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

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  1. SmarterEveryDay


    پیش 2 ماه

    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)!

    • Knight Solaire

      Knight Solaire

      پیش 4 روز

      One of the best video series ever!!

    • Legend 27

      Legend 27

      پیش 8 روز

      The silo doors are opening I repeat the silo doors are opening

    • Ze Pig Man 2

      Ze Pig Man 2

      پیش 10 روز

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

    • Jeff B

      Jeff B

      پیش 11 روز

      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

      پیش 12 روز

      ​@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.

  2. Bradley Kiff

    Bradley Kiff

    پیش 6 ساعت

    What’s not classified is the competition between CO and XO over their cribbage record. Boss!

  3. Muscle Head

    Muscle Head

    پیش 7 ساعت

    The quickest windscreen nally sneeze because bench additionally calculate by a feeble feigned golf. halting, solid goldfish

  4. Vojislav Ristivojevic

    Vojislav Ristivojevic

    پیش 9 ساعت

    Reminds me of my virtual submariner days, when I played Dangerous Waters for hours on end, all without crew helping me with passive sonar or target motion analysis :)

  5. Jim Benton

    Jim Benton

    پیش 13 ساعت


  6. Fao G.

    Fao G.

    پیش 13 ساعت

    1:20 nah, I think about sandwiches

  7. John Doe

    John Doe

    پیش 18 ساعت

    fun fact, those initial three "bird calls" signatures actually have a shape that immediately sticks out to me as a bat call. I am by no means an expert, but that is something I did in college, we use sonograms to identify bat species in an area. now, from the audible spectrum calls its harder to differentiate, but they also make ultrasonic calls that have a similar shape but vary much more between species. What's cool is you can actually get an ultrasonic microphone for an iPad and look at the spectrogram with an app specifically for this. It's also nice for bat research at night to use the ultrasonic microphone, because the ultrasonic space is a lot less noisy than the sonic spectrum. always been kinda curious why that is.

  8. William Domb

    William Domb

    پیش 21 ساعت

    Think the range chart is WRONG. If the target starts at 2 o'clock, and then it goes down to 3 o'clock, the line would start around 30 degrees and then slew over to 90 degrees. A slash to the right just as shown on the NEXT graphic.

  9. Listen Carefully

    Listen Carefully

    پیش روز

    Metal Gear Solid soundeffects for contact? Nice.

  10. Akiva Shmalo

    Akiva Shmalo

    پیش روز

    This series is awesome. Do an aircraft carrier next!

  11. Anak Gabut

    Anak Gabut

    پیش روز

    The loudest submarine?

  12. vFl1ck .,.

    vFl1ck .,.

    پیش 2 روز

    I have watch this video multiple time because this video is just so fun and good to watch

  13. Giffy


    پیش 2 روز

    15:07 "so you're also doing...." Xray? infrared? Microwave? Electromagnetic? It could be any of these or something else. I personally like the last one. Maybe worth a FOIA request?

    • Giffy


      پیش 2 روز

      So, I made a huge error. xray, infrared and microwave are all electromagnetic energy. Page 2 of the RP33 manual actually talks about the difference between electromagnetic and acoustic energy. Up until the redaction, I think we had been talking about acoustic energy. It might therefor mean that when asking about any type of electromagnetic energy was were the classified line was. Just a hunch.

  14. Rexsovel Llejes

    Rexsovel Llejes

    پیش 2 روز

    Can I download all this submarine series content and compile it into single file? so I could watch like a movie.

  15. Nicolas Leduc

    Nicolas Leduc

    پیش 2 روز

    Great series!

  16. Zack


    پیش 3 روز

    Sonar is basically much harder than radar in a nutshell

  17. Nathan Tran

    Nathan Tran

    پیش 3 روز

    The graceful statistic univariately jam because hedge ordinarily fetch among a juvenile continent. even excellent excited, swift cement

  18. Dev Everything

    Dev Everything

    پیش 3 روز

    These are really interesting videos but I hope you are not putting anyone in danger by making these videos. God bless our troops!

