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Virtual Earth Exposes Nuclear Sub's Secret

Posted by kdawson on Sun Sep 02, 2007 04:27 PM
from the tarp-would-have-helped dept.
NewsCloud alerts us to a story a few months old that has been getting a lot of play recently. A Seattle blogger, Dan Twohig, was browsing in Microsoft's Virtual Earth when he accidentally came across a photo of a nuclear sub in dry-dock. Its propeller is clearly visible — this was a major no-no on the part of someone at the Bangor Sub Base. The designs of such stealth propellers have been secret for decades. Twohig blogged about the find and linked to the Virtual Earth photo on July 2. The debate about security vs. Net-accessible aerial photography has been building ever since. The story was picked up on military.china.com on Aug. 17 — poetic justice for the Chinese sub photo that had embarrassed them a month before. On Aug. 20 the Navy Times published the article that most mainstream media have picked up in their more recent coverage. Twohig's blog is the best source to follow the ongoing debate. No one has asked Microsoft, Google, or anyone else to blur the photo in question. Kind of late now.

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[+] Google Maps Shows Chinese Nuclear Sub Prototype 339 comments
mytrip writes "An image of what could be one of China's new nuclear ballistic missile submarines is available on the Google Maps and Google Earth satellite-image site, a defense blogger claimed Tuesday. The satellite picture was discovered by Hans Kristensen, director of the Nuclear Information Project for the Federation of American Scientists, and announced Tuesday on his blog. Kristensen believes the picture, taken by the Quickbird satellite late last year, reveals China's new Jin-class, or Type 094, nuclear ballistic missile sub. The new sub class is approximately 35 feet longer than its predecessor, the Xia-class, also known as Type 092, according to two images Kristensen compares on the blog. The Jin-class sub has an extended midsection that houses 12 missile tubes and part of the reactor compartment, Kristensen explains."
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  • Google Cache (Score:5, Informative)

    by tajmorton (806296) on Sunday September 02, @04:36PM (#20445493)
    (http://www.wildgardenseed.com/Taj/blog)
    Google Cache [72.14.253.104]
    • Re:Google Cache (Score:5, Funny)

      by Anonymous Coward on Sunday September 02, @05:00PM (#20445685)
      Your proliferation of this information, shameless and most likely premeditated, cannot but argue for an immediate and thorough dismantling of this abomination that is the Internet.

      Clearly, the citizenry's desire to be on equal terms with its rightfully appointed overseers is misguided.

      What could compare to the danger of such leaks? Only, perhaps, ability of the governed to guide the acts of the governors. (But, thank God and all that is holy, we need not contend with such a possibility.)

      The proper solution to this satellite photo disaster is to establish government and international bodies, whose responsibility will be to oversee the propagation of information in its early stages. Press organizations, and other legitimately licensed speaking entities, could submit all reports and articles for government approval before publication, and thus dangerous knowledge would be stopped in its tracks. All information emanating from government bodies would be confidential by default, enforced by penalties befitting treason.

      It is indeed a distant dream -- such a beautiful system of bureaucratic power and unquestionable hierarchy -- yet we must do what we can to stop out-of-control communication amongst the proletariat from further endangering the established, and righteous, distribution of power.
      [ Parent ]
    • 1 reply beneath your current threshold.
  • Slashdot (Score:2)

    by JamesRose (1062530) on Sunday September 02, @04:36PM (#20445495)
    Generally Posts news about 3-4 days after it has come to light, yet the picture of the propeller is still there, therefore i think we can assume the US no longer cares (because its too late, or they dont mind people knowing) about the picture
    • Re:Slashdot (Score:5, Interesting)

      by jmauro (32523) on Sunday September 02, @05:06PM (#20445741)
      (http://jmauro.freeshell.org/)
      Or it's a fake plant to hide the real propeller design.
      [ Parent ]
      • Re:Slashdot by MillionthMonkey (Score:3) Sunday September 02, @05:46PM
      • Re:Slashdot by NeverVotedBush (Score:3) Sunday September 02, @07:58PM
      • Re:Slashdot by dbIII (Score:3) Sunday September 02, @10:54PM
        • Re:Slashdot by Dun Malg (Score:2) Monday September 03, @12:56AM
          • Arg! by Gazzonyx (Score:2) Sunday September 09, @10:59PM
      • They fucked up. (Score:4, Insightful)

        by andreyw (798182) on Monday September 03, @01:43AM (#20449093)
        (http://andreywarkentin.livejournal.com/)
        I'll put in my two cents here, so they don't get lost in the copious amounts of typical /. noise.

        The issue here isn't that "Google or Live didn't blur it out". It's that the base people didn't care much for the eyes in the skies. I'm sure the Chinese (or Martians) have seen the secrets.
        [ Parent ]
    • It's older than that... (Score:4, Insightful)

      by JacksBrokenCode (921041) on Sunday September 02, @05:20PM (#20445851)
      The MonsterMaritime.com entry linked to in the writeup was actually posted on July 2, a full 2 months ago. 2 months later and they haven't tried to put the horse back in the barn so while it's technically a secret, it's probably not that important of a secret. Besides, even if they asked MS to blur the image on Live they'd still have to ask other companies with access to the data to blur it, and then they'd have to go to the source of the imagery and ask them to stop selling it (which they may not have a case for).

      In reality, if they censored the images the only people who wouldn't be able to see it are people not willing to spend money to see images of a classified submarine. Any country/organization with it's own program for developing nuclear submarines or technology to detect submarines likely has the financial/organizational resources to aquire this imagery without depending on a free website.
      [ Parent ]
    • "Rats...that damn stupid tarp's gonna get me court martialed... ...I had to run to take a leak. Two minutes...thas' all! Who knew the satellite was overhead?" --signed, Boatswain's Mate I. M. Waterhead
      [ Parent ]
    • Pay attention to the missiles, not the propeller by Simonetta (Score:3) Monday September 03, @02:13AM
      • Re:Pay attention to the missiles, not the propelle by rtb61 (Score:3) Monday September 03, @05:01AM
      • by RegularFry (137639) on Monday September 03, @09:06AM (#20451459)

        Allow me to create a word. omnicide: the act of the murder of every human being and all civilization.

