Why Don't US Submarines TIP Over in MONSTER WAVES?
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- Опубліковано 5 чер 2024
- Submarines, with their streamlined, rounded shape, packed with crew, equipment, and gear, move effortlessly through the waters without tipping over. While sailboats are tossed around by the waves, submarines seem to glide undisturbed, as if the chaos on the surface leaves them completely unaffected. They cover vast distances, seemingly unaffected by what happens above them. But how do these technological marvels maintain their stability in the water? Why don't they tip over, even in the most turbulent conditions? #submarine #usnavy #roughseas
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US Subs are NOT double hulled. And they are affected by weather above depending on their depth. And they certainly "rock and roll" on the surface.
Yes they are double hulled. Why would you say something so ignorant.
@@fivestartka1 Try again....the US does NOT have double hulled nuclear submarines. And ALL our combat submarines are nuclear powered.
Ballest...
USS DIXON AS-37 79-81
Diego Garcia 81 tending Submarines and Surface warcrafraft during the Iranian hostage issue.
82 onboard the USS FORRESTAL CV-59 Mediterranean/Indian Ocean deployment
Average loss of life per six month deployment on carriers was five souls.
82-Med/IO We lost seven souls.
Until Valhalla Brother's
We have the watch.
@Navy Productions Thank you! 👍🏼
To get back to the subject ‘happiness is 500 feet in a force 10’
As long as you have wires and Bouy.
@@zed332l ????
"These machines are amazing! Such incredible engineering feats!"
There are two type of Tanks aboard a Submarