Илим жана Технология

How Sonar Works (Submarine Shadow Zone) - Smarter Every Day 249

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  1. SmarterEveryDay


    2 ай мурун

    This was an incredibly challenging video to make. The challenge came with getting the Navy to agree to the interview in the first place, then successfully navigating the interview without it being shut down. In the end, everyone was super professional and it was a really fun topic to learn about! I hope you enjoy, and thank you very much for considering becoming a Patron at (www.patreon.com/smartereveryday)!

    • Ze Pig Man 2

      Ze Pig Man 2

      Күн мурун

      so which is it? do nukes rool or do they drool?

    • Jeff B

      Jeff B

      Күн мурун

      My dad was a contractor for the navy with IBM for the skipjack class. He basically said everything about it is still classified and anything that you can imagine that sonar can do it has been available for over 20 years

    • Harvey Harrison

      Harvey Harrison

      2 күн мурун

      ​@kyle32121 Clearance typically lapses with a Job - it makes no sense for someone to retain a clearance unless they specifically need it. I would not be surprised if he got a clearance specifically to do the video, with a "task justification" of it being useful recruiting material for the navy... of course, you do need a security clearance to know clearance associated with a specific individual or topic - that's why you see often references to "sensitive material". If he did get a clearance he is almost certainly not allowed to mention any specifics about it. Interesting to speculate.

    • Anthony Jackson

      Anthony Jackson

      11 күн мурун

      Ah the waterfall display....until now I never fully understood it, our sound room guys weren't as good at explaining it...mind youbi learned how to identify a 4blade prop from a 3 blade...go deep, go deep, go deep 😁

    • Levi S.

      Levi S.

      14 күн мурун

      Destin will you do a video on the physics behind a wood fired oven? I've been looking at building one and everything I find on the internet seems more based on hype and popularity, I want to know how they work and what the best way is to build one please.

  2. Jay Richardson

    Jay Richardson

    51 мүнөт мурун

    This has overall been a pretty informative video. Having been a previous diesel power submariner from a allied country and sonar operator I would say that overall all the info you presented is pretty accurate. There are lots of other factors that get taken into account not to mention the actual operator skill involved in processing and determining what a contact is but great info from the limited info the navy provided you.

  3. Dizzyy Dreams23

    Dizzyy Dreams23

    56 мүнөт мурун

    You have already done it my friend You are going to become worldwide

  4. ezanchi


    Саат мурун

    Wow this is soooo cool!

  5. Egor Ivanov

    Egor Ivanov

    3 саат мурун

    That's so funny seeing them classifying and redacting all that active sonar info that we are taught and work with in university.

  6. Frank Jin

    Frank Jin

    5 саат мурун

    Tax payer appreciation lessons

  7. Kubi


    6 саат мурун

    It is kind of scary that our enemies know more about this than us American's who pay for it.

  8. Abbie Marshall

    Abbie Marshall

    7 саат мурун

    The petite silk uniquely grab because exclamation really measure save a gifted brick. savory, physical border

  9. adiero


    7 саат мурун

    Not to mention - Everything is moving, nor a word about doplering. :) Brave amzing people. Mightier than the waves in the sea! Thank you.

  10. DarkRedman31


    8 саат мурун

    Just searching with first results I found the same document in form of HTML/CSS webpage where the content is not redacted so I found the formula.

  11. Andersson Motors

    Andersson Motors

    8 саат мурун

    Learned the same thing from finding dory

  12. Jon Rayner

    Jon Rayner

    9 саат мурун

    The funny part is, is that after watching this I understand more of the passive sonar senses from “The Hunt for Red October”. Lol.

  13. Adam Kessler

    Adam Kessler

    9 саат мурун

    I love how vague they are. It’s kind of cool to think how much we don’t know

  14. ezra


    10 саат мурун

    If I met that chief in civies and he told me he was in the military, I'd confidently guess he was a submariner. Submariners with a lot of sea miles just seem...worn. Lol

  15. KEK


    12 саат мурун

    Thanks for coming down!

  16. Tristen's Madness

    Tristen's Madness

    12 саат мурун

    This was probably one of the most education videos I've ever seen... wow. Thank you Dustin!!!

  17. John Crafton

    John Crafton

    15 саат мурун

    As a former US Navy Sonar Technician, I truly enjoyed being a sonar operator, maintenance technician, supervisor, and even instructor. Each role was incredibly rewarding. I truly feel for this chief, as he has formulate his answers based on multiple criteria: Simplicity, effectiveness, and sensitivity. He needs to simplify otherwise abstract concepts. He needs to make sure he effectively answers the question, even when the question itself is loaded with inaccuracies. Lastly, he needs to ensure he doesn't divulge any sensitive, privileged, or classified information. By the time he reaches the rank of Chief Petty Officer, he likely has the experience to do most of this; however, it's still a difficult task - especially when the level of sensitivity may change from one moment to the next. They did a good job, all things considered. I've had to do this myself, and I truly dreaded it. That's why I feel for the Chief in the video. It's not an altogether enjoyable task to answer civilian questions when a) most of the answers are multilayered, b) most of the answers are very abstract to the layman, and c) much of how the US Navy uses SONAR is classified.

  18. danialphaomega


    16 саат мурун

    @ 13:16 That is OLD technology 🤣 they spoofed you! We have way better technology. Ill give you this much we cam fourm imagine in real time 😁 thats virtually undetectable.

  19. Ricardo Pesenti

    Ricardo Pesenti

    18 саат мурун

    The last segment about high school geometry was cute xD

  20. Navnath Nikam

    Navnath Nikam

    19 саат мурун

    My soul thanks you❤

  21. Adam Schindler

    Adam Schindler

    19 саат мурун

    The most important rule in steering a boat: If your relative bearing does not change, then you're on a collision course. EDIT: immediatley after posting this, I see that Destin explains it. The way that you break things down is exceptional.

  22. Thomas Gaudette

    Thomas Gaudette

    20 саат мурун

    You should've warned us that our minds would be blown at 18:45 lol. That was seriously the coolest 5 minutes and 12 seconds of content I've seen in a long time. I got smarter every second.

  23. Tech Cafe

    Tech Cafe

    21 саат мурун

    active sonar is supposedly quite harmful to whales, dolphins and marine life in general. what is the navy doing to eliminate, or at least mitigate, the damage being done from emitting high power sonar in the oceans?

  24. Daniel Dalton

    Daniel Dalton

    21 саат мурун


  25. Cody Works

    Cody Works

    22 саат мурун

    @smarterEveryDAy 20000 leagues under the sea is what made me fall in love with reading and novels. I still have the book. they were selling it at my highschool library my senior year.

  26. Bramulya Subagiyo

    Bramulya Subagiyo

    22 саат мурун

    destin!! i'm really enjoying this episode, really appreciate all of your videos, always be good destin!

  27. nurul syazana

    nurul syazana

    23 саат мурун

    mind blowing contents🤯

  28. promontorium


    Күн мурун

    My primary job in the Navy was like this "passive sonar" but with radar. That "database" was pretty much in our head.

  29. Will Carter

    Will Carter

    Күн мурун

    As a Submariner and Sonarmen, you're speaking the language of my people Destin. And to make it really sink in, they allow a qualified broadband operator, often the most junior enlisted guys onboard who could be just out of high school, to drive a 6 billion dollar warship.

  30. NullElement


    Күн мурун

    i'd make a comment but then i'd be on even more watch lists 😂

  31. littlebrit


    Күн мурун

    Sucks for Russia and China, because they can't pass by Japan. The straights are too narrow. Japan is like a big sub defense shield. That is why they use Murmansk and Sanya for subs. geography is much better at those ports.

  32. Alan Hazard

    Alan Hazard

    Күн мурун

    Sonar officer looked like he had not slept for a week.

  33. VeryBoredGamer


    Күн мурун

    in russia some girl got in prison for sharing accidental photo of some dude on her wedding........ and here i can see insides of submarine and even tags of crewmembers.

  34. Rustin Dudley

    Rustin Dudley

    Күн мурун

    We are doing alot of active sonar on this mission . rip the last greenland shark

  35. William Lamy

    William Lamy

    Күн мурун

    I so do LOVE this series

  36. Joshua Spicer

    Joshua Spicer

    Күн мурун


  37. VirlomiEntreri


    Күн мурун

    This was a fascinating series you did. I know you like reading (or listening to audiobooks), so would definitely recommend checking out Frank Herberts The Dragon in the Sea. Also, hello to a fellow Alabamian. :)

  38. Mark Durham

    Mark Durham

    Күн мурун

    Looking forward to more videos

  39. Jiří Sedláček

    Jiří Sedláček

    Күн мурун

    I am feeling a bit confused, I as many others was experimenting with an ultrasound meter on step motor... And that's how I imagined it... beeping 360, to get a nice layer of distances. But I never really figure out how to get 3d image. Now after watching this video, do I understand correctly that there is just one beep instead of many many beeps around? So there is no good way to get really 3d information about other objects?