        Google says you're not the first, but what the hell...

        These submarines exist for one reason: They exist to kill every human being on earth.

        That's almost precisely backwards. These submarines exist to ensure that never happens. They're part of the Mutually Assured Destruction balance. Neither side is going to launch a first strike unless it knows with absolute certainty that it's going to come out sufficiently ahead in the ensuing trade-off to survive as a viable state. Nuclear subs completely screw with any certainty you might think you've got in launching that attack, because it's damn near impossible to know that you'll be able to kill enough of the opposition's subs before they can launch. Stealthy propellers are a big part of that, helping to ensure that the enemy can't get and keep a lock on your position. These submarines aren't designed as first-strike weapons, but as an assured second-strike. To say that this technology cannot be used completely misses the point. In just existing, they are being used - as an insurance policy. If they were ever to launch, humanity would already be dead.
        [ Parent ]
      • Pay attention to the stupidity, not the propeller. by baboo_jackal (Score:1) Monday September 03, @10:16AM
      • Re:Pay attention to the missiles, not the propelle by Nihilanth (Score:2) Monday September 03, @03:11PM
      • Re:Pay attention to the missiles, not the propelle by bandmassa (Score:1) Monday September 03, @04:38PM
    • Re:Slashdot by SpinyManiac (Score:2) Monday September 03, @06:27AM
  • Probably not significant (Score:5, Insightful)

    by Ancient_Hacker (751168) on Sunday September 02, @04:37PM (#20445499)
    Waay too many assumptions in this article:

    • Our propellers are more advanced than the other guy's.
    • A 2-D snap from a satellite is going to reveal significant details.
    • The propeller is real and was revealed by "accident".
    • Re:Probably not significant by PSGInfinity (Score:1) Sunday September 02, @04:57PM
    • Re:Probably not significant (Score:5, Insightful)

      by georgewilliamherbert (211790) on Sunday September 02, @05:10PM (#20445761)
      In reply...
      • Our propellers are more advanced than the other guy's.

        They are.

        • A 2-D snap from a satellite is going to reveal significant details.

          It did.

          • The propeller is real and was revealed by "accident".

            It almost certainly is real; it's too similar to other known quiet props, with some interesting variations that the 2-D satellite image did in fact usefully reveal (blade advance angle), from the sun angle and shadows.

            Those in fact tell a professional in the field something useful about the operating capabilities of the sub, in terms of its relative optimization for different types of operations.
      [ Parent ]
      • Re:Probably not significant (Score:5, Insightful)

        by tftp (111690) on Sunday September 02, @06:02PM (#20446187)
        (http://www.lib.ru/)
        It almost certainly is real

        I tend to agree just because otherwise it would presume a really complicated hoax with a low chance of success (such as fooling a foreign government.) You'd have to replace the propeller, then make Microsoft or whoever takes pictures to take them, then you'd have to activate your agent to post the photos on a blog, and even then you'd still not know if the photo fooled anyone or not, since your adversary wouldn't be a complete idiot, so the fake must be realistic and mostly working.

        With regard to the photo, what you have there is effectively one blade photographed from seven different angles. This allows the "other side" (whatever that is) to combine them to get a higher resolution.

        But the main issue here is there are not too many countries in the world that would even care about such things. NATO countries probably don't need this photo, they have the real stuff. Russia is rumored to have procured such propeller designs about 25 years ago, and likely has enough computing power to improve on them as needed. China probably has many agents everywhere as well, you can't possibly keep such large things secret for long. What other countries then would want to know how to design a silent propeller, considering that even milling machines required to build the blades are not sold over the counter to anyone who asks, and they are not cheap either, and you have to have a solid manufacturing base to even produce the metal for the blades. So it's an expensive, high-tech business that only a handful of countries have the need and the money to get into. Not all major countries build submarines, many prefer to buy.

        [ Parent ]
      • Re:Probably not significant by twiddlingbits (Score:2) Sunday September 02, @06:09PM
      • Re:Probably not significant by Ash Vince (Score:2) Sunday September 02, @06:22PM
      • Re:Probably not significant by digitalchinky (Score:2) Sunday September 02, @08:01PM
      • Re:Probably not significant by localman (Score:1) Sunday September 02, @09:16PM
        • Re:Probably not significant (Score:5, Informative)

          by georgewilliamherbert (211790) on Sunday September 02, @11:25PM (#20448331)
          I know Derek (from online, for years, but not in real life), and he's been there and done that.

          The general shape is not news; it's the same general shape as on a bunch of US attack sub prop pictures which have been public for 10+ years.

          The photo reveals the blade advance ratio for that particular prop design, though, which is useful to adversaries, and is different than the attack sub props.

          As far as I know, and I have a naval architecture degree and have followed sub and naval ship design reasonably well for 30+ years, enough details to determine blade advance ratio on Ohio SSBN props have never been public. It was widely known that they were skew / scythe props. But "It's of that general type" and "Oh, look, that's what speed it's designed for" are two different things. A smart hydrodynamicist or naval architect can use that and tell roughly how fast an Ohio can reasonably be expected to go at top end speed, and things about how much cavitation noise it will make accellerating in a sprint. Also, it can help map propellor RPM to speed.

          It's important, and the blade advance angle there is very different than the previously widely known ones on attack sub props, and that will tell bad guys something.
          [ Parent ]
      • Re:Probably not significant by durin (Score:1) Monday September 03, @01:06AM
      • Re:Probably not significant by Yvanhoe (Score:2) Monday September 03, @02:04AM
      • Re:Probably not significant by malsdavis (Score:2) Monday September 03, @08:26AM
      • 1 reply beneath your current threshold.
    • Re:Probably not significant by BalanceOfJudgement (Score:2) Sunday September 02, @11:02PM
      • 1 reply beneath your current threshold.
    • Re:Probably not significant by romanm (Score:1) Monday September 03, @08:50AM
    • Re:Probably not significant by solitas (Score:2) Monday September 03, @11:21AM
    • Re:Probably not significant by Lisandro (Score:3) Sunday September 02, @04:46PM
    • Re:Probably not significant by hamburger lady (Score:3) Sunday September 02, @04:52PM
    • Re:Probably not significant (Score:5, Informative)

      by TerranFury (726743) on Sunday September 02, @04:53PM (#20445615)

      Why three?

