Why Nuclear Submarines Cannot Touch the Bottom
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- Опубліковано 20 сер 2022
- Why Nuclear Submarines Cannot Touch the Bottom?
Nuclear submarines use radioactive fuel to turn water into steam. The resulting steam rotates turbine generators, which produce electricity to propel the ship and power various onboard equipment. Radioactive materials release thermal energy in the process of nuclear decay. A huge amount of energy is released in the process. On a nuclear submarine, this process takes place in the nuclear reactor, which is continuously cooled with intake water to avoid overheating the reactor. The intake water device for cooling the reactor is located in the lower part of the ship. Because of this design feature nuclear submarines are not supposed to touch the bottom of the sea, but are kept from the bottom at least 40 meters deep. In order not to spoil the cooling system of the nuclear reactor.
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#Missile
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#Education
#Math
#US Navy
#nuclearsubmarine
#aircraftcarrier
#navy
#russia
#submarines
#nuclear
#military
#typhoon-classsubmarine
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That's why they don't touch the bottom...
I must be stupid, I thought it was to avoid crashing.
Me also.
Some subs do rest on the bottom in shallow areas at times. But obviously not with modern nuclear subs. Unless they’re designed for it. I wonder if some of Russia’s spy subs that are designed to work on the bottom (like splicing into communications cables) have the ability to rest on the bottom; maybe with “landing gear?” It’s an interesting question to ask an expert.
@@keirfarnum6811 I'm positive they have that ability. With unlimited budget and resources the possibilities are unlimited.
Yes, silly me too!
@@keirfarnum6811
Since the Russians can’t punch their way out of a piss-soaked paper bag in Ukraine, we’d have to say no.
Their subs probably leak like sieves, as to the hydraulics systems on their aircraft.
Russia is a paper bear.
Little known fact - cars are not allowed to park inside fires because engines requires cool air for efficient engines
BWAAAHAHAHAHA! 😂 Thanks for clarifying this, I was planning to start parking in fires, you know for the camouflage!
thanks professor
No wayy really??)))
Ayyyyyyooooo famalam 😂😂😂😂😂😂
No way! I didn't know! Thanks for saving my life, I was about to park in a fire😮
I mean there's also the whole water pressure crumpling the whole boat like a tin can thing too.
Water isn’t always a mile deep though is it
@@simonshotter8960 Not always. But the average ocean depth is 2.3 miles. So, tin can.
Going down those extra 40 meters to touch the bottom isn't much. Arctic is mostly shallow and they love to play under the ice there .
You can do shallow water operations you'll be amazed where they can go and some designs can divert the intake to be able to "touch" the bottom
@@trc8197 Back in 1980:
We hit the seabed very hard on USS Finback (SSN-670). We were 300 feet deep, steaming at 15 knots. NOW, I realize how lucky we were. If the seachests had gotten plugged up, the SSTG’s would have gone offline, so no primary reactor cooling water‼️ - meltdown - death!
-
XO: we are in the Marianas Trench.
Captain: keep it 40 meters off the deck
Ayy ayy captain
High pressure left the chat
It's the Mariana Trench, not the fuckin "Mariana's Trench".
It doesn't belong to some lady called Mariana...
@@InglesDinamico100🎶Under pressure🎶
Comments by dummies
This video is not for educational purposes. // Trident Submarine Reactor Operator
Why couldn't he just say hydolancing hx sucks? The way he pronounces "turbine" grates my nerves.
Yes, clearly I think the poster thought trending topic and spliced some video clips without knowing how things operate, which is not a bad thing with the need to know for the safety of the crews operating them.
Billy, you are right. Telephone, television, tell a chat, and the world even knows how many layers of paint is on a ship, and why. Even the enemy is reading and listening.
@@jacoblecoy3700 I know you can find far more information on the Wikipedia entry for stinger missile than I was ever taught, which we were told was classified.
@@randallmorris7200 -
The weird pronunciation of the narrator may be because it is spoken or generated by a computer, not by an actual human. This does not sound like a human.
I think that, in some regions of the world, they do pronounce “turbine” differently. (like maybe in England)
Stop putting question marks at the end of declarative sentences:
Why nuclear submarines can't touch the bottom.
