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

hi there

Those people are such a great sports. Really admire them.

Do you know how many more videos in this series there will be?

Sup

I can imagine. These types of videos are always being combed for info. Same with most media😂

"Too smart. Dumb it down, Destin."

@@Zypher77777 we want it at kindergarten level 🤣

"Nice" The guy just said nice in the most meme-able way ever.

​@@jasperooms9210"Noice" 😂

Absolutely correct. I'm not on their level but I love it when my soldiers are able to tell me I'm wrong. It doesn't hurt me, it informs me and tells me that they're trying to be better than me which keeps me on my toes.

There is Stuff - fairly common everyday Stuff, not this "Cold War-Spy-Stuff" rather than f. E. the Time Plan for the Mess Hall - that is classified. And, there is also Stuff, you are not even allowed to answer in any Way - so also not denying it. It is often People say something Stupid just to avoid any further Questions and even "keeping silent" would be too much of an indicator. Knowing this, mainly all you can find on YT and such is outdated (WW1-Trechtactics), common knowledge ("THAT WAY ROUND you have to hold the Rifle. THAT WAY!") or common Sense ("All the Guys around you wear blue. Your Arm you see on Screen seems to wear Blue. So guess what you gotta do with the Red ones and what not to do with the blue ones?"). In that case, the Conversation went pretty fast into "How to find out and seperate Contacts" - which is highly classified - and so the Guy showed his CO "'s all right, I know how to handle this" and just went over to the Basics, away from the deep questions. Also, that Way he provided all Answers and everybody knew that any further Questions go into the "No-Go-Zone". I am more impressed of his Leadershipskills which I had not expected from this Guy.

yes, 100%

Please go and tell that to my boss

@@JRSLover411 This is valid in any boss role, a good boss can handle being challenged and you want employees that are as good or better in they specialty, your job is to get them to be their best, not to best them :)

And he's very good at asking technical questions in a way that's easy to understand

also, if i remember correctly, he has worked on military projects which are definitely classified. so he understands the background behind these things.

Pretty sure they pre-briefed him on what he could and couldn’t talk about. I don’t think they would have let a RU-vidr with a camera aboard an active nuclear submarine without laying down some ground rules before he showed up. He only makes note of it so the audience can keep up.

Destin possesses a natural (I presume) gift/skill of making those around him relax. And when we relax we can tend to let down our guard.

nah. completely over stated. everything destin asked is public knowledge. the only things clasified would be actual boat capability. all the concepts are the same. its the detail that the boat can get thats class.

@@funkmonsterjones4753 Great info!

@@funkmonsterjones4753 it's more effective at recruiting or getting kids interested in science/engineering/math which is ultimately Destin's goal. This isn't much of a show of force video. They use videos of missile launch tests and war games for stuff like that, not simple explanations of stuff that literally every sea-faring nation on Earth has known for decades.

@@funkmonsterjones4753 No one who is even midly interested in military power would be surprised by anything that is said/shown in this video. The USA has nuclear submarines in the Artic? Who would have thought about it, right?

@@tinchote It's the fact that this stuff is for civilian consumption. The military is usually twenty years ahead of whatever is declassified, so this video sets the bar. If Iran or NK are 10 years ahead of this, they can estimate that they are 10 years behind us. It's also scary for them to know how many American civilians actively educate themselves about military hardware and tactics, and that those people form communities who share intelligence with each other. Propagation of information is one of our strong suits. Especially among teenagers. That suggests a future where young Americans are more ready for war than our adversaries. All of these ideas add up to a great deterrent. Funk is right. Dustin himself realized his video on the Future of Warfare was a weapon in the cyber domain, just one of the domains of modern wars, and it's the one the military needs civilian help to operate in.

Hahahahahahahah

And is not allowed to :(

I knoow :/

I am a Navy vet and I will tell you one thing that is true about every sailor, we love proving our superiors wrong. I used to walk around with multiple policies in my pocket because there are "old" policies that higher ups still think are enforced and they have been changed or they simply don't know about. for example: I was a sailor who was sent to Iraq to help support Army operations, we wore Army uniforms, Army uniforms have some different standards for wear than Navy uniforms. Instead of issuing a whole new set of regulations for the uniforms the Navy simply issued a policy to basically state "The Navy members who wear Army uniforms will follow the Army rules for wearing said uniforms". My favorite was for backpacks, in the Navy the backpack had to be black or dark blue and could only be worn slung over one shoulder or carried. You could not wear a laptop bag slung over a shoulder or across the chest it had to be carried. The Army on the other hand didn't care how you wore the backpack as long as it was black and left your right hand free (for saluting) and laptop bags were authorized to be worn accordingly and had to be black. When I got back from Iraq I still had to wear my Army ACU's because they told us to leave all our other uniforms at home. I was waiting to transfer to my next command and the amount of times I had to whip out the regs because some Chief or Officer would stop to scold me for wearing my laptop bag was unreal. The satisfaction I got watching many a blood vessel bulge in some chiefs foreheads was immeasurable though. most were cool and were like "oh cool, lemme write this down so I can tell the other chiefs"

scttydsntknw and this is why the comment section over here rules. Thanks for that cool anecdote.

@@scttydsntknw Right hand free just for salutes or free also for your service weapon?

The friendly version of “I’d tell you but I’d have to kill you” lol

GHTVFUEJHXGHFHEFUFEDTDGDUFDKRGEIUTDIEFJNCGU3J,UEFNIE

Proof?

The right result but the wrong calculations.

@@wobblysauce Task failed successfully.

He already knows that stuff. They just couldn't talk about it here.

i love doppler effect. whenever i experience it I just perk up and I'm like "there's physics in action" Ambulances and music turning eerie and slow are my favorites

​@@foobarmaximus3506 we all already know about the Doppler effect, we just didn't think about it and how it is used in combination with all the confounding factors like lensing, multipath, etc. Simple radar/sonar is simple. Send a ping wait for response for ranging, listen using a phased array antenna for direction. But once you add in one or two or five confounding physics phenomena, rotating reference frames, the Doppler and lensing, etc, this stuff gets real hard to visualize real quick, and you need some signal processing to help you out.

I was hoping they would get into the towed arrays and other things related to that subject. But I’m sure not much of that would make it into the video. I’m surprised they let that much on passive sonar make it into the video. Everyone thinks about pinging sonar when they hear the term sonar. Not sure if the SOSUS will be able to get much attention in this series.

Is it ALL sound based or are there electromagnetic (I guess it would be radar) options too? Obviously under water the frequency bands used would need to be different, but is there any EM based stuff like that on subs?

”Earned a sub” Pun intended?

Trying to imagine the shielding on this stuff when signal loss is EVERYTHING

@@andrewmarthie5062 lol it’s “no-go” for a reason, especially on the internet, which could risk these guys lives. Not trying to get the DON on my case 👀

@@EisenFeuer down to the connectors, cable spacing from each other, and all different types of EMI cable shielding.

@@ticktology Waving a little buzzy magic wand in and around every corner?

You'll be a fan of Jive Turkey or Sub Brief then

Him and 3blue1brown are the two who always stun me with how both simple yet intricate the visual information is in their videos.

I post coordinates for different burial grounds within my videos

stuff agree, brilliant stiffI agree

I think he makes it up as he goes along. Its the only thing that makes sense

@@Soken50 an absolute honor being compared to 3blue1brown, Grant Sanderson is next level

ya, get a smart guy in a sub, you gotta make sure he's got clearance and trust first else such a guy can figure almost anything out. :P

He could sell out to the Russians if they offer enough poppeds

"I live in the shadow zone"- Batman

@@chrisgould101 "Ah, you think the shadow zone is your ally? You merely adopted the shadow zone. I was born in it, moulded by it" - Bane

Hello darkness, my old friend ...

i mean sure it's funny, but literally the whole video was ok'd by the navy before he posted it

Crazy Ivan

For lower-ranking, non-lifer blueshirts (i.e. not chiefs!!!), that phrase is addressed to the high-ranking officer as, "OH, SIR! I will SO bet you! I will bet you MY REMAINING ENLISTMENT, RIGHT NOW! Promise me my DD-214 and I'll GO GET THE MANUAL!!!" Heard it sooooo many times. Don't bet against the guy who owns the gear!

I also stopped watching this because it felt like getting that sonar checkout all over again

Subtle but savage, wasn't that our motto?

Props to chief. He could have just "we cannot talk about it" and Dustin could do nothing. He stood up just to tell Dustin (and us), not just himself

@@morgankwok5403 Best comment in the thread, “Props to the Chief”

Here's a question for you: how much does having a discerning ear come in handy as opposed to math skills? Is it more important to pick up the subtleties in sounds or to be able to crunch through a bunch of raw data?

@@margotrosendorn6371I can’t speak for submarines, because I’ve never worked on one. On a destroyer however, you will rarely have to listen to the information you are receiving. The important parts of the data you need to process and identify will be in front of you on your monitor.

My fellow STGs and I got a chance to go check out combat systems and sonar on the Arleigh Burke and we were so dejected when we got back to our sonar suite on our frigate.

​@@margotrosendorn6371It's all about data. You can't do it without the math. You have formulas and equations to apply to every frequency in hertz to again apply to various equipment, blade rates, types of propeller blades, number of blades, auxiliary equipment, speed, etc that would be impossible otherwise. You crunch the numbers and check your frequencies to determine exactly What type of contact you have. Actual "hearing" doesn't even come into it.

Cool. Thanks for serving with our Navy - Marine

Maybe you could provide some insight, then... why was there so much handwringing about revealing classified info, when it seemed that they were literally just explaining what sonar is and how it works? I mean this was mostly wave dynamics, surely this has long been taught in engineering courses, and at no point were they describing the capabilities of the vessel... so what gives?

@@marcellsimon6742 Quite simple, knowing the physics vs knowing how to process them are two completely different knowledge sets

​@@andrewdean1229i also imagine it is difficult to figure out what will help a sub safely navigate water versus helping them find you.

@@andrewdean1229 man can u guys talk about the info with ur friends/family. it must be really difficult.

An introverted life. Dull, bland and quiet... UNTIL you get them talking about their passion. We become animated, excited & completely different people. Want to see a reclusive person do a happy dance in public? Be like Destin in this video: listen, engage & deep dive in the subject matter.

He's used to mainpy talking to people who don't have the familiarity with mathematics to easily pick up the concepts being explained

This is about normal for bubbleheads, worked alongside them for awhile when i was in the Navy, weird guys but super smart. so smart they cant walk across the street unsupervised.

we engineers are humans but God just built us different

@@discretelycontinuous2059 This. I can't believe more people haven't figured this out yet.

That's one thing I loved about being in the Navy. The best officers were not afraid to admit when they were wrong, and encouraged the senior enlisted and other officers to firmly, but politely, challenge them, like how the Chief challenged the XO.

I loved the "I'll show you the manual" part. Sounds like the type of stuff I say all of the time and people just call me an @$$. "No, really, just listen--I'm right."

I imagine if you have a passive cue you can at least filter out the active returns that arent in a similar azimuth/elevation as as the passive cue. But still, the passive cue has it's own multipath problems. Its like, if you know where it is, you know where to look, but if you know where it is you dont need to look. Hmm. Im sure there are fancy computers that take all these things into account and fuse the data from multiple sensors and narrow down the error possibilities automatically. Neat stuff.

@@MattH-wg7ou *ONI would like to know your location*

@@spencerquimby4726 seriously though if I should delete that I will. Im not in the Navy and not read into any Navy programs. Just asking questions that came to mind.

@Matt H lol just a joke man haha. I work with commercial grade sonar pretty regularly.

A lot of these problems can be overcome by frequency agile sonar.

When you're in the military, knowing everything about your job is a requirement.

@@brenj Facts, also being knowledgeably and competent in your field is a great feeling.

questionable, he's a submariner, they all hate their lives, they're just there to survive their deployment and see the sun again and maybe get some fresh air and some puss

@@desolater010 It's in the 10 year plan.

@@desolater010 Lots of folks, perhaps most, end up in the job they can get, the one that they perceive as attainable. I know where I'd like to be, but often I don't know how to get there from where I am. OR, I might know that I need 6 years of college (that I can't afford) while I have to work a job that pays enough to support my family. Often, the course we are on is set by decisions we made years ago when we didn't understand all the ramifications or couldn't see the larger world. Sometimes those decisions were made for us by our parents.

Pluging them on right now!