  40. sebastien arnaud

    sebastien arnaud

    Күн мурун

    Hey ! the correct pronunciation of plongeur is identical to "plonjeur", the G is pronounced like a J as in january, being French this pronunciation made me laugh because it sounds German and not French.

  41. Tamas Mujnoi

    Tamas Mujnoi

    Күн мурун

    This guy reminds me of Martin Lloyd from SG 1. Looks and sounds :))

  42. logics


    Күн мурун

    Religious Nut.

  43. Joshua Baughn

    Joshua Baughn

    Күн мурун

    This is probably what goes through a whale's head when it's searching for prey.

  44. Three60five


    2 күн мурун

    A great country need not fear of talking about its greatness that's why it's a great country.

  45. Andrew Schnick

    Andrew Schnick

    2 күн мурун

    I knew of the Underwater Sound Channel. Years ago, I found this video lecture on KGkey that explored the Roswell 1947 incident but from a non-conspiratorial way where the lecturer explained that Maurice Ewing found out about a depth range where the temperature allowed a sound to travel a long distance w/o losing much signal strength. The lecturer went on that because of this discovery, the USAF during WWII had pilots carry orbs onboard their fighter planes to throw overboard because they had a crush depth in the underwater sound channel. Maurice Ewing also discovered an upper atmospheric sound channel at a certain height in the sky. This led the US Army to listen for Soviet nuclear weapons tests with Operation Mogul.

  46. MRH BKJK


    2 күн мурун

    I can Not thank You enough for this video.

  47. Faldrian


    2 күн мурун

    Okay, so Destin would have been easier been able to explain all these things without visiting the submarine (and having to deal with military personnel unwilling / unable to talk about things that are known to the public). Thanks for the video, the two explanatory parts were quite interessting, the guy telling us that they want to keep us in kindergarden left a bitter aftertaste (that you really don't want to play and fund them, as they won't like talking to you and look down on you).

  48. Arturo Arzadon

    Arturo Arzadon

    2 күн мурун

    The dashing shade randomly intend because authorization dewailly happen with a four frail decade. right, drunk drain

  49. tvx gamer

    tvx gamer

    2 күн мурун

    The flawless art ophthalmoscopically beam because latex certainly mend out a shy farm. delirious, voiceless name

  50. Brother Malachai

    Brother Malachai

    2 күн мурун

    15:35 I'm impressed with his knowledge of his manual. Reminds me of the really old Armor Crew Members (usually Gunner and TC) and mechanics who would know the tank and other equipment manuals from cover page to last page. All Three Volumes.

  51. Joseph C

    Joseph C

    2 күн мурун

    I recommend twenty thousand leagues. Read it. Loved it. If you are into sci fi

  52. neo


    2 күн мурун

    Thank you Navy for your tour...it was AWESOME!!!

  53. neo


    2 күн мурун

    Geometry was my favorite class in high school. I loved it because I understood it and got A's! lol

  54. neo


    2 күн мурун

    Great video! Love it!!

  55. AnimationGoneWrong


    2 күн мурун

    I only just got to checking out this submarine series now... WOW! Super informative (as much as they would let you) and amazing to see what life on board a sub is really like. The fact that you actually got to spend 24 hours on one is OUTRAGEOUS!!! I don't even want to know what you had to go through to get this video made. Nicely done!

  56. Ethan 2005

    Ethan 2005

    2 күн мурун

    4:44 Call of duty lobbies be like

  57. archie perkin

    archie perkin

    2 күн мурун

    Great video!! Would like to see a behind the scenes on the process of making a video from start to finish !

  58. Jake Perkins

    Jake Perkins

    2 күн мурун

    Can sonar hear pings from another ships sonar. By which i mean ship A makes a ping to look for ships, ship B gets hit with said ping and it starts heading back to ship A. Is ship A aware it was pinged.

  59. Dakota Picou

    Dakota Picou

    2 күн мурун

    5:39 actually that is the sound of a distant train using a K5LA horn. Just being nitpicky XD

  60. SrgCuddlez


    2 күн мурун


  61. Jack Ford

    Jack Ford

    2 күн мурун

    The spicy goldfish relatively rhyme because machine genetically spoil apud a hissing century. ready, endurable century

  62. Meow Milev

    Meow Milev

    2 күн мурун

    *The same crew crashes that sub in japan recently!*

  63. Micha


    2 күн мурун

    What are these people doing in their free time?

  64. LilAce!


    2 күн мурун

    Here for the MGS sounds.

  65. Adam Navigato

    Adam Navigato

    2 күн мурун

    I like to imagine when he got the footage back from the navy, they didn’t cut everything out, they just replaced it with a silly ‘technical difficulties’ style screen that says ‘Sorry, that’s classified’ with silly music playing for the entire duration of what would be the classified part, that would get old so Destin had to cut it out.

  66. sniperdoc8404


    2 күн мурун

    I love how cautious they were in this. A lot of what they discussed, and a lot of things they didn't even touch, are already addressed in PC games like 688 Attack Sub way back from 1989. There are more modern games that literally have repeated the mechanics of sonar in Jane's 688(i) and Sub Command. They had things like thermoclines, salinity, depth, pressure, etc. Nowadays, for the most part, the sonar on submarines still works the same way, except they are listening for things differently and use different methods to determine where a contact might be. ;)

  67. strkeout


    3 күн мурун

    I'm guessing these sub videos have taken so long to come out because the US Military is reviewing and editing before allowing these to be released.

  68. TrEaKoNN


    3 күн мурун

    The thing I love most about this video is how there's a cribbage record board between the XO and the CO!! Besidesthat , it's another great video from you Destin. ;)

  69. 3am BaCh

    3am BaCh

    3 күн мурун

    The lower frequencies are down here And The higher frequencies are up here 😂😂 this voice tho 😂😂😂🤣

  70. Dion Sparow

    Dion Sparow

    3 күн мурун

    0:08 that "NICE" sound satisfying

  71. Ozzie


    3 күн мурун

    This series really takes me back! When I was a ST we had our own sonar room with a door which gave us some privacy to goof off while underway. In the new subs I guess the sonar guys are just out there in the control room like lowly FTs? How sad! Also, its a shame they didn't let you sit at the broadband stack to hear some trawlers and biologics

  72. Jhonswal Basarte

    Jhonswal Basarte

    3 күн мурун

    There’s a movie exactly about sounds and stuff in the submarine I don’t remember how it calls but it was exactly about what he was talking about can someone tell me the name of it please?

  73. sailoryan


    3 күн мурун

    The submariners are the smartest guys on earth. Every one!!

  74. Rob Allen

    Rob Allen

    3 күн мурун

    That would've been fun to have a second camera on the XO just to watch him squirm as you started asking a question that rubbed up against that nogo zone. But, it was still a very short (interesting) 25ish minutes. On to making pizza... lol

  75. Ben Johns

    Ben Johns

    3 күн мурун

    CO and XO Cribbage Record at 10:03

  76. Kristofer Örn Stefánsson

    Kristofer Örn Stefánsson

    3 күн мурун

    It's 2:45am i have to wake upp at 7 😵

  77. ifeel sic

    ifeel sic

    3 күн мурун

    still very disrespectful to sit on a table literally in a nuclear sub. Why would you even think that is okay?

  78. Adam Navigato

    Adam Navigato

    3 күн мурун

    Every time you say the name of the ship, I just think of one of those old timey football announcers saying “Holy toledo!”

  79. Nathan Keel

    Nathan Keel

    3 күн мурун

    If the twats running this stuff would make all this so called classified information public knowledge, our technology would be much more advanced for the good of all. They act like our adversaries don't already have the same technology

  80. Kyle


    3 күн мурун

    I am beyond impressed with the detail and depth of knowledge of the crew

  81. Dave Nuts

    Dave Nuts

    3 күн мурун

    I have heard that if a diver is within a certain distance from the sub when it pings active sonar that it will liquify there organs. Is this true?

  82. =NolePtr


    3 күн мурун

    I know how you'd remove the interference from the ice above and the floor below. You'd need to mirror the environment across the boundaries (like looking through a mirror). With that there are some simple geometric ratios that arise, and you can filter out any times that are roughly fit within that. It's actually quite similar to that special relativity experiment in that regard, actually.

  83. Memo - P

    Memo - P

    3 күн мурун

    Your content and example is amazing! Thank you Sir!!!