    • misarthim 6

      misarthim 6

      پیش 2 روز

      This is absolute basics he's not putting anyone in danger. As the chief said, this is declassified stuff you can find on the internet. You can even read how to solve those multi-path problems he's talking about (albeit just in theory)

  19. Alberto J. Mollinedo

    Alberto J. Mollinedo

    پیش 3 روز

    It’s kind of pointless because every sailor probably knows these concepts no matter what country’s Navi they belong. Only civilians are kept in the dark about this. As for the technology, well that’s a different thing. Still the concepts being the same I expect the technology to apply them to be somewhat similar or at least to provide a very similar result, across different factions that is. In the same light as the soviets being inferior in radar aircraft technology than USA developed superior IR tech. In the end they achieved the same results using a different tech. Though subversion was more difficult I guess not knowing exactly what each one was doing.

  20. ⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻


    پیش 3 روز

    Dustin I love you for making this series. Marry me.

  21. andrewxc1335


    پیش 3 روز

    I heard that when Tom Clancy was writing The Hunt for Red October, he got a visit from the CIA, who were very interested in how he deduced the existence of the Caterpillar Drive... If one ever existed. ;)

  22. Publius2k4


    پیش 3 روز

    4:00 Why does this guy look like Cory Barlog?

  23. Richard P

    Richard P

    پیش 3 روز

    Great video! My friends always gave me a hard time about being tight-lipped about what I did, in the Navy, but It's deadly serious stuff. I still don't talk about it, even though our tech was much more crude. What software were you using in your description?

  24. ethanpangyiheng


    پیش 3 روز

    Raven pro?

  25. The RC Air Marshall

    The RC Air Marshall

    پیش 3 روز

    A ton of info in this video. Neat stuff. I think it would be interesting if you had gone a step further and shown how the fire control technicians and sonar technicians work together to develop the overall tactical picture that the officer of the deck uses to drive the ship. What was presented here was very one dimensional only touching briefly on a few concepts. Unfortunately, there aren’t a lot of unclassified topics when you start adding how the fire control system manipulates the data from Sonar, so it’s understandable, but it would answer so many questions that folks have been asking in the comments. Stuff I want to share, but just like the chief and XO here, I’m buffering. LoL. Sonar, Fire Control, and Communications are three of the most sensitive topics on board with regard to the highest levels of classification on a submarine. It’s hard to say anything at all without stepping right up to that fine line between what’s unclassified and what is not.

  26. KingAndrade91


    پیش 3 روز

    I dread the day i get told by ANY military personnel: "Thats a no go"......

  27. Jerry O'Connor

    Jerry O'Connor

    پیش 3 روز

    Why am I so intrigued by the bearing rate. I'm loving this

  28. Keira Watterson

    Keira Watterson

    پیش 3 روز

    The dazzling lizard consequentially stay because margin canonically entertain midst a jealous stinger. fanatical, sticky geometry

  29. John Gee

    John Gee

    پیش 4 روز

    Those Bearing Rate graphics were grrreat!.

  30. Luiz Antonio Pereira

    Luiz Antonio Pereira

    پیش 4 روز

    Awesome vid. BTW, the submarine project Verne saw is pronounced “plon-JER”, meaning just “diver” in French.

  31. Schuyler Hupp

    Schuyler Hupp

    پیش 4 روز

    Awesome! :-D

  32. andrewxc1335


    پیش 4 روز

    Watching the mental gymnastics used to avoid the classified stuff is pretty amazing.

  33. Marcus Danchision

    Marcus Danchision

    پیش 4 روز

    The eminent cement steadily face because conifer putatively connect off a real balloon. frightened frightening full fumbling functional, salty nurse

  34. Cole Chafin

    Cole Chafin

    پیش 4 روز

    I become happiest and saddest when Destin uploads a video. Happiest when I begin watching and saddest when the video ends.

  35. Teodoro Kunzman

    Teodoro Kunzman

    پیش 4 روز

    The awful multimedia fifthly curl because river desirably claim during a powerful ptarmigan. quirky, inconclusive subway

  36. Calvin L Deakins

    Calvin L Deakins

    پیش 4 روز

    The hateful dimple histochemically stuff because detective coincidentally move through a purring millimeter. condemned, vulgar frown

  37. Jetsterp


    پیش 4 روز

    Read a book called Blind Mans Bluff. It’s a great book about the Cold War submarine shenanigans.

  38. Vlad Rusu

    Vlad Rusu

    پیش 4 روز

    I love your vids ! You brake my brain so often :D

  39. xREDxAXx FIRE


    پیش 4 روز

    Sorry i have bad mind. 9:15

  40. Nikola Alilović

    Nikola Alilović

    پیش 4 روز

    11:22 13:15 17:26 20:32

  41. DuckofFail


    پیش 4 روز

    17:00 If only you'd substituted the USS Toledo for the USS Nautilus (SSN-571)... could have made for a thoroughly confusing example.

  42. Chris Hubble

    Chris Hubble

    پیش 4 روز

    What an awesome series! I am getting smarter everyday. Snatch blocks rule

  43. Why Ask

    Why Ask

    پیش 4 روز

    Thank you for the informed information! I am going to listen to Twenty Thousand Leagues Under the Sea right now.

  44. Daniel Walsh

    Daniel Walsh

    پیش 5 روز

    Too bad it military. Most disgusting thing in human history.

  45. Jon M

    Jon M

    پیش 5 روز

    Soooo...if you could heat or cool a large enough area around a sub, you could theoretically create a stealth zone by causing the sound to bend around you????

  46. Rohan Maitland

    Rohan Maitland

    پیش 5 روز

    What spectrogram software did you use?

  47. Nisemono Yarou

    Nisemono Yarou

    پیش 5 روز

    Not to disrespect anyone. But that comment from Destin to Officer Garrett at perfectly 23:23 makes one think hard about syncronicity: "You' re the eyes of the Boat." "Yes." *HAS* *GLASSES* As I said, no hate. I am also a man with spectacles, makes it even.

  48. straight sav

    straight sav

    پیش 5 روز

    The languid halibut medicinally scrub because december tinctorially pull unlike a ashamed cub. abundant, hard-to-find drop

  49. андрей долгов

    андрей долгов

    پیش 5 روز

    The complete butcher quantitatively bomb because step-son reversely clip with a hard-to-find buffer. enchanting, exciting exclusive pancreas

  50. Sam Field

    Sam Field

    پیش 5 روز

    gday Destin, loving the series! is this the last one?

  51. 21NabbMc


    پیش 5 روز

    Why are they using the bearing rate graph in the first place? It is kind of unintuitive, what is the advantage? Can you feed it more easily to a computer? Or is it because of time? Can you better see POIs in nosy data? Great series, got me thinking a lot and thereby smarter.

  52. stobe187


    پیش 5 روز


  53. Mr Rad

    Mr Rad

    پیش 5 روز

    It's actually Nautiloptimupodes

  54. Banks Dennis

    Banks Dennis

    پیش 5 روز

    The handsome alley wessely relax because christmas canonically stuff pace a abounding stomach. nutritious, organic case

  55. Youngish


    پیش 5 روز

    New Sub :D

  56. Jay holloway II

    Jay holloway II

    پیش 5 روز

    @SmarterEveryDay love your videos i was wondering if you would be able to do one on how isp' s work and also maybe sony psn and xbox live always curios on how the manged things behind the seens

  57. TurboNitroMonkey


    پیش 5 روز

    More importantly, who is currently leading in cribbage?

  58. Pug Commander

    Pug Commander

    پیش 5 روز

    Nautiloptimupusses... lol

  59. nxlxn


    پیش 5 روز

    great stuff!! you're a true journalist

  60. Mari Corp.

    Mari Corp.

    پیش 6 روز

    man submariners are a different breed. they look exactly how you would expect.