I felt like I was cheating when he tested us on the graphs

Wow thats an awesome detail

Is your name really spelt with an ash like that? very cool if so. it's a shame we don't use æ anymore because it's a nice looking letter with a nice sound.

Yeah, me too. I especially like the part where he discussed [REDACTED] and went on to ramble about [REDACTED] too!

He was only on there for 24 hours?

@@Methoverbitches no, I'm pretty sure it was 24hrs

Actually he [DATA EXPUNGED]

@@phillxor He says in another video that he's hot racking with either the CO or the XO. I don't know exactly how long but I'm pretty sure it was more than 24 hours.

Right. Knowledgeable and professional. Humility that you want in a guy who *must* get it right for everyone to come home alive.

I ain't even that far, but I agree on principal.

Facts lmao 😂!

Thats chief to you shipmate

Why are you jalapinhisbusiness?

Start your own channel maybe? lol

You probably just leaked classified information 😬

Would probably be a bunch of "that's a no go" at different camera angles. 😂

Destin is smart. So there will be a few RU-vid vids about him getting cut off. The problems of asking smart questions

Presumably those parts of the conversation would have been deleted from the recording during the review process.

Same

It would be boring

It is was it is

There's a secret team of linguists working on that in area 51, they're also trying to figure out what the V in CVN stands for.

@@hedgehog3180 Cute Viking Nudity

well - that's an easy one - submarine is just some fancy new english term the Beatles came up with in the late 60s to not have it mistaken for a german u-boat ... aw - sorry - I know that's not as funny as yours - but hey, at least I gave it a try ^.^

@NICK IS AWESOME, best ask John Phillip Holland...... that guy described it as a ship that sinks.... but more importantly, re-floats! Interesting Guy ....

Honestly, I'm kinda impressed by that too. I understood it when Destin explained it, but the fact that he got it from what little the guy told him is genuinely impressive. Though, I suppose he perhaps had an idea already and it just pushed it forefront in his mind.

@@SondreGrneng i am supposing he had already researching the subject quite a bit before boarding the sub.

It's... quite easy to get if you play fps video games, and have some basic knowledge in reading graphs.

@@user-mv2nn6rw2w Not entirely sure how playing fps games would help but you do you.

@@SondreGrneng Because nearly every fps game have bearing markers to help you keep track of where objectives are without you having to open minimaps? Have you played any?

Agreed. When he said this how it works, I thought with an hour or two I could figure it out but then the diagrams did that in less than a minute.

@@tobyhallidie1498 A team of us worked on that. Thank you for Patreon support that makes it possible!

it is important to learn

There are so many things with Sonar which are available out there if you look, it's all very fascinating. Future Sonar maintainer and operator here

@@smartereveryday Thank you for what you do. You were asking all the right questions and I'd suggest reading about target motion analysis, you would find it very interesting.

Destin: "so i went on Google and found this"

@@Sorent1993 I remember when I was briefed on classifications they said “even if it’s unclassified and you can find it on Google, don’t tell them they can find it on Google.” Lol.

Pretty sure that was "--monitor passive RADAR??"

@@Willaev If it's unclassified, it's unclassified and can be released to individuals without a clearance. If it's classified even if you can find it online, you do not confirm that the information is correct or tell people where they can find it.

@@melodyqueen6432 ...or one a few dozen other things we do on subs. Cheers.

I fear his head might explode. Man gets excited!

@@KX36 LMAO ikr

Next thing you know he is getting heavily redacted for asking about asteroid prevention protocols. Lmao!

This sub videos someties feel like some of the submariners wish he'd be on the ISS instead of asked them questions. They are friendly, but there is sure some unease when Destin asks questions, especially in this video.

I wish NASA can bring him for free

We all agree

@@aligatorsandcrickets Thanks to you and my curiosity and ongoing quest for all available unprofitable information, I have discovered that alligators eat crickets. Thanks!

Like really beautiful ❤️

Hey Gareeb.

Why did you name yourself gareeb?

@@ashokiimc hello

@@cybergeek5476 gyaan ki Gareebi

Absolutely he makes math fun...

if its not boring, you learn

It's because he makes it intresting. Some guy with a monotone voice spouting equations isn't intresting, but some guy with a fascination genuinely enjoying it is

Because you're not learning. People watch these videos on RU-vid and then think they're super confident about whatever it is--that they now can do or understand the thing. But studies have shown that after about 24 hours to 1 week, you've learned nothing. Further, we tend to overestimate our ability to understand or do things when we watch other people do them in videos. "Oh I can do that--it's simple now that I know how". But knowing how and actually developing the physical or mental ability to perform that task are very different things.

@@thysonsacclaim are you saying after a week of learning material someone has not learned anything?

Great to know that Mexicorn engineers getting their education from you tube..

ikr

agreed

here's another reminder that you left this comment, it actually got a good amount of likes :)

I worked for the government and used to have to do this to explain why I was working late or if someone asked me what I did.

Like the DoD version of the startup tech guys Destin interviewed a couple years ago with the VR gloves.

Seriously. The mental calculus Destin made this guy do was insane.

1) Can I answer that? 2) Can I answer it in a way Destin (and his audience) will be able to understand it?

The military classifies stuff that some civilians know way more about, military intelligence is an oxymoron.

Teach him to play Cold Waters. He will love it.

That made me cry

Hard contact. maximum signal minimum noise content!

Same with a channel called The Great Big Story. It unfortunately ended this year.

Thank you Destin!

he's doing his own "active listening"

That guy was not a supervisor. He is an Officer and it is just a 2nd set of eyes to make sure it didnt go off into something that could expose classified info. Just worked as a backup.

@@Torpedomtb At first I thought the executive officer being there was pointless. The Navy was going to sanitize all his data, but that wouldn't help if he learned something with the camera off. I'm surprised he wasn't just given a list of questions that were okay to ask.

​@@fukkitful Yea it was pointless, the sonar sup is the highest expert on the topic on the ship. XO is like middle management, so he had to be there even knowing he doesn't know the topic. I do wish he gave more info as he was still far away from the line on many aspects, but seems the sonar sup was too scared to do that (don't blame him) since even public info can be class'd and while you can google it if he talks about it he'd be in jail.

they all seem drained. I guess living in a submarine would do that to you

If you ever talk to anyone that has worked on a sub the level of knowledge retention is truly amazing. They can legit regurgitate pages and pages of procedures and documentation.

You comment made my day 😂

Hahahahahahahah!!!

When he isn't tied up and stuffed in a locker somewhere on board!

So cool Dave! Love it!

wish I had this video when I was learning

so dave 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 ?

@@moustafarefaat6155 remember, he's discussing passive sonar, so the 'brightness' of his contact isn't based on size, but sound level. So, in dog units, a chihuahua-fish would be much brighter than Labrador-fish on the screen because of their sound output. There are some stunningly noise little critters in the water for their size.

Lmaoo

Nice joek

Planned on 1990, executed in 2020-2021

i mean, unpropable, but possible

You could also just learn all this signal stuff from electrical engineering by focusing on signal processing :D

This gave me quite the chuckle!

Ya it was the ultimate "what is classified vs not" pop quiz. I think he did well.

Not really it’s all gonna get screened by a professional censor before they release anything.

@@kekistanimememan170 the professional makes me laugh

@@kekistanimememan170 well its ofcourse also about what Destin learns (or rather is not allowed to learn) off camera, not just about what we get to see

The stuff they allowed to be shared is public knowledge. We know, they know so to say. The stuff they don’t want to share didn’t make it onto this video. As was said on the video with the manual review “you can find this on Google”

To be fair, this sort of stuff also acts as a sort of psychological/cyber warfare as well.

Trust that the officers have in their men, and the fact the men don't fear their officers is a great thing.

@@SVSky So true

Might have something to do with playing it at 1.5x and skipping the recap "explain a second time what we just said" parts.

Absolutely... the "shadow zone", oh my brain ....

I didn't believe you till i scrolled back up

I agree. It felt short and I didn't skip anything! I normally hate the sponsor thing, but I know Dustin has to make cash some how, and I can't join patreon because I can't afford to.

Yep!

Yes, for about the first three quarters of it, then got lost.

Yes, after wrapping my head around spherical harmonics this was a walk in the park in comparison :/ (I hate that I love physics)

I made a reading. What I did not account for was that the sub was also changing heading. Thats one crazy geometry problem.