Yes, exactly. I was going to say that too but the authors never read the comments and they also have poor English skills and know zero about the subject. It’s all a copy and paste job to get views and subscribers.
The first one is not a sentence. Remove the "why" and it becomes a sentence/statement. Otherwise, it is a sentence fragment - not a complete thought. However, I do agree that "writing" these days is, at best, mediocre and often abysmal. Don't get me started on "to, too and two"!
@@reviewerperson4906The use of there instead of their winds me up.
@@reviewerperson4906thanks professor 👨🏫
Lol you got that dumb ol boy to edit his title 😂😂
I must remember that next time I'm driving one thanks for the heads up
Greetings: Yeah, Remember the next time U dive- do not touch the bottom.
beep-beep! Subbin' thru!
Yeah, you might overheat the reactor, nevermind piercing the hull and taking on water ... thats only a secondary concern ...
😂😂 💀
@@illitero😂😂😂
The video was close to be correct. Yes the intake is through a valve called Main SeaWater(MSW) and they are located on the bottom of the hull. This seawater is brought in and distilled into fresh water for the secondary system which is not connected to the primary system which actually interacts with the reactor. The Soviets had a class of su which had MSW valves on the bottom and top of the hull which allowed them to sit on the bottom in “shallow” water outside of enemy Potts.
Now that's smart soviets.
Do we have to tell it All 🤔
Always good to keep an eye on enemy Potts
@@jimmysapien9961 you think adversaries don't know the general outer designs? Come on now.
Russia could probably build an F-14 part by part if they wanted to. I'm sure they have much more of a detailed idea of many western sub designs. Random YT comment isn't going to make them go "A-ha!"
Why cant the intakes be on the side in case if the sub would need to land on the bottom?
Oh, crap, anyone remember that moment in Hunter Killer when they practically drive the submarine into the seabed to avoid the ordnance sent after them by the Russian destroyer?
Exac5what I was thinking about
Exactly what I thought of as well.
I don't know about today's subs but during ww2 they use to what they call bottom the boat to evade the enemy destroyers.
'm only talking about nuclear subs. Diesel submarines can go down. This maneuver was often used during WW2
They still do but when they said bottom the boat they mentioned to get as close as safety possible.
@@substec is it same case for the French nuclear subs? Probably classified information.
@@substec Nuklear Subs are capable of sitting on the Bottom too. It was actually was a common tactic by Soviet nuklear subs like the alpha class in the Cold War. The reactor is actually cooled by liquid metal. Sea water is only used for the heat transfer or as an emergency coolant.
@TruthSeeking Endless
Radar doesn't work in water. Sonar does.
Thank God I saw this we were just minutes from dropping a typhoon into my bath tub
I dropped an Akula into the toilet bowl this morning!
@@sparky4878 That must have been a relief. I know it is for me. 😊
Do you prefer a hot bath or Akula one?
Me too!
Akula sub reporting !
Subs don't just touch the bottom, they ram into it.
I see what you did there
Case in point the movie Hunter Killer
@@danielasare1165 oh wow I love that movie you know there's a set of books I think there were number five right now.
They have to be crushed first though.
Not ture but a captian would be removed from the post if you call in saying hey we touched sand or silt.
Military submarines dont really go below 2000ft depth or they would be crushed by water pressure.
I just love how I’m getting recommended so many sub videos all the sudden
Same here
Ship? Think you meant ‘boat’
Indeed. As soon as the video called the sub a ship you knew they didn't know what they were talking about.
Say "boat" to a man in the Navy, i dare ya lol
@tincupnickleboy the 1st every submariner refers to their sub as "boat" 😂
@@tincupnickleboythe1st700Ships are targets.
I like that he only replies to comments that don’t call out his BS
yeah, also this is obviously an AI voice.
This nuclear powered submarine just sounds like a steamboat with extra steps.
I was a submarine reactor operator. I just boiled water using hot metal instead of shoveling coal.
There were coal fired steam submarines before. Most submariners don't even know about the K Boats.
Well that’s because they are, you’re just replacing say coal or wood to produce the heat with uranium fuel rods.