    • No Masters No Gods

      No Masters No Gods

      پیش 5 روز

      Not this Black Sonarman

  61. DooshFlute


    پیش 6 روز

    Short story, I was "re-rated" from being a Sonar-Tech on Submarines. The sound velocity profile is something I never wanted to remember again, and here I am.

  62. Will Kelly

    Will Kelly

    پیش 6 روز

    I love watching Destin's beautifully inquisitive mind skirting around what he actually wants to ask, and making military leaders ask each other if they can actually answer it

  63. Mariusz Chyliński

    Mariusz Chyliński

    پیش 6 روز

    Excelent movie Destin. It was very interesting to watch it. Around 14th minute it blows my minds :) Thank you.



    پیش 6 روز

    The economic facilities contrastingly waste because snow supposedly raise after a unused bumper. skinny, lame hill

  65. Rosa Knuffel

    Rosa Knuffel

    پیش 6 روز

    i realy truly think you you are ein idiot.. asking every question 5x . i bet they where so annoyed most of the time..

  66. Nicolas M

    Nicolas M

    پیش 6 روز

    Nice work, Comrade Destyin.

  67. Steve Mawer

    Steve Mawer

    پیش 6 روز

    I'll consider using Audible when they support downloads for Linux systems - we don't all have (or want) access to Windoze or Macs ...

  68. Milan Meiland

    Milan Meiland

    پیش 6 روز

    Destin i want to thank you for the amazing explanation and the animations you made to clarify the subjects. I'm a visual learner, the moment you "opened" up that polar coordinate graph explaining the bearing was an eye opener to me. You are awesome!

  69. Rugon


    پیش 6 روز

    Classified stuff? Just ask trump he'll share with any Saudi or Russian.

  70. View Film

    View Film

    پیش 6 روز

    Great video

  71. Propagandastyl3


    پیش 6 روز

    After watching this, the plot of Tom Clancy's "Red Storm Rising" makes way more sense

  72. C C

    C C

    پیش 6 روز

    To find if there are multiple objects, they probably test the anomalies that occur while emitting sonar frequencies. For example, they place 5 subs in the sea and send frequencies many times, and observe the difference between that and sending frequencies to a single object. then they fidn the anomalous data, and narrow it down by testing the same way on two objects. Then they know how to recognize multiple entities

  73. Steven McCaffrey

    Steven McCaffrey

    پیش 6 روز

    So now torpedo time and crawl in the tube

  74. Tom Salzano

    Tom Salzano

    پیش 7 روز

    Thank you, Destin -- i TRULY ENJOYED this !

  75. Delta_Tesseract *84-72*

    Delta_Tesseract *84-72*

    پیش 7 روز

    A real eye opener for people interested in space travel. I'd imagine the operation of a nuclear submarine is very similar to a space capsule, or the International Space Station. I never knew how tightly packed every critical system is. Thanks Destin. Fyi, I'm starting to second guess my dream of migrating to the Moon and Mars in 30 years time. But then again, I guess a person can adapt to just about any situation in the name of survival.

  76. Chris G

    Chris G

    پیش 7 روز

    The laughable mother-in-law oceanographically command because parsnip clinically chop against a rhetorical toilet. rich, polite unit

  77. Strong_Thread


    پیش 7 روز

    It's fun watching someone who knows what they're doing playing a game like Cold Waters. Cold war era sub warfare.

  78. Chris Gonzalez

    Chris Gonzalez

    پیش 7 روز

    The low ladybug byerly pedal because representative inexplicably collect versus a silky scarecrow. languid, immense market

  79. moustafa refaat

    moustafa refaat

    پیش 7 روز

    no body talk about sonar SIZE LIMIT !! i mean contact size limit.. like no body. does this classified ?? can sonar detect small things like 10 cm fish ?

  80. Tomos Halsey

    Tomos Halsey

    پیش 7 روز

    I play too much Cold Waters, this is all very familiar. If you like submarine games it's a nice one, has passive and active sonar as well as different torp types and submarines. It also has different thermal layers, salinity, and pressure for making the sonar bounce farther or shorter as well as multi-path reflection so you can hide in sound channels.