Sort of

When you’re on the boat you deal with varying levels of classifications and declassified info that it’s hard to remember sometimes what is classified and what isn’t.

The teacher probably isn't like that because he probably doesn't know his job involved geometry and mathematics

@@alanknight217 . l ....

Why are so much stuff classified, like what is the Navy trying to protect? Can one not just find "classified" info on the internet?

@@dean3188 Operational and national safety obviously. If the methods and functions of equipment were to be leaked, it could lead to exploitable vulnerabilities. You also have to account for the unforeseable. Someone might exploit information that seems harmless. So keeping a tight lid and some obscurity around information is adding a layer of safety.

A CSGO weeb is also a submariner? Yeah right

No offence but the looks of your account don't really make that statement plausible lol

@@rolfbjorn9937 I'm pretty sure that most things a submarine can do is common knowledge among other superpowers especially Russia and Germany

He was very kind to me. He let me sleep in his room.

@@smartereveryday I'm a huge fan and am having difficulties believing I actually got a response from you. As a member of the submarine community, I am in love with this series. I appreciate the work you're doing and love knowing you're helping people get smarter every day.

Cameron you lucky dog. Destin is awesome and thank you for your service.

@@Smokeyxz Thank you for paying your taxes... helps to keep the military world going 'round. I hope you had a wonderful holiday season, Sir. I agree, Destin is pretty great.

@@smartereveryday Well the nights at sea get cold and lonely you know... ;-)

The closest US equivalent would be Guantanamo bay XD

@@neurofiedyamato8763 or a liberal college campus lol

@@catseyes2334 cod

Probably would've given him a in deph view of the torpedo fire sequence, first person view, more than the vid on it if you know what I mean.

@@catseyes2334 oh yeah. AN ANother, archetypical Internet victim of zee damned Gulag. And of course "God bless America", because how it is possible to not finish like that?

Funny, I've been a free man for close to 40 years and still say "I can neither confirm nor deny".

30 years since I sailed on the USS Ohio SSBN 726. Use that phrase all the time. Watching has kind of been like coming home.

I think he discovered a new training plan for Olympic track and field athletes. Forget about training at high altitudes to build lung capacity! Just keep out running the polar bear! Whoever's left makes the team.

My grandad was a civilian contractor for the Navy, with Westinghouse-the company that made the Navy’s nuclear reactors. My grandad’s specialty was metallurgical engineering, specifically, how the structure of metal alloys changes under the intense nuclear radiation found inside a reactor, and how to detect those changes. So he actually helped to design the reactor vessel on the USS Nautilus...something we didn’t learn until many years later, once that reactor design had become obsolete.

@@lmamakos You don't need to outrun the polar bear, you just need to outrun the other guy.

I'm amazed he could outrun a polar bear, the things are suprisingly fast and highly aggressive in the wild.

Na wer ist denn das? ;)

Lol Breaking Lap ist einfach hier

Love the videos. Keep this upppp

Bin auch überrascht I am really surprised

Yes 500 person to like

A lot of times when a submarine is told they are gonna have a “rider” they aren’t given much info ahead of time so unless they watched his channel before he got on board they probably have no idea who he is or his background or education level

@@betnav1288 I'm sure the officer's are given more information then the rest of the crew. Also through word of mouth from someone who knew his channel may of spoken up. That being said, it probably took awhile for Destin to be allowed to board that particular Submarine so the officers had time. I know not everyone knows about him and his channel but the, I forget the number, 10 Officers(?), maybe one knew. Unsure as I know it wasn't at full capacity at the time. I'm sure they had a discussion of who I am and what I do sort of thing with the officers when he boarded, off camera.

@@Degenerecy they probably had a quick brief about who he is but probably not with the chiefs (the guy who said that was the sonar chief). I was on submarines. When they had a film crew come film our submarine for a 4 part special series they just told us there would be a film crew try to stay out of there way.

If just one person on that boat knew who Destin is they all knew. Scuttlebutt travels faster than light.

Well said.

I hated math in high school and went on to be near the top of class. my Navy Avionics School. My last job before retirement was working a big gateway satellite earth station.

I always hated the cliche saying, "this type of math is dumb, I'll never use it". It's always from someone struggling to improve their career and can't figure out why they're going nowhere fast.