There is a company designing small nuclear power vessels to replace the coal fired boilers in terrestrial power plants. The rest of the steam turbines, etc are reused. I doubt it would ever get approved, at least in the US.
Nuclear power plants are also just using steam power. Clean renewable energy.
The water that cools the reactor is fresh water which is seperate than water that drives the turbines which is fresh as well. They cool the turbine water with sea water that comes in valves all over ship not just bottom
fresh water does not cool the reactor primary coolant is pumped to the reactor to be reheated and it cools the reactor also reactor uses demineralised water as fresh water can lead to rust in the reactor
@@gren8800 You would also be incorrect. It's deionized water which is slightly different. Also, it doesn't prevent rust. In fact there's a pretty hefty rust layer on everything in the primary, some of which is intentionally done.
@@ryannelson8717 there definitely is 0 rust in the reactor compartment its tip top at all times looked after
@@gren8800 How are you gonna go from inside the primary to inside the Reactor Compartment... Inside the primary there is plenty of rust commonly referred to as corrosion since many of us Americans associate rust specifically with Iron components. Inside the primary there is a nice hefty layer of 'rust' aka corrosion, it's part of the reason why chemistry control is placed where it is to keep that rust layer intact instead of turning to a mush in the wrong pH band. Were/are you even a nuke?
That was a great way of putting the difference between BWR and PWR systems into layman's terms. Well done.
The poster of thos video does not have a clue what he is talking about.
Ignore.
Agreed. UA-cam clickbait.
Admiral Nelson probably knew this when he was in command of the Seaview.
This is The U.S.S. Seaview SSRN-1. The Extrordinary Submarine in all The Seven Seas. It's public image is that of an instrument for Marine Research; in actuality it is the Mightiest Weapon afloat and is secretly assigned to the Most Dangerous Missions against the Enemies of Mankind.
But Admirable Nelson built and commanded the seaview so he must have a workaround for his bottoming out and he sent electric charges through the hull! WHAT A MAN!!!
Its actually really common for subs to rest on the seafloor in shallow waters, the water intake vents are all over the hull, not just the underside.
I have heard that the USS Jimmy Carter is specifically designed to be able to sit on the bottom.
Great boat named after a great man and president!
Many SpecOps subs can.
@@stanleyhornbeck1625
I thought that for a very long time. But, like Paul McCartney, he destroys his legacy every time he opens his mouth now.
Just like its namesake's economic policies.
@@stanleyhornbeck1625 🤣🤣🤣 Well, at least he was better than Biden. Which is not really saying much.
There was a nuclear spy sub that would sit on the bottom. They put helicopter type skids on it but the skids got covered in mud and the sub almost got stuck
So seawater cools the reactor and steam is given off the reactor to power the turbines? New one on me!
Science is hard!!
😉😉😉
Kelsey Grammar bottomed his diesel sub, the ss stingray, in Down Periscope. And Lauren Hutton, his dive officer, drove it between the screws of a freightor. It must be real.
Diesel boats run on batteries when submerged. So long as you gently bottom them out there's no risk of cracking any of the battery cells. That's not to say there's no risk, if those batteries leak and any water hits it, well you've got a toxic gas mess to deal with
Funniest movie ever!
I watched that flick for the first time with my son when I was on my last boat the USS MONTPELIER SSN-765. We were at sea at the time doing a "tiger cruise".
I watched Crimson Tide when I was on the USS ALABAMA SSBN-731 and we were deployed at the time.
Be safe and 😎
😂
The depth of the ocean can change dramatically depending on where you are. Also no sub wants to touch the bottom because of about 37 different reasons. It makes noise, you can damage the subs hull and screw which is bad for a whole other reason. Every ship in the world has reduction gear which is like a massive gear box with gears as small as 5ft in diameter to larger than 20ft on diameter dependent on the ship. Hitting the screw would damage those gears leaving you dead in the water and those gears are one of the most expensive things on a ship as well. There are so many reasons on why not to touch the bottom. Also yes there’s such a thing as crush depth and for the majority of the ocean that would happen before touching the bottom but near shore you’ll find shallow waters. Every ship uses sea water in some capacity so sucking in dirty water isn’t only a bad thing for nuclear subs. To add on to that systems on ships are designed to take some type of dirty or polluted water and if they weren’t that would be a design overlook especially for a billion dollar warship.
not every ship has reduction gears, many have electric motors
[11/22/22] I recall an incident (not sure exactly which sub) where a sub touched bottom, or close to bottom, and during the inspection back at base, the clearance divers found sand, and rocks either in the intake ports, or the bottom of the ballasts.