  84. SkywalkerExpress


    3 күн мурун

    not just submarine, modern anti-ship missile has onboard library of various radar signatures to differentiate ship by classes/types.

  85. Ronald Rodriguez

    Ronald Rodriguez

    3 күн мурун

    On the multi-path, you can probably ping multiple times and simply get the baseline for the seafloor (assuming also that the topology/map of the ocean is a given and you know your position you can pinpoint the configuration below and take your depth) below and ice above (which is harder than the seafloor because it changes more than the seafloor and there really is no mapping reliable enough but you can still get the depth of the sub and therefore the relative time it would take for a ping striking the ice at an angle). Those two are more predictable. I would also assume that the ping is not singular. You then factor in that the object you are tracking is in motion (while the sub is the one in motion relative to the static solid ice above and the seafloor below). So the best way is to take multiple samples with these things in consideration and subtract the more static pings that come back.

  86. Ronald Rodriguez

    Ronald Rodriguez

    3 күн мурун

    They most likely can't go deep on the frequency discussion because opposing forces can make use of that to derive the range and how those ranges are interpreted. You can then design countermeasures to mimic similar objects emitting what is identified to be non-threats by their algorithm/standards. You can then basically pasa thru at least one defense layer (but there will be countermeasures for that countermeasures so better safe than sorry), among many layers.

  87. mrbrianbrush


    3 күн мурун

    14:28 idk what cribbage is but the CO is kicking butt at it hahaha

  88. Signal Detected

    Signal Detected

    3 күн мурун

    Now what I'm wondering is, in active sonar, is the emitted pulse isotropic or directed? I'm assuming isotropic as that's how it's usually depicted, but can a sub do directional sonar the same way radar is done?

  89. Chris Pi

    Chris Pi

    3 күн мурун

    You should try to watch the French Movie "Le chant du loup" that came out in 2019. It's about special officers in submarine that listen to the sound around the ship and categorize object manually.

    • Louis Mamakos

      Louis Mamakos

      2 күн мурун

      I grew up in the Washington DC/Baltimore area, and a bunch of the people that lived around me worked at the NSA in Ft. Meade. Some of them were ham radio operators, and I recall hearing stories about how some of the intercept techs could copy radio-teletype traffic in their heads just by listening to it.

  90. well, shit

    well, shit

    3 күн мурун

    I dont understand why some of this stuff is classified honestly, like the formula for best depth. It's like "Haha! Now I can find the perfect spot to put my U boat that I definitely own"

  91. Lester Crest

    Lester Crest

    4 күн мурун

    Submarines are nuts

  92. IRMacGuyver


    4 күн мурун

    I wonder how much of the blanked out video was due to asking about clearing the baffles with a crazy ivan or using towed array sonar.

  93. Jon Mandelbaum

    Jon Mandelbaum

    4 күн мурун

    I want those toy submarines

  94. Tim Jdido

    Tim Jdido

    4 күн мурун

    Obviously the russians know all this already, there driving there subs around too

    • Cplcrayons


      4 күн мурун

      the Russians aren't the only people in the world that aren't americans.

  95. Ceez B

    Ceez B

    4 күн мурун

    All the service men/women were excellent. Super chill and super knowledgeable... you can tell they wanted to be careful but show what they do. More videos like these!

  96. Tim Jdido

    Tim Jdido

    4 күн мурун

    Like all the info on sonar isn't already available online

  97. Denny Blessed

    Denny Blessed

    4 күн мурун

    Shout out to all of my submariner Brothers! Gets my blood going and stirs up memories of my time on the USS Drum 30 yrs ago!

  98. Scott Thayer

    Scott Thayer

    4 күн мурун

    You might be my new most interesting person who I’d like to have lunch with. Thanks again for a hugely interesting video.

  99. Neat Gifts

    Neat Gifts

    4 күн мурун

    Watched every episode of the "Smarter Every day" submarine series today. Every entry was incredibly fascinating. I was left with two questions that Destin didn't ask. If fire is their number one threat, then why are there wood panels and other flammable materials all over the ship? The other question, that may be more of why I don't hear NASA and others planing deep space human travel, and that is, it seems that submariners seem like the perfect (already trained) people for such missions to Mars and other multi-month long trips.

  100. isentropic troublesome

    isentropic troublesome

    4 күн мурун

    The nappy seashore counterintuitively yell because weasel hisologically chew despite a tearful carp. dreary, steadfast rugby