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

күнү жарыяланды 2020-ж., 26-дек.
Көрүүлөр 2 279 592

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  • 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 (!

    • Legend 27

      Legend 27

      3 күн мурун

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

    • Ze Pig Man 2

      Ze Pig Man 2

      5 күн мурун

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

    • Jeff B

      Jeff B

      6 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

      7 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

      16 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 😁

  • Nisemono Yarou

    Nisemono Yarou

    7 мүнөт мурун

    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."

    As I said, no hate. I am also a man with spectacles, makes it even.

  • straight sav

    straight sav

    49 мүнөт мурун

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

  • андрей долгов

    андрей долгов

    4 саат мурун

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

  • Sam Field

    Sam Field

    5 саат мурун

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

  • 21NabbMc


    7 саат мурун

    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.

  • stobe187


    10 саат мурун


  • Mr Rad

    Mr Rad

    10 саат мурун

    It's actually Nautiloptimupodes

  • Banks Dennis

    Banks Dennis

    11 саат мурун

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

  • Youngish


    14 саат мурун

    New Sub :D

  • Jay holloway II

    Jay holloway II

    16 саат мурун

    @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

  • TurboNitroMonkey


    16 саат мурун

    More importantly, who is currently leading in cribbage?

  • Pug Commander

    Pug Commander

    16 саат мурун

    Nautiloptimupusses... lol

  • nxlxn


    17 саат мурун

    great stuff!! you're a true journalist

  • Mari Corp.

    Mari Corp.

    17 саат мурун

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

    • No Masters No Gods

      No Masters No Gods

      6 саат мурун

      Not this Black Sonarman

  • DooshFlute


    18 саат мурун

    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.

  • Will Kelly

    Will Kelly

    21 саат мурун

    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

  • Mariusz Chyliński

    Mariusz Chyliński

    23 саат мурун

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



    Күн мурун

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

  • Rosa Knuffel

    Rosa Knuffel

    Күн мурун

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

  • Nicolas M

    Nicolas M

    Күн мурун

    Nice work, Comrade Destyin.

  • Steve Mawer

    Steve Mawer

    Күн мурун

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

  • Milan Meiland

    Milan Meiland

    Күн мурун

    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!

  • Rugon


    Күн мурун

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

  • View Film

    View Film

    Күн мурун

    Great video

  • Propagandastyl3


    Күн мурун

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

  • C C

    C C

    Күн мурун

    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

  • Steven McCaffrey

    Steven McCaffrey

    Күн мурун

    So now torpedo time and crawl in the tube

  • Tom Salzano

    Tom Salzano

    Күн мурун

    Thank you, Destin -- i TRULY ENJOYED this !

  • Delta_Tesseract *84-72*

    Delta_Tesseract *84-72*

    Күн мурун

    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.

  • Chris G

    Chris G

    Күн мурун

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

  • Strong_Thread


    Күн мурун

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

  • Chris Gonzalez

    Chris Gonzalez

    Күн мурун

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  • moustafa refaat

    moustafa refaat

    Күн мурун

    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 ?

  • Tomos Halsey

    Tomos Halsey

    Күн мурун

    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.

  • doviejames


    Күн мурун

    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.

  • UFCMania155


    2 күн мурун

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

  • Arlene Martinez

    Arlene Martinez

    2 күн мурун

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  • Felipe Cruz

    Felipe Cruz

    2 күн мурун

    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.

  • BladeTheWatcher


    2 күн мурун

    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. :)

  • iKoyyy


    2 күн мурун

    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 !

  • rondovk


    2 күн мурун

    Unbelievably great video

  • Paul Loveless

    Paul Loveless

    2 күн мурун

    Loved the metal gear solid effects ❤️

  • Joel Miller

    Joel Miller

    2 күн мурун

    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.

  • Dj johnson

    Dj johnson

    2 күн мурун

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

  • Fabrizio Dutto

    Fabrizio Dutto

    2 күн мурун

    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.

  • tom joe

    tom joe

    2 күн мурун

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

  • Lechuga Espartana

    Lechuga Espartana

    2 күн мурун

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

  • Lipziger


    2 күн мурун

    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!

  • Feral Feline

    Feral Feline

    3 күн мурун

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

  • Umair Rana

    Umair Rana

    3 күн мурун

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

  • lergic telerg

    lergic telerg

    3 күн мурун

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  • Matas0723


    3 күн мурун

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

  • Jf Bee

    Jf Bee

    3 күн мурун

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

  • Feral Feline

    Feral Feline

    3 күн мурун

    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. :)

  • Donovan Guilfoyle

    Donovan Guilfoyle

    3 күн мурун

    I still want to know about sleeping and showering

  • Bret Morgan

    Bret Morgan

    3 күн мурун

    20:00 love the MGS sound effect!