I was not there and it did not happen!!!!!!!
That's why diesel-electric still has certain advantages. Remember that Swedish sub that sneak behind a U.S aircraft carrier.
So nuke subs are actually steam machines xD
All large naval vessels use steam its just what you use to heat the steam
@@jdrhc63we67 some have huge diesel engines or am I wrong?
Most energy is still made by steam westher heated by nukes, geothermal, coal, oil, natural gas. Etc.
all nuclear reactors are basically just steam machines
Wrong, the seawater valves that cool the secondary coolant water are not located on the bottom of the sub. A series of grated openings near the bottom allow seawater to enter the subs ballast tanks.
Damn , I always thought it was because it don't have wheels.
Think about it. Who'd have thought that steam power is still so usable after all these centuries. Since the day of the steamboat and probably before. Amazing.
All nuclear reactors are nothing more than fission-powered boilers. Giant, very powerful teakettles.
URANIUM! Get some my friends!$$$
Literally *every* thermal power plant - be it coal fired, oil fired, gas fired, nuclear or even solar thermal - uses the heat to produce steam which runs a turbine. But this has a much in common with a steam locomotive as an SR-71 with a WW1 double decker plane.
I work at a coal fired power plant, and our fresh steam is at 602°C and 265bar, with nearly the same weight-to-volume ratio of tap water. That stuff is closer to a blow torch than to the steam from your coffee mug.
@@johnc2438 Just enough to be deemed unlimited horsepower.
Shhhhhh. Don't tell the 21 year old green girl who's gonna tell me how to live my life that. She might have a bad dream or her feelings might get hurt. We definitely need to live in poverty so she can be happy.
Spent about 80% explaining nuclear reactors and just added on the coolant entrances being on the bottom at the end
No thats about right because then someone would wonder why you need to pump seawater into a sub
@@buttwheat for several reasons since the subs submerge, cool the reactors and flood the torpedo tubes with sea water.
@@TotallyNot_PatrickBateman I am aware lol, it's my job to know the middle bit.
@@buttwheat if it was, would you really be outing yourself as a government asset on a UA-cam comment?
@@well_as_an_expert_id_say because who cares? Ooh I can learn quick and didn't fuck up royal growing up, woop dee fuck.
Wrong, cooling is from main coolant pumps transferring heat to the secondary system via steam generators. Emergency cooling does enter the bottom but only used in a emergency loss of main coolant pumps.
So it may be a little too simplified, but seawater auctions are 100% near the bottom of the boat and they are for cooling of steam not emergency cooling
Riley .... correct.
@@K6Jaeger outside of an emergency, clean water is pumped in and out through several ports/valves along the midline of the submarine which can be opened and closed selectively. It's not unheard of parking a nuclear sub on the seabed. It was a pretty common practice for Soviet submarines as well.
@@Puffalupagus360 our submarines cannot park on the seabed, it’s physically not possible, we would clog up our seawater systems, also I don’t know about the Seawolf class or Virginias, but there are no “inlet” systems on the centerline of the boat
Riley said "Boat". Those who know, know!
There’s definitely a way to intake water to cool the reactor in the event of a power failure where they had to sit on bottom of shallower water
There is????
I would hope that they would be smart enough to do that!!!
Why not take the water in from the sides. And leave the option open for a parking bottom!
They do take sea water in through side. It is not directly used to cool reactor.
The boat will suction to the bottom and they will all die. Not this msw crap. Also most boats have valves from more then one side
You can’t have the MSW intakes too far from the bottom or you would risk sucking in air when on the surface, or at periscope depth in rough seas.
It may. After the reactor is slowed down or turned off, it could touch the sea bottom. In an emergency to evade torpedo, it may may to touch down.
in alot of cases if a Sub tried to reach those depths it's hull would IMPLODE long before it ever got there.
Makes sense. Always wondered why they couldn’t bottom the boat like ww2.