      I am not a fluid dynamicist. But: To increase thrust at a certain RPM, it seems that you can either (1) increase the diameter of the propeller, or (2) increase the number of blades. The problem with increasing the diameter is that the velocity at the tips increases, which leads to effects like cavitation (which, besides being very noisy, damages propellers). So what you do is increase the number of blades.

      Prop-driven airplanes produced near the end of WWII had many-blade propellers for this reason as well: They wanted a lot of thrust, but, if they made the blades any longer, then the tips would have been supersonic. (I think I got this factoid from the History Channel.)

      My guess is that a quiet high-thrust propeller would spin slowly and have many, very wide and heavily-curved blades. Let's see if somebody who knows more agrees.

      [ Parent ]
    • Re:Probably not significant by Kpt Kill (Score:1) Sunday September 02, @05:11PM
    • Re:Probably not significant (Score:5, Insightful)

      by whoever57 (658626) on Sunday September 02, @05:15PM (#20445811)
      (Last Journal: Thursday September 30 2004, @01:33AM)

      Isn't seven blades on a propeller a bit overdone? I think three or four should be the most efficient.
      Efficiency isn't the only design criterion, stealth is an important design objective for a sub.
      [ Parent ]
    • Re:Probably not significant (Score:5, Informative)

      by mikael (484) on Sunday September 02, @05:23PM (#20445877)
      The secret bit of these propellors is what materials they are made of, how precisely they curve, and to what tolerance they are engineered. The big problem with propellors is that they tend to suffer from cavitation [wikipedia.org] at high speed, where the sudden change in pressure causes bubbles to form and collapse. Apart from being rather noisy, referred to as "singing" (which is a bad thing for a stealthy submarine trying to make a fast getaway) it also causees damage to the blades (much like desert sand on engine turbine blades).

      The purpose of having an odd number of blades is no secret - it is to reduce vibration. As the submarine travels through the water it leaves a wake behind it. Above the submarine there is less water pressure than below - so having two blades above and below at the same time is a bad thing. The more blades, the less vibration, but propellors are more efficient with fewer blades. You will see speedboat propellors with three or four blades, and fishing boats can have propellors with only two blades.

      There is also the problem that having different metals in close proximity in a salt water environment, can lead to an electrolysis effect where the metals and water act as a kind of battery. Lots of technical papers on Propellor design [hydrocompinc.com]

      "The most frequent cure for a singing propeller is the popular "anti-singing edge". This is a chamfer applied to the trailing-edge to promote separation of the vortices."
      [ Parent ]
    • Re:Probably not significant by jcr (Score:2) Sunday September 02, @06:53PM
    • Re:Probably not significant by slashbob22 (Score:3) Sunday September 02, @08:10PM
    • Re:Probably not significant by NeilTheStupidHead (Score:1) Sunday September 02, @10:36PM
    • Re:Probably not significant by Stooshie (Score:2) Monday September 03, @04:26AM
    • i'm not a specialist but by datadigger (Score:1) Tuesday September 04, @07:32PM
    • 4 replies beneath your current threshold.
  • Interesting for average joe, but... (Score:4, Insightful)

    by raftpeople (844215) on Sunday September 02, @04:39PM (#20445521)
    isn't it safe to assume that all countries with satellites in orbit have been watching each others military facilities for decades?
  • From TFA: (Score:5, Informative)

    by dominious (1077089) on Sunday September 02, @04:42PM (#20445545)

    You may have to be in Internet Explorer to see this...
    Firefox shows just fine! just so to let you people of /. know:)
  • Is it really so secret? (Score:5, Informative)

    by spyfrog (552673) on Sunday September 02, @04:43PM (#20445557)
    (http://slashdot.org/)
    Is this really so secret nowdays?

    I think I remeber that the thechnology to make these kind of silent propellers where sold by a norweigan company to a KGB front in the early 1980:s. As I recall, it was a major scandal when the news brooke.
    As I have understod it, most soviet nuclear subs had these improved propellers since late 80's and that most of the eastern block started to get access to the same technology.

    Most western submarines has had these kind of silent props for years and I belive that most submarine nowdays have one.
    You could try to track the Swedish HMS Gotland with passive hydrophone and see how far that takes you, for instance... she insn't even a NATO sub but she is more silent than even the american SSN subs.
  • by GISGEOLOGYGEEK (708023) on Sunday September 02, @04:53PM (#20445613)
    The US is not just concerned about others trying to copy the propeller to reduce the noice made by their subs.

    The submarine will still make some noise. They would be concerned because knowing the propeller design gives you an idea of what type of noise it will make in use ... the sonar signature.

    The signature can be used to identify classes of submarines and potentially individual subs.

    So rather than other countries copying it ... the problem is that other countries may now have a good idea what that particular sub will sound like, and may know when the US is illegally sneaking in and out of other countries waters etc with this sub, or if this sub is positioned just outside their waters with all it's nuclear WMD's ready to go.

    On the other hand, maybe the US doesnt care at all ... maybe this was an old propeller design being replaced and retired.
  • Face it.... (Score:3, Interesting)

    by 8127972 (73495) on Sunday September 02, @04:53PM (#20445621)
    ... In the age of Google Earth, Virtual Earth, etc. (not to mention Google), there are no secrets. Welcome to the new world.
    • Re:Face it.... by WombatDeath (Score:2) Sunday September 02, @05:20PM
    • Re:Face it.... (Score:5, Funny)

      by pclminion (145572) on Sunday September 02, @08:40PM (#20447313)

      ... In the age of Google Earth, Virtual Earth, etc. (not to mention Google), there are no secrets. Welcome to the new world.

      Okay... So what's sitting on the topmost shelf of the rightmost cabinet on the east side of the wall of my garage?

      [ Parent ]
    • Re:Face it.... by blahplusplus (Score:2) Monday September 03, @03:52AM
    • 1 reply beneath your current threshold.
  • Then its not that much of a 'leak' and i bet its rather old ( ie, known ) technology.

  • Link to base since the blog is hosed (Score:5, Informative)

    by SuperBanana (662181) on Sunday September 02, @04:57PM (#20445657)
    Since the guy is over quota: http://maps.google.com/maps?f=q&hl=en&geocode=&q=4 7.7276611328+N,+122.7155085586+W&ie=UTF8&ll=47.721 427,-122.718315&spn=0.070444,0.139046&t=k&z=13&iwl oc=addr&om=1 [google.com]

    Coordinates are +47 43' 39.58", -122 42' 55.83" for the base (this can be plugged into Google Earth.)

    The location of the snapshot is of the dry-dock at 4744'36.08"N, 12243'48.51"W.

    This link may or may not work: http://maps.live.com/default.aspx?v=2&cp=ryqjnb4s5 7d5&style=o&lvl=2&tilt=-90&dir=0&alt=-1000&scene=1 0352732&encType=1 [live.com]

    There's no propeller visible in the Google Earth imagery. All you can see is that there's what might be a sub; it's quite blurry. The Windows Live imagery shows a blurry whirly instrument of death; looks like a bunch of boomerangs.

    Honestly, it's stupid. Half the shit that's classified, is just classified to impress. For example, the top speed of various US air craft carriers. Like that can't be figured out by a foreign government...? Like our *propeller technology* is that much more advanced, and other nation's subs haven't figured out what it sounds like? C'mon.

    • by BCW2 (168187) on Sunday September 02, @05:40PM (#20446019)
      (Last Journal: Monday September 25 2006, @07:02PM)
      Think again! 99.9% of the Navies of the world don't have sonar good enough to even get a sniff of one of our boats. The best the Soviets ever had was 2 generations behind! There is supposed to be a canopy over the the screw before the dock is pumped out. If you ever go to Groton for a launch you might notice that the boats are launched without a screw, it is installed later alongside the pier. Of course there are 2 different screws for each class of boats. A speed screw is used on the first few to generate top performance numbers then removed. A silent screw goes on all operational boats. The difference? Shape, pitch, and number of blades.
      I rode a Fast Attack in the Cold War, so I might know more than someone who hasn't been there.
      [ Parent ]
    • Re:Link to base since the blog is hosed by Nimey (Score:2) Sunday September 02, @06:33PM
  • by Claws Of Doom (721684) on Sunday September 02, @05:07PM (#20445747)
    I found a Google Cache [64.233.183.104] copy working well enough...
  • krull (Score:1, Funny)

    by Anonymous Coward on Sunday September 02, @05:34PM (#20445971)
    so basically the top secret propeller design is based on the blade from "krull".
  • movies (Score:3, Interesting)

    by Loconut1389 (455297) on Sunday September 02, @05:43PM (#20446039)
    (http://webtrotter.com/blog)
    I swear to ghu that I saw a propeller like that in some sub movie- though it fails to render a name in my mind. I remember seeing a prop just like that on a cg shot of the sub driving away/up - perhaps in a torpedo sequence?

    Anyway, I could be wrong, but I think I've seen one before.
  • Better than the leaked Keyhole satellite shots of the first Soviet Carrier.

    The image is of a Ballistic Missile or "boomer" submarine, OHIO class. There are two sets of screws or propellers that they can put on them, a speed screw and a patrol screw. Obviously, the screws are named for their performance level and how quiet they are at a given speed.

    The US Navy spent untold hundreds of millions in hydrodynamics and propeller research, so they don't want to make it easy for the opposition to get their grubby paws on one of the most efficient screw designs in the world.

    Frankly, I would not be surprised if the NSA or the USN would step in and order the images pulled. It aint like it was taken up close and personal, with dimensional references.
  • Closeup of the propeller (Score:2, Informative)

    by newscloud (1037538) * on Sunday September 02, @06:01PM (#20446185)
    (http://www.newscloud.com/)
    K changed my original post but I put a close up of the liveearth propeller image here [idealog.us]. I agree the U.S. govt doesn't care about it at this point or MSFT would have blurred it.
  • Misdirection? (Score:3, Interesting)

    by TallGuyRacer (920071) on Sunday September 02, @06:49PM (#20446587)
    (http://www.tallguyracing.co.nz/)
    Perhaps the U.S. Navy put a fake propeller on the sub.

    U.S. Navy: "Hey you guys do the aerial photos for Google and Mircosoft, right?"
    Acme Aerial Photos: "Yip."
    U.S. Navy: "When are you guys next flying over our base?"
    Acme Aerial Photos: "Next Tuesday. Weather permitting."
    U.S. Navy: "Thank you. You have been very helpful. <evil laugh>"
  • It's been seen before... (Score:2, Insightful)

    by Anonymous Coward on Sunday September 02, @06:53PM (#20446625)
    I have a book (U.S. Submarines Since 1945, An Illustrated Design History, by Norman Friedman, 1994 Naval Institute Press) that shows an old publicly released official Seawolf model with a hooked propeller very similar to the one shown in that image. The same book also has a very good image of the scythe-bladed propeller of a Las Angeles class submarine, whos manufacturing techniques were at the root of the late Toshiba milling technology sale scandal) I'm thinking that the blogger who discovered this has made a few assumptions about the level of secrecy associated with the item in question as the propeller form, at least, has appeared in public before.
  • Behind the times (Score:5, Insightful)

    (Obligatory disclaimer but without the obligatory tortured acronym: Yes, I am a former submariner (and have been to the Delta Pier many times), and am a student of naval history and related security issues.)
     