  • Daniel Walters

    Daniel Walters

    3 күн мурун

    It's totally declassified, pulls out a copy of 688 Hunter Killer from 1997. P.S. these videos would have made that game so much easier to figure out.

    • Daniel Walters

      Daniel Walters

      3 күн мурун

      That wonderful feeling of thinking you have a shot at your target free and clear, launching your first torpedo, only to hear a torpedo coming out of the shadow zone directly parallel to your hull. Just a game, but that moment of phuh is permanently embedded in my brain

  • Oakstrom


    3 күн мурун

    Are you going to talk to a Reactor Operator? I was hoping to see someone I recognized lol

  • TheEmeraldSword


    3 күн мурун

    I was gonna make a joke comment on how a lot of this is classified, *but I'm afraid that's classified.*

  • Rogelio Paran

    Rogelio Paran

    3 күн мурун

    If you’re getting returns from the surface and the bottom why not just take the depth of the submarine, calculate the amount of time it takes for sound to go to the surface and bottom then cross reference those times with your return signals? It sounds more then likely you’ll be able to “hear” the target then once you do jot it onto a piece of paper how long it took then when you hear more returns from the surface and bottom colliding into the other vessel use them to try to isolate the location?

  • Douglas Blair

    Douglas Blair

    3 күн мурун

    All brought to you by an Enlisted Navy Chief - who may have a degree - but doesn't need one to challenge you and keep America Secure.

  • Truckinhertz


    3 күн мурун

    I'm halfway through this video and feeling confident in my new ability to build a submarine!
    Four minutes later - I quit! 🤯 lol

  • Adric M

    Adric M

    3 күн мурун

    one of the few times ive actually loved the sponsorship part almost as much as the video.

  • Jonathan


    3 күн мурун

    This guy Destin is smart, but lacks some emotional intelligence. 26:24 awkwardddd

  • January Success

    January Success

    3 күн мурун

    The naive shame syntactically stare because friction endoscopically gather pro a elastic bee. ambiguous, public break

  • Brazilian Gentleman

    Brazilian Gentleman

    4 күн мурун

    imagine fishing in a submarine

  • wrightmf


    4 күн мурун

    Answered my question why subs don't ping all the time like the Seaview on "Voyage to the Bottom of the Sea." Great soundtrack for a TV show but not practical to broadcast "here we are, here we are, here we are, ..."

  • Desert Racer

    Desert Racer

    4 күн мурун

    I freakin love military science.

  • Sk0lzkiy


    4 күн мурун

    Me: That purple line is obvious lol
    Destin: lets step it up a little
    My brain: *panicking*

  • Jay Richardson

    Jay Richardson

    4 күн 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.

  • Dizzyy Dreams23

    Dizzyy Dreams23

    4 күн мурун

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

  • ezanchi


    4 күн мурун

    Wow this is soooo cool!

  • Egor Ivanov

    Egor Ivanov

    4 күн мурун

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

  • Frank Jin

    Frank Jin

    4 күн мурун

    Tax payer appreciation lessons

  • Kubi


    4 күн мурун

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

  • Abbie Marshall

    Abbie Marshall

    4 күн мурун

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

  • adiero


    4 күн мурун

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

  • DarkRedman31


    4 күн 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.

  • Andersson Motors

    Andersson Motors

    4 күн мурун

    Learned the same thing from finding dory

  • Jon Rayner

    Jon Rayner

    4 күн 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.

  • Adam Kessler

    Adam Kessler

    4 күн мурун

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

  • ezra


    4 күн 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

  • KEK


    4 күн мурун

    Thanks for coming down!

  • Tristen's Madness

    Tristen's Madness

    4 күн мурун

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

  • John Crafton

    John Crafton

    4 күн 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.

  • danialphaomega


    4 күн 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.

  • Ricardo Pesenti

    Ricardo Pesenti

    5 күн мурун

    The last segment about high school geometry was cute xD

  • Navnath Nikam

    Navnath Nikam

    5 күн мурун

    My soul thanks you❤

  • Adam Schindler

    Adam Schindler

    5 күн 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.

  • Thomas Gaudette

    Thomas Gaudette

    5 күн 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.

  • Tech Cafe

    Tech Cafe

    5 күн 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?

  • Daniel Dalton

    Daniel Dalton

    5 күн мурун


  • Cody Works

    Cody Works

    5 күн 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.

  • Bramulya Subagiyo

    Bramulya Subagiyo

    5 күн мурун

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

  • nurul syazana

    nurul syazana

    5 күн мурун

    mind blowing contents🤯

  • promontorium


    5 күн мурун

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

  • Will Carter

    Will Carter

    5 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.

  • NullElement


    5 күн мурун

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

  • littlebrit


    5 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.