Not gonna talk about crush depth?
Considering Virginia class sub can dive deeper than 400m that leaves a LOT of ocean that is 360m or shallower.
That intake for the seawater is called a “sea chest“ and every ship or boat (cuz a sub is a boat, not a ship…) has them. Nuclear or conventional, they all do. The point is that grounding any ship is going to cause the pumps to suck debris into the system. Not good for any saltwater system…from reactor cooling to salt water flushing.
It's bullshit that they didn't design it better than that!!!
@@kirkkirkland7244
No, you want to sea chest on the bottom or very low on the hull, far as practical below the waterline. You do not want it to be sucking air.
USS Halibut and USS Parch “touched bottom” tapping Russian cables…probably USS Jimmy Carter as well!
Great! Presumably this means if a sub sinks to the bottom because of an accident it's reactor is more likely to overheat / cause major problems.
Pretty sure there is heat exchanger between the sea water and radioactive coolant of the reactor, just for simply not being huge ass blimp on enemys detection system, since you know blowing radioactive water along the way? With out separation your submarine thats essentially only defense is not being seen, would scream everyone where its located due leaking radiation.
You're right. There are 2 heating circuits. In the primary circuit, the water pressure is 140-150 atm. this is the reactor circuit. In the second circuit of the steam generator, the water pressure is 17 atm. the second circuit has a heat exchanger with sea water.
Primary coolant isn't radioactive enough to show up, now if you pumped seawater into the reactor you're gunna need a new boat.
@@buttwheat thats not exactly true, Russian have tech that does that
Justin. Correct, the reactor cooling water is very pure and sea water would cause major damage. Steam system water is separated by a heat exchanger from reactor cooling water. And sea water is separated from steam plant water by condenser heat exchangers.
@@J123G although it is possible, there has never been a loss of coolant casualty bad enough to require it.
I chew Trident nuclear gum
They would first either shut down and seal the openings or SCRAM the reactor and emergency shut it down. They're NOT supposed to but they do so if necessary. I have been on two different Submarines that have done this, for surveillance needs.
Sounds dangerous!!!
Keel cools. Most vessels/boats have them if they have an inboard engine. They cannot use a radiator like a car because there isn't any air to be forced into it like a cars grille does
Here I am thinking 🤔 isn't it bad for all Submarines to touch the bottom
Ikr
Depends on whose bottom you are touching.
When you hit it with speed, yes. When you gently park your boat there, no. Sitting on the bottom makes it quite tough for the enemy to locate you with Sonar ect.
Not if its done gently, but if that bottom happens to be 2.000 meters deep then yes. And the same if they try and do it while going at full speed and already at 400+ meters of depth and thus putting the hull under a lot of tension.
It wasn't so bad for WW2 subs to sit on the bottom and a lot of times it saved their lives!!!
Not like the ocean isn't miles deep just about everywhere. And submarines are always called boats, no matter their size.
Having served as a mechanic on 5 nuclear submarines, you don’t want to touch the bottom for many reasons, the least of which is the depth(possibly beyond test depth or worst, crush depth limits), clogging seawater cooling systems, or worst, hitting an undersea mountain.
If this truly was the only reason they cant touch the bottom, seems like someone would have the brilliant idea to put the intakes somewhere else on the hull, like maybe the top or sides, so that a nuclear sub could sit on the bottom completely silent and unnoticed to wait for unsuspecting hostile forces, in the event that wide scale submarine warfare becomes a reality once more.
Omg, I hope these peeps don't get paid for this. Though, most things are not wrong but, they're not correct either. It's ok to be stupid, I guess.
That would mean that if there was a malfunction, and the craft lost control, and sank to the bottom, then the nuclear reactor could overheat and explode!
Clever huh!?
What about the USS Halibut SSN-587? Check out it’s history and design features.
There's an entire wikipedia page called "List of submarine incidents since 2000." The first one listed was an accidental sinking, and it doesn't get much better from there
They actually just declassified the truth of the USS Thresher. They always told us submariners and future submariners still in school that only two nuclear US subs have ever been lost, the scorpion and thresher, both a while ago which were the result of old, long ago corrected faults and now designs are much more redundant as well as the procedures and practices. Also that the two incidents were instantaneous and they imploded killing the crew before they knew what happened.
Well, the scorpion maybe, but the thresher absolutely had sunk still on the continental shelf so it wasn't too deep for its structural integrity, but there were alive sailors onboard as it was powerless on the ocean floor. The USS seawolf was first to the area and they recorded about 26 sonar pings before they started hearing the sound of something striking the hull of the sub from inside as the sub must've lost too much power to operate the sonar. In the end they couldn't get help soon enough and an unknown number of sailors died in the bow of the boat, very likely in complete and total darkness if they didn't have flashlights or something that had power to operate itself. Possibly with water slowly leaking in and filling up their last pocket of safety and/or the oxygen levels running out too. They also had the false hope of knowing that another submarine was out there and was pinging back.
They always told us they died without ever knowing, but in reality at least one, likely more of these submariners died a slow, hopeless, terrifying, agonizing death, one of the worst imaginable that could befall you in the Navy and they just lied to us all for years, it's so messed up and so on brand unfortunately. It's traumatizing just to be faced with that possiblity. A hydraulic oil fire occurred on my sub and it was looking seriously grim at first so having to start legitimately deciding if burning to death or slowly drowning, suffocating, starving in pitch blackness listening to the dead sub creak, grown and moan as you wait knowing billions and billions of gallons of water sit just above you and your tomb is all that keeps it out. I still have serious nightmares and sleep problems from that one time where I thought I was going to die for about 3-4 mins 10 years ago.
A few nuke boats, like USS Seawolf SSN-575, were modified with retracting skids, to sit on the bottom for SpecOps missions.
You are probably meaning SSN 21.
@@SonOfLiberties Nope, not the 21; those skids, plus some hull length, were added to 575 at Mare Island around the early 1970s. Being the voyeurs they were the 575 crew liked to eavesdrop on Soviet undersea cables. And do various and sundry other things with their "Special projects platform".
In absolute extreme cases you can go low but you’d be subject to thorough review to see if you could have done otherwise to reach the same result. You can deliberately or carelessly take action as a caption/pilot or driver that can damage your vehicle
It might have changed, but I kinda doubt it. I served in two nuclear submarines and the sea water is brought in an circulated to condense the steam into water in the secondary system. The steam, before being condensed, is used to power a large turbine with directly turns the subs 7 bladed screw. The reactor operating in a closed system never touches the water in the secondary system. The secondary system water is flashed into steam in the steam generators and then is routed back to the steam turbines. The water in the primary system is circulated through the reactor and never, in any way is permitted outside the reactor compartment. If it was, the engine room would be flooded with high amounts of deadly radiation.
I've designed one submarine that has 8 robotics legs , this one can knee down stand on and walk at the bottom of the sea. And it can do so on dry land as well .
They can and they have. Sea water does not cool the core directly. This might apply to Boomer boats, but not all nuke subs
You are right, sea water cools the second circuit of the steam generator and not the reactor itself
Boomer boats are the same.. and also the inlets are not on the bottom of the boat....
@@generalpatton8903 yes, allU.S. submarines are nuclear powered. Hence, nuclear subs. But not all are boomers. A boomer, or BM, is a submarine with ICBM's as it's main armament. There are also fast attacks and cruise missile submarine, aka gn's. Both of these do not carry nuclear warheads, just torpedoes and cruise missiles for their main armament. . .
@@reedbeggs9442"Set Theory" - 3rd Grade Level
I never want to go in a sub unless it's got Windows to watch the fish
It will be dark
They have lots of windows you have to ask the captain for permission to look out the window during working hours
Ex-RO here,... S/D SSN-571 for the last time in Mare Island. (This comment is written for Nucs.)
Laymen need to read "Blindman's Bluff" to show how this video is 90% wrong.
Binding Energy from release of ~2.5 neutrons (per fission of U-235) produces heat/steam. Not decay!
Have a nice day.
Somebody’s getting court martialed for this.
Hey!!! That's classified information!
Not anymore!