    The props haven't been as jealously gaurded recently as in times past - in fact, I saw pictures openly published of them as early as the late 1990's. Though the less knowledgeable may drool over seeing them at all - the pictures on Virtual Earth are not particularly high res, nor particularly useful. The fact that the US uses scythe blade propellers has been openly acknowledged since the early 90's.
     
    Or, to put it even more simply, these pictures show nothing not already publically known and acknowledged.
     
    Ditto for the weapons magazines - there is nothing classified about the exteriors, existence, or location.
     
    This article is however a interesting point on the problem of getting your news from blogs; sometimes the author knows what he's talking about. Usually, when it comes to specialized topics, he doesn't.
  • by mikiN (75494) on Sunday September 02, @08:25PM (#20447229)
    ...of grownups playing hide'n'seek and thinking they're the best at it. Then when one gets caught out he throws a tantrum.
    My advise: Either learn to hide better, like build a (camouflaged) roof over the thing, swap the propeller for a fake while in dock, or better yet, don't hide at all.

    As for pictures, anyone can take a few homing pidgeons to a location where the target is in line with their roost, strap tiny cameras to their bellies and let them fly. No big deal, no high tech.

    War is overrated anyway, there are more urgent concerns, like how to save the planet and such.
    • 1 reply beneath your current threshold.
  • Setec Astronomy? (Score:5, Funny)

    by 3rd_Floo (443611) on Sunday September 02, @08:48PM (#20447359)
    (http://slashdot.org/)
    I wonder if Microsoft Visual Earth has been getting their data from Setec Astronomy??
  • not a satellite (Score:2)

    by LordSah (185088) * on Sunday September 02, @09:13PM (#20447521)
    FYI, the propeller image(s) was not taken from a satellite. The Bird's Eye View photography is shot from planes.
  • Weird (Score:1)

    by SystemR (787935) on Sunday September 02, @09:27PM (#20447609)
    Weird, the link to the submarine picture from the article, depending on the browser (I tested it with IE7 and Firefox) you used, went to a different location/picture/view. Firefox seems to be the one that gets it right.
    • Re:Weird by chis101 (Score:1) Monday September 03, @05:43PM
  • Are you serious?? (Score:1)

    by AnthonyPaulO (732084) on Sunday September 02, @09:47PM (#20447721)
    Wtf? Are you serious posting this nonsense?? Do you *really* expect people to think that, in this day and age with the latest in sattelite technology, the powers-that-be are going to service an instrument of war containing visible top-secret technology in *gasp* plain view for all to see?? I'm even more amazed that people don't stop and think for a second before posting additional comments speculating as to what all this may mean. Think people, use your damn brain... if it's out in the freaking open, it's not a secret, and in this particular case the technology in question hasn't been in ages. Friggin' lemmings...
  • Stick to Linux folks (Score:3, Informative)

    by rock603 (1074230) on Sunday September 02, @09:58PM (#20447791)
    I'm just amazed. Reading Slashdot is like speaking with your "know it all" good friend or relative. You like to discuss important topics with them, but at the end of the day, they're really only an expert at one or two things!

    Okay - so I'll comment as a ten year Navy veteran (with Sub time) and as an MS Virtual Earth employee.

    On the actual propeller, some of the comments above are accurate with respect to design, power, speed and cavitation issues. If it's covered by Wikipedia, then it must be true! There has always been a policy to cover the propeller whenever the boat was pulled out of the water - it's part of the secret sauce behind our submarine stealth. Not showing it in public only makes sense, but this picture from the air could have been taken by anyone flying a private plane. Shame on the Navy for not covering it, but then again, there's more to the engineering behind it than a picture could ever show.

    Talk of satellite imagery and Government intervention is an interesting topic of the day, however. For one thing, the image was not taken by satellite, but rather by airplane using a unique capability for oblique imagery. In Virtual Earth, you can view the same area at 2 zoom levels and 4 compass points. The imagery comes from Pictometry, and MS uses the term "Bird's Eye" to depict areas in which it is available. It's pretty incredible imagery, truly raising the quality bar over systems using only satellite imagery.

    Note that Microsoft does not manage satellite or aerial providers - we only take the imagery in, enhance it, tile it and then provide it to our customers in the form of an API. The organizations that provide the imagery have been in business for years capturing images of the earth and selling them to commercial and government organizations. If anyone should be on point to discuss the appropriate image capture time and location, these would be the organizations to do so. Since I do not work for one of these organizations, I will abstain from commenting on their data capture policies. Perhaps they have a Slashdot reader who would like to comment!

    So what is Microsoft's position on this issue? A quick search (http://search.live.com/results.aspx?q=justin+osme r+submarine+propeller [live.com]) yields the following statement on Navy Times from Justin Osmer of the MS Virtual Earth product team:

    "Our mapping products fully comply with U.S. laws governing the acquisition and publishing of aerial imagery," according to the statement. "The clarity of the images is impressive, but beyond a certain zoom level the images become 'pixilated' and blur. In addition some Virtual Earth imagery can only be viewed from certain distances.
    "Additionally, there are other instances where images have been intentionally blurred for security purposes. We review requests to do so on a case-by-case basis. In addition, we do not provide real-time data or live satellite images. All the imagery has been collected at a fixed point in time over a period of the last few years."

    At the end of the day, several commenters here and elsewhere have used the term "get used to it", referring to the fact that we're losing our privacy and anonymity every day via cameras in the sky and search engines on earth... Perhaps this is true, but then again, maybe it's exactly what we need at this point in our civilization.

  • another pic of the same technology... (Score:4, Informative)

    by ErnstKompressor (193799) on Sunday September 02, @10:22PM (#20447955)
    (http://www.thefloatingrock.com/)
    "Ducted propulsion" [globalsecurity.org] on a navy demonstrator vehicle...

    ...is this a secret?
    • 1 reply beneath your current threshold.
  • by MtViewGuy (197597) on Sunday September 02, @11:13PM (#20448257)
    ...I think the Russians figured out more or less the same propeller design about the same time the Americans did. People forget the Russians during the Soviet era had excellent scientists, and TsAGI (the Central Aerohydrodynamic Institute) did a lot of pioneering work in aerodynamics and hydrodynamics, including work on ship and submarine propeller design.