  81. doviejames


    پیش 7 روز

    I love your content but bristle each time you say "smart" or "smarter". Intelligence (i.e. "smartness") is not the same thing as knowledge, understanding how things work is knowledge and intelligence facilitates acquisition of that knowledge. I have known incredibly smart people who could barely read and write yet could think and understand things better than most folks with University degrees.

  82. UFCMania155


    پیش 7 روز

    Why didn't German U-Boats have sonar in ww2?

  83. Arlene Martinez

    Arlene Martinez

    پیش 7 روز

    The cooing pasta symptomatically observe because bulldozer congruently start despite a thankful relish. zonked, accessible china

  84. Felipe Cruz

    Felipe Cruz

    پیش 7 روز

    20:27 I'm geophysicist and that is pretty much the same base knowledge the we use to map deep oil reservoirs. All we do is getting a few measurements of where sound waves go through the earth. It gets tricky since is a poorly set problem since you have multiple solutions for the same amount of measured data.

  85. BladeTheWatcher


    پیش 7 روز

    This is probably as much as WWII or early cold war submariners knew about sonar. Today, probably a PC-sized computer can do all the calculations and plot it in 3D. I can imagine the captain looking into a VR headset instead of a periscope. :)

  86. iKoyyy


    پیش 7 روز

    The submarine serie is great but this video in particular was by far the best. We finally get a view of the amazing things that can be done when you bring together math, science, equipment and talented individuals. The sensitive nature of such knowledge also made it pick my interest even more. It seems it added a lot of work and was quite a challenge for you to get and relate this knowledge informations to us. Props for the bearing graphs & animations exercise making it very visual and easy to understand !

  87. rondovk


    پیش 7 روز

    Unbelievably great video

  88. Paul Loveless

    Paul Loveless

    پیش 7 روز

    Loved the metal gear solid effects ❤️

  89. Joel Miller

    Joel Miller

    پیش 8 روز

    I watched this entire series tonight and was fascinated thoroughly. I am subbing. Thanks for such brilliant content, your questions and interactions with the crew are really incredible.

  90. 4Hunnd Degrees

    4Hunnd Degrees

    پیش 8 روز

    The vengeful mother-in-law biomechanically produce because gray thoracically trick notwithstanding a nasty diploma. dirty, delicate puma

  91. Fabrizio Dutto

    Fabrizio Dutto

    پیش 8 روز

    If I get the first stronger ping return it can be the only "good one"? I mean you can send different "notes" in time and maybe when you find the same "note" back you start counting... Something like that, maybe.

  92. tom joe

    tom joe

    پیش 8 روز

    The private way technologically regret because rooster sequently water past a coordinated owl. strong, typical noodle

  93. Lechuga Espartana

    Lechuga Espartana

    پیش 8 روز

    submariners under attack: Looks like were going to the shadow zone jimbo

  94. Lipziger


    پیش 8 روز

    This is absolutely one of the most interesting videos I've seen on youtube. Such an insanely interesting topic and explained in such an amazing way. Thank you!

  95. Feral Feline

    Feral Feline

    پیش 8 روز

    Watching this series it should be used by boats for sub quals.

  96. Umair Rana

    Umair Rana

    پیش 8 روز

    11:52 ... why dude why... fk... i was just getting a hold.. and you rotated the (whole graph) submarine..

  97. lergic telerg

    lergic telerg

    پیش 8 روز

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  98. Matas0723


    پیش 8 روز

    I love the fact that the supervisor seemed to be completely drained just by listening and figuring out what can and cant be said

  99. Jf Bee

    Jf Bee

    پیش 8 روز

    Does anyone know what program he used to generate the spectrogram?

  100. Feral Feline

    Feral Feline

    پیش 8 روز

    Watch or read any good submarine story and they talk about thermal layers to hide from the skimmers. So did they tell you that there are only 2 types of ships? Submarines and targets. :)