Nuclear subs are basically a steam ship but instead of having a coal or oil fired boiler they have a reactor instead! The reactor does not need to be refueled but once every 10yrs. !
for people wondering why subs would be on the bottom anyway, before nuclear subs,
Diesel subs like in ww2 could sit on the bottom to confuse enemy sonar, the sonar couldn't tell the difference between the sub and the ocean floor.
Every ship can touch the bottom. Even non-submarines. It's just a question of if anyone is still alive after.
Pretty sure that no sub is supposed to touch the seafloor ... Nuclear or diesel.
Soviet typhoon submarines used to lay on the bottom for weeks at a time
@@ronemtae3468 Germans train it also, but there is no reason to do it, it's too dangerous to get stuck or damaged. Just because you can doesn't mean you should.
I guess when it's life or death what you 'should' and 'could' become very different things.....id rather die trying the could than die thinking I should have tried 👀🤣
Well, some of these subs are able to touch the seafloor and could stay for more than 1 years, of course if anyone even cares about them..
It's called bottoming. It is a risky manuver that diesel electric subs use. Primarily to avoid detection.
What about when their at port ? Or going into port I can’t imagine the whole way in has 40 meters of depth
Correct. But I think you mean *they’re.
the reactor has its own coolant loop it uses a liquid to liquid heat exchanger to make steam for the turbine and then the steam goes to another liquid to liquid heat exchanger to dump the heat so the steam and become water and recycled back to the first heat exchanger. the last heat exchanger that is removing the heat from the steam is the final cooling that is using ocean water which need a constant flow of water.
I simplified the hell out of the process
I once saw an amphib touch the bottom. Sucked in some mud or seaweed, clogged the condensor, shut down the turbine, lost generators and kept sinking. Ballast valves were open and the emergency generator didn't kick in on time. They never ballast down at pierside again.
So there's the Achilles heel. On the keel. Gotta be BS cause nobody would be so freaking stupid to build it that way.
Calls a submarine a ship…
>Swipes to next short.
there actually is a small us sub with wheels that can drive on the bottom it's used exclusively for espionage work
RUSSIA: “THANK YOU, COMRADE. WE NOW HAVE THE FINAL PIECE OF THE PUZZLE. BREW-HAHA!”
I just can't believe the navy would accept a sub with intake on bottom cause back in the day subs would sit on bottom an wait for it's pry
Because those submarines were powered by diesel when surfaced and electrical motors when submerged. But that meant they had to be refuelled often, a nuclear powered submarines doesn’t need to be refuelled for 20 years, also, when those submarines were sat on the bottom, they were in water that would have been less than 300 metres deep, any deeper and the sub would have been out of safe depth.
@@lorcan1091 Cool water intake at the bottom and hot water exit at the top 30 metres above bottom intake say whatever enables thermo-siphoning to function pretty well without any pumping.
Sooo no down periscope moment’s for them
You stole my thunder by referencing it first. Bastid!
@@rudolphguarnacci197 🫣lol.
It's a fairly common tactic for Russian diesel electric submarines to rest on the sea floor in coastal waters. It stops them from drifting and allows them to power down all non-critical equipment, allowing them to be as quiet as possible.
It's also common for Russian subs of all types to make themselves just slightly negatively buoyant and rest on the thermal layer of dense ocean water, where they'll let the current carry them along at 3 knots or so. They can then use their passive hull arrays to listen above the layer while their towed arrays are left to hang below the layer, allowing them to listen below it as well.
Now how would you know that???
Surface ships use the same thing with conventional systems and the intakes are called Sea Chests.
Surface ships also cannot touch the bottom more than once.
So that's how to fuck a nuke sub up👌🏼 nice, knowledge is power💪🏼
Haven't you seen all the old nuclear-powered submarines that they have run ashore in Murmansk, they really stand rock solid on land.
They are slowly being dismantled by a German enterprise. Long process which will continue into another generation.
So that explains why diesel electric subs are much better suited for coastal waters...
That’s why conventionally powered subs are still much better because they can lurk or hide in ocean trenches without problem.
I need to have an emergency ballast that causes them to hit bottom on their side.... Or alternative emergency cooling valves that open in other areas only as a last resort....
My brothers the only guy who welds up the stainless steel condensers for all the subs EB puts out. They are 32’x16’ sections of stainless piping. Pretty massive.
Actually its because touching the bottom is how you crash your sub.