    By the way, that picture confirms what I saw several times on the History Channel, where they showed a Los Angeles class submarine underwater running with a multibladed propeller (you can see the propeller blades clearly in the video).
  • by 9gezegen (824655) on Sunday September 02, @11:53PM (#20448465)
    Recent German AIP submarines (U-212/214) have the similar 7-blade screwback propeller. It looks like the secret was out long before this picture was put into the internet.
  • by sageimac (1090741) on Monday September 03, @12:28AM (#20448639)
    Check out the Russian Hovercraft on Google Earth. Take a look at 54o 38' 07.00 N 19o 54' 41.00 E. It's huge - with slips for about a half-a-dozen more.
  • Confidential! (Score:1)

    by architimmy (727047) on Monday September 03, @12:59AM (#20448875)
    (http://www.architimmy.net/)
    So are all of us who show up in this guy's IP logs in danger of being "redacted" now? I probably shouldn't have clicked on that link (or posted this with out checking "post anon" for that matter).
  • We love the subs! (Score:2)

    by Conanymous Award (597667) on Monday September 03, @01:32AM (#20449041)
    "Its propeller is clearly visible -- this was a major no-no on the part of someone at the Bangor Sub Base. The designs of such stealth propellers have been secret for decades."

    Whaddya mean? Everyone of us knows what a nuclear (nukular) propeller looks like [washington.edu].
  • by JSchoeck (969798) on Monday September 03, @02:26AM (#20449305)
    Good morning citizens of the United States.

    It certainly is debatable if such photographs should not be classified. But ask yourself one thing:
    Do you really worry about other big industrial nations (Russia, China, NATO partners, etc.) copying US military equipment to use it against them? Did none of you other commenting people think about the fact that the Cold War ended over 15 years ago?

    The thread today is not a big nation - of course unless another two or three presidents like your current one come to power and continue this political course of self-isolation. But let's just hope for the good of mankind that this is not going to happen.

    I say classify military informations, fine, but also please get real and stop suspecting every other nation of wanting to attack you.

    Have a good day

  • by stuartkahler (569400) on Monday September 03, @02:38AM (#20449363)
    Something tells me that the rest of the world has already figured out that a quiet propeller would have more blades and a twisting shape to them. I think the exact shape of the propellers would be what they want. The photos would have to be detailed enough for a computer to generate a very exact topography from.

    The whole thing has a certain Cold War aspect to it. If they're so far behind in quiet propeller technology that a 20 pixel high image would help them, then they're never going to catch up with what our fluid dynamics researchers are testing for the next generation.
  • Disinformation ? (Score:1)

    by jean-guy69 (445459) on Monday September 03, @03:09AM (#20449523)
    Maybe the photography reveals the design of the top-secret propeller..
    Or maybe other countries are fed with false intelligence.
  • This is old technology, still classified by regulation but long recognized as having been "compromised" decades ago, most notably from an errant sale of surplus machine tools to the PRC in the 1980's. It's about as significant as having the code for an old AN/YUK-7 computer or LINK-4 NTDS...of more use as an interesting conversation piece than of any military or scientific value. Besides, there is no credible adversary for US submarines left anyway; the few ships/subs left to the Russians generally just rust away at their moorings, and the Chinese navy is a laughingstock. North Korea and Iran are just pests from a naval warfare standpoint, and we do not regard India as potentially hostile. So who really cares?
  • by Silver Surfer 1 (193024) on Monday September 03, @02:25PM (#20454817)
    Same propeller as the LA class sub.
    Picture from a dry dock in Scotland in the 70's

    http://www.americanhistory.si.edu/subs/anglesdangl es/images/friedman_prop_full.jpg [si.edu]
  • Re:The US Navy Is Not Such A Secret (Score:5, Insightful)

    by Gerhardius (446265) on Sunday September 02, @04:45PM (#20445573)
    Hmm, do you believe that having subs means needing a big surface fleet to protect them? The US has a big navy because they have a need to be everywhere at once. Some places the US likes to get involved lack any friendly air bases so they need carrier groups. China has no need to try to match the US Navy, just as the US has no need to match the size of the Chinese Army. Additionally, any intelligence of value on current US sub programs is already in Moscow and Beijing: history has shown how simple it is to buy information in a debt driven economy.
    [ Parent ]
  • Re:The US Navy Is Not Such A Secret (Score:4, Interesting)

    by enrevanche (953125) on Sunday September 02, @04:52PM (#20445605)
    A submarine does not need a carrier battle group. The point of a sub, is a stealthy platform for launching missiles or for sneaking up on other vessels undetected. A group of effective submarines could make a carrier battle group ineffective. In a war against a major enemy, carriers will probably be useless unless their air, submarine and missile forces can be neutralized. They primarily for show and wars of aggression against far weaker enemies.
    [ Parent ]
    • Re:The US Navy Is Not Such A Secret (Score:5, Interesting)

      by Jarjarthejedi (996957) <bookreader13 AT cox DOT net> on Sunday September 02, @06:42PM (#20446529)
      (Last Journal: Wednesday October 24, @11:51AM)
      "In a war against a major enemy, carriers will probably be useless..."

      And where did that factoid come from? One would imagine that a ship with the capability to strike at extremely long distances is always useful, if you can hit your enemy before their weapons can reach you you have an advantage. As for carriers being vulnerable to subs that's only partially true. Certain types of submarines, especially advanced nuclear subs (and diesel ones, so long as they don't surface anywhere near the carrier group and have enough battery power to get in and out) could conceivably slip through the defenses around a carrier and then it's aircraft would be useless. Given that the last major (that I know of) engagement between large groups of submarines and carriers was WWII, and that was clearly decided in favor of the carrier groups (53 u-boats sunk to less than 10 of the CVE mini-carriers) I'd say a generalization like 'Subs counter carriers' is kinda...wrong. A carrier battle group at war would typically have at least 1 radar plane (Orion?) on CAP. If the sub surfaces nearby radar has a chance of picking it up. In addition the carrier's escorts have darn good sonar and wouldn't be too hesitant to use it.

