyone ?
    Blade pitch has changed over the years, and the Enterprise could pull 50 knots, but it tore the ship apart and led to structural instability(it also had 4 times the Nuclear Reactors that Nimitz Class Carriers have). I believe they changed that shortly after the Nimitz was commissioned.

    Since then the blade pitch has changed to make it more conservative, I don't believe the Nimitz has ever reached 40 knots. I am sure that with the more extreme blades we could have reached 40-50 knots, but even at sub-40 knot range, we still had to do circles to wait for the rest of the battle group to catch up, and also, not to violate the treaties we have enacted about a warship transversing the ocean.

    YMMV, but the Nimitz got across the PA pretty quickly in '03 and '05, but I assure you, we never broke 40 knots.
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  3. #32
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    not to violate the treaties we have enacted about a warship transversing the ocean.
    What in the heck are you talking about?
    I would rather stand against the cannons of the wicked than against the prayers of the righteous.


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  4. #33
    VIP Member Array Kerbouchard's Avatar
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    Quote Originally Posted by HotGuns View Post
    What in the heck are you talking about?
    Haven't looked this up, and probably won't tonight, but will look into it. I had never given it any thought. The OOD and EOOW always said we couldn't travel more than a certain distance through international waters without it being treated as an act of war and we certainly did start doing circles after we reached a defined distance.

    They were officers, I was a lowly E-6, so I believed them. It's not like I was driving the ship or cared where we were going. All I had to do was make sure the power stayed on and the reactors stayed up.

    They weren't people who I would consider unreliable, so I believe I will be able to provide a source. If I am mistaken I will admit it and probably have more questions than I have answers. But I know for a fact that we would not exceed a certain mileage per day. I also know that the Nimitz cannot reach 40 knots with our current screws.

    I suppose it could have been due to tactical reasons as far as leaving the rest of the battle group behind, but they seemed like they knew what they were talking about, so I never questioned them.

    I'll look it up tonight or tomorrow morning, and try to post back here with more detail.

    As far as your question, with elevated Reactor Coolant Temperatures at the top of the band, the Nimitz could never reach 40 knots. The difference between AIII125 and AIII172 was tremendous. Not in terms of speed, but in terms of Reactor Power.

    With the props and the equipment we had on board, 40+ knots was not even close to realistic.
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  5. #34
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    The OOD and EOOW always said we couldn't travel more than a certain distance through international waters without it being treated as an act of war
    Anything is possible these days.

    I certainly hope that you are wrong though.

    I dont think that was the case back when I was in.
    I would rather stand against the cannons of the wicked than against the prayers of the righteous.


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  6. #35
    Distinguished Member Array kazzaerexys's Avatar
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    Quote Originally Posted by Kerbouchard View Post
    The OOD and EOOW always said we couldn't travel more than a certain distance through international waters without it being treated as an act of war and we certainly did start doing circles after we reached a defined distance.
    Just a guess here, but since the top speed of all of our carriers is still classified, I am thinking this is just plain old OPSEC. If the Russian maritime satellites can simply look down and see a CVN at point A at time T and then at point B at time S, well, you can figure out how fast it went. Since satellite orbits are utterly predictable and you know what their observation windows are, the admiral knows exactly what his unobservable sprint windows are...and then you can do laps until the next bird comes over the horizon.

    Why a carrier would sprint ahead of its escorts, though, is utterly beyond me---ASW is a team sport.
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  7. #36
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    One more reason I joined the Army, this isn't as dramatic in a truck.
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  8. #37
    VIP Member Array Kerbouchard's Avatar
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    That could be it. I can't find any treaty that limits maritime speed. I found old treaties that limited displacement, but not propulsion.

    It might have been a limit on EFPH, but I'm not sure. Oh, well. Like I said, I've been wrong before.
    There are two sides to every issue: one side is right and the other is wrong, but the middle is always evil.

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  9. #38
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    I am thinking this is just plain old OPSEC.
    That could very well be it. I have been on a few birdfarms though that were really moving the water though...but its been a long time.

    Oh, well. Like I said, I've been wrong before
    No big deal.

    Even I have been known to be wrong...Once, maybe twice at the most...


    I would rather stand against the cannons of the wicked than against the prayers of the righteous.


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  10. #39
    Senior Member Array InspectorGadget's Avatar
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    Quote Originally Posted by TN_Mike View Post
    Never stationed on a CV or CVN but I was on a BB. Next best thing.

    USS Wisconsin BB-64 Plankowner.

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    Loved my time in the Navy and I still miss it to this day.
    Next best thing please, I was on a Bird Farm. I would have killed for a billet on any one of the Battle Ships. I would love to see them drop in a Nuke Plant, some VLS cells, and bring them back.

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  11. #40
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    Quote Originally Posted by SatCong View Post
    Just a hard-starboard turn.
    I said port when I should have starboard.
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