That and the fact that crush depth exists.
And scrapes the paint ... a friend told me.
😉😉😉😉
@@manlybaker3098 yeah, that too
they’ll end up like uss thresher and scorpion
so it's actually a steam engine
Close but no cigar. The reactor cooling is a closed loop of demineralised water passing through steam generators once the steam has been used to preform its useful work it is condensed using sea water heat exchangers and fed back into the steam generators via feed pumps
Sea water does not directly contact the reactor cooling system
The NR-1(the smallest US nuke sub) literally has wheels on the bottom to roll around and do salvage/espionage operations on the sea bed….
I'll bet it makes all kinds of noise cruising on the bottom!!!
@@kirkkirkland7244 yeah maybe, don’t need to be too quite doing salvage work and the type of espionage work it did was usually laying sosus sensors in international water, while the USS halibut had skids to sit on bottom and was tied up in hostile water but skids don’t move so I figure it was much more quite .
Could’ve really used that little bit of information before I parked my nuclear sub on the bottom of the sea. Now it’s ruined.
So thanks for that.
Got to love circular arguments
To all the people wondering why any submarine would rest its haul of the sea floor, that used to be a strategy used by germans with their Uboats to avoid sonar detectection. Eventually, this method was scraped as it was too dangerous and had too many risks.
there's a war story of USN SEAL diver whom utmost got caught up in Soviet nuclear submarine cooling system. He was merely seconds away from drowning.
I'm certain the channels between the US Navy's submarine ports and oceans are quite a bit less than 40 meters deep.
Most are much deeper!!!
40 meters? Minimum?.
Dang... so operating South China Seas gonna be a problem. 🤣
On the intake you add the design I was creating with the augurs and robotics scraping arms then you can throw your waist in there and have robotic scraping arms and extruder systems to extrude back out to you in each element at it's boiling point. Yeah before it goes into the components that can't handle the particulate the particular is removed and redistributed.
Not necessarily, some subs have intakes on the sides and bottom, some even have intakes on the top deck, but that's not the main issue if this video. The water coming through the intakes does not come in contact or even flows through the same "system" that the actual reactor core and fuel rods are apart of.
The reactor is in the primary loop with the main coolant pumps, the pressurizer, etc and the water in the "system" that makes up the primary is deionized water, it has to be absolutely pure H2O. The primary side is under pressure allowing it to be superheated so it's still a liquid above it's boiling temperature as it is one of the most important things in the reactor. The water is the number one first safety feature of the reactor as it's directly in contact with the fuel rods and is the main reason the neutrons flying out of the fission reactions give up their energy to the water to beneath the level needed to cause another nuclear fission by colliding with U-235. That's why one the names for the primary side water is the moderator, so "coolant". So ocean water can not and would not be allowed to flow into the reactor as it would deposit all sorts of scaley, briny, cooked organic layers as the ocean water, which would need to be pressurized to a fair level before even making it to that point because if not under pressure, the water would instantly flash and vaporize to steam as it contacted the fuel rods which is called voiding and is a very very very bad thing.
The water does get used by the overall reactor system though, but it is in another completely closed off and separated system of the heat exchanger, port and starboard steam turbine generators. The heat exchanger is a big structure of small tubes that run very close throughout. One set of the tubes is the primary side pressurized superheated deionized water and the other set of tubes is the secondary side of mostly sea water which flows through the tubes which allow aton of the superheated primary water to dump a lot of thermal energy into the secondary water which flashes to steam and vaporizes which then uses the new energy and pressure to drive the steam turbine generators for electricity. The ocean water does so cause scale, brine and other things in ocean that cook at above boiling temperature and depositing a layer of ocean crap that reduces the heat transfer coefficient between the primary and secondary so it has to be cleaned every so often.
So the titke wasn't necessarily true but the explanation was the incorrect part that needed addressing as the ocean water that comes in the intakes does not ever even come close to the reactor core as it's flowing through a completely closed off, separate system than the actual reactor. My source is me, I was in RC div on subs, ET2(SS).
I wish all shorts and TikToks were like this, love the knowledge in the comments
Wow this turned into a real demonstration of what happens when you do not LISTEN and do not READ.