      So basically, 1 lone carrier vs sub is an easy win for the sub, unless the carrier sees it coming from a long way off and launches anti-sub efforts. 1 carrier battlegroup is at least a match for any similar number of warships, including subs, and very good at other tasks such as beach assault, long range support etc. A carrier battle group is currently the most versatile type of navy imaginable, as such it may not be the best way to counter all threats (a pair of destroyers working in tandem with some anti-sub helicopters would be cheaper and pretty effective against small numbers of subs). It's a Jack of All Trades, master of none type of thing, a Carrier group is good at anti-surface ship, anti-sub, and anti-land combat.

      Sneaking up on a ship which is fully prepared for war is a lot harder than some things would lead you to believe. Just because you're underwater and pretty quiet doesn't mean your undetectable, and if you're too quiet you can be detected that way (one possibly problem with modern US subs is that they're actually quieter than the surrounding ocean and could *conceivably* be detected that way). No amount of noise-reduction is going to save you if even 1 enemy ship is using active-sonar, you're going to be detected unless it's a cloak-and-dagger fight which is something aircraft carriers rarely engage in, they're more 'Hey look, I'm right here, I don't need to hide because I'm that much better than you' style fighting, and in that arena (when radars are at full and sonars are active) subs lose all stealth benefits, and an unstealthed sub vs a carrier group is just asking for trouble.

      So to sum it up, no, a carrier battle group is not useless. Subs are easily countered (unless you're trying to be stealthy as well) and missile blocking is what Aegis (common in CBG's) class destroyers were partially built for. Aircraft carriers are built for show, and are good against weaker enemies, but also against equals, it's against stronger enemies (few and far between at this moment) that they begin to look impossibly weak and fragile.
      [ Parent ]
    • Re:The US Navy Is Not Such A Secret by Dunbal (Score:3) Sunday September 02, @07:17PM
    • Re:The US Navy Is Not Such A Secret by Ironsides (Score:2) Sunday September 02, @07:20PM
    • Re:The US Navy Is Not Such A Secret (Score:5, Informative)

      by kestasjk (933987) on Sunday September 02, @07:21PM (#20446815)
      (http://kestas.kuliukas.com/)
      I guess everyone on Slashdot is a military commander who knows about the reasoning behind strategic positioning of aircraft carriers.. And why do you say that the enemy's air forces need to be neutralized before carriers can be used? Isn't that exactly what carriers are for?!

      One week before the Washington Times hyped the ONI report, the nominated commander of Pacific Command, Admiral Timothy J. Keating, testified before the Senate Armed Services Committee where he dismissed alarmist reports of recent gains in Chinese submarine development.

      "If the reports are fairly accurate, they are well behind us technologically. We enjoy significant advantages across the spectrum of defensive and offensive systems, in particular undersea warfare," he said according to Taipei Times [taipeitimes.com]. In an interview with the paper, Keating added: "Should it become necessary for us to put our forces [in harm's way], the development of Chinese submarines are [sic] a concern to us, but it is hardly an insurmountable concern."
      Source [fas.org]

      Also read about the low amount of use China's submarine fleet gets, and the inexperience they have:

      The implications of the low patrol rate are significant. The total operational experience for the entire Chinese submarine force is only 49 patrols in 25 years, corresponding to each submarine conducting an average of one patrol every third year.

      As a result, Chinese submarine crews appear to have relatively little operational experience and consequently limited skills in operating their boats safely and competently. It suggests that the tactical skills that would be needed for the Chinese submarine force to operate effectively in a war may be limited.

      China continues - at least for now - to use its submarine force as a coastal defense force.
      Source [fas.org]
      This basically amounts to China having never actually used their submarines as a nuclear deterrent, and since they have no ICBMs that can reach the US they have no nuclear deterrent against the US and a comparatively very limited navy. (Report [fas.org])

      The media loves to hype up China's military spending, but if you think China's grounded 1980's built subs, or the speculated five new Jin-class (Type 094) subs [fas.org], are going to make the US Navy "ineffective", or if you think aircraft carriers (the most expensive ships of all) are just for intimidating small nations, then you're a few warheads short of a nuclear power.
      [ Parent ]
    • Re:The US Navy Is Not Such A Secret by khallow (Score:2) Sunday September 02, @08:10PM
    • Re:The US Navy Is Not Such A Secret by Dausha (Score:1) Sunday September 02, @09:27PM
    • Re:The US Navy Is Not Such A Secret by SnowZero (Score:2) Sunday September 02, @10:14PM
    • Re:The US Navy Is Not Such A Secret by Kadin2048 (Score:2) Sunday September 02, @10:33PM
    • Re:The US Navy Is Not Such A Secret by cnystrom (Score:1) Sunday September 02, @10:47PM
    • Re:The US Navy Is Not Such A Secret by phildawg (Score:1) Monday September 03, @12:46AM
  • Re:The US Navy Is Not Such A Secret (Score:4, Insightful)

    by Black Parrot (19622) on Sunday September 02, @05:10PM (#20445763)

    The US has the mightiest navy in the history of the world, greater than every country's navy put together.
    "My name is Ozymandias, King of Kings: Look on my works, ye mighty, and despair!"
    [ Parent ]
  • Re:The real secret (Score:4, Informative)

    by G Fab (1142219) on Sunday September 02, @05:13PM (#20445787)
    I served for a long time.

    And I was exposed to all branches for long periods of time. You will not find a less gay friendly place than the Navy. Even the Marines are more tolerant. It's because of the hollywood archetyping of the navy as gay that the navy has had such a buildup of anger about it. The 1993 DADT policy greatly increased the problem, and violence against gays has increased by about an exponent from 1993-1999 (no idea of the exact recent statistic, but it has increased greatly up to today)

    Gays int he military are usually quite good. dedicated to serve in spite of additional hassle. The Brits have been open for a while, and they are, man for man, extremely effective. I'm not implying that there is some kind of problem with gayness in the military.

    But this is typical trash propaganda. Sounds ludicrously paranoid, but the fact is that there is an effort to portray soldiers as feminine weakling children or sociopathic monsters. You'll find most gays in the Army. You'll find the fewest in the Navy.
    [ Parent ]
    • Re:The real secret by pikespeakhiker (Score:1) Sunday September 02, @09:36PM
    • Re:The real secret (Score:4, Insightful)

      You'll find most gays in the Army. You'll find the fewest in the Navy.
      I served for several years as well. I was in the Army, but working in intelligence, I had contact with all the services. I wouldn't call the above an accurate assessment. Navy and Army were "baseline gay", from my experience, with what appeared to me to be the closest to civilian mix of gay:straight. The Army may edge out the Navy when you look at the "meat pancake" soldiers, like Rangers, for reasons I'll explain later (see USMC, below). I met somewhat more "self-openly" gay men who were in the Air Force, and a somewhat larger fraction of them than in the Army or Navy. But the Marine Corps? I swear, the Corps must be close to 30% closeted gay men. All the most rabid homophobic nutcases I've met were Marines, and you know anyone who gets that worked up about homosexuality has to have some personal stake in it. Really, it's not that hard to understand. If some percentage of kids are gay and grow up in creepy conservative places, then a certain number of them will come to an "obvious" conclusion: joining the military will "make a real man of me" and drive the fag-ness out. If you're thinking like that do you join the Navy? Hell no! Air Force? Hell no, those cream puffs don't fight unless they're pilots. Army, eh.... maybe, if you can get into a real he-man branch like infantry and go for Ranger training. No, the other three are all wishy washy. If you want to be a big tough boneheaded manly man, you go straight for the US Marine Corps.

      Of course, then you find out that "gayness" isn't something you can "drive out", it's just something you are. Then you become a jackass self-hating prick with a special chip on your shoulder about fags. Man, I tell ya' the USMC is rife with them.
      [ Parent ]
    • Re:The real secret by redalien (Score:1) Monday September 03, @03:44PM
    • Re:The real secret by geekboy642 (Score:1) Sunday September 02, @08:04PM
    • Re:The real secret by JonathanR (Score:2) Monday September 03, @05:40AM
    • Re:The real secret by G Fab (Score:1) Tuesday September 04, @11:31PM
    • 5 replies beneath your current threshold.
  • by spyfrog (552673) on Sunday September 02, @05:17PM (#20445825)
    (http://slashdot.org/)
    When WWII started, then the British fleet was the far most advanced, biggest and strongest fleet in the world.

    Still, the German Navy almost defeated them with their much more effective submarines.
    [ Parent ]
  • by greendoggg (667256) on Sunday September 02, @05:37PM (#20445995)
    Actually, this particular item is supposed to be kept a secret. These propellers are/were put onto the nuclear missile submarines, and they're designed to make as little noise as possible, so that the missile subs are undetectable, and thus in the event of nuclear war, the enemy is unable to stop our "deterent". So because of this, I'm sure the navy would rather not give out the secret of how to build an undetectable missile sub, because then the enemy (whoever that currently is) may be able to use the same tricks against us (an unstoppable "deterent").
    [ Parent ]
  • by turing_m (1030530) on Sunday September 02, @06:10PM (#20446269)
    "This is not such a big deal. Let the Chinese try to copy this. Then they'll only have to build the aircraft carriers, fighter jets, support ships to protect it."

    Considering that they build everything else in the world, I'd give them 3 years.

    But carrier battle groups and nation states are so 20th century. All you have to do to invade someone these days is walk over a border, set up a restaurant that serves tasty cuisine, make sure that you only buy raw materials and land, and have lots of children.
    [ Parent ]
  • by Sad Adam (1036862) on Sunday September 02, @07:02PM (#20446681)
    woooo! hahahahahaha! Squeels of a forest monkey! Except of course most of the world considers the US to be the bad guys. God help the US Navy indeed. It needs a few friends (or "collaborators" more to the point)
    [ Parent ]
  • by Bonobo_Unknown (925651) on Sunday September 02, @07:13PM (#20446767)
    "God Bless America, and God Bless the US Navy."

    You sound like a religious nut.

    God bless nuclear weapons... sure.
    [ Parent ]
  • Re:The US Navy Is Not Such A Secret (Score:5, Insightful)

    by gerardrj (207690) on Sunday September 02, @07:47PM (#20446995)
    (Last Journal: Friday November 10 2006, @10:38PM)
    Forgive my naivety but why would your god bless instruments of or an organization dedicated to perfecting death? Aren't "love your enemy" and "turn the other cheek" core teachings of jesus and of most Judeo-Christian religions?

    [ Parent ]
  • by X.25 (255792) on Sunday September 02, @08:23PM (#20447221)
    11 Carrier Battle Groups. The ability to project naval, air, and underwater force anywhere in the world The US has the mightiest navy in the history of the world, greater than every country's navy put together.

    This is not such a big deal. Let the Chinese try to copy this. Then they'll only have to build the aircraft carriers, fighter jets, support ships to protect it.

    God Bless America, and God Bless the US Navy.


    Ever occured to you that someone else spent time developing various types of I-will-hit-you-with-3-mach-speed-up-to-600km anti-ship (nuclear or standard payload) missiles, instead of bothering to build amount of ships to match yours? (not to mention that carrier is as offensive as it gets, and not many countries have a need to conquer the world - so they don't make/need them)
    [ Parent ]
    • 1 reply beneath your current threshold.
  • Wasn't a sat photo but an aerial photography plane... which makes it more of an airspace concern... dodgy Al Queda Cessnas loaded with bangsticks etc!
    [ Parent ]
  • by hax4bux (209237) on Monday September 03, @02:57PM (#20455261)
    Uncles Navy needs surface ships to escort boomers now? All is lost, the terrorist have won! I knew it was only a matter of time after they closed the Horse and Cow!
    [ Parent ]
  • 14 replies beneath your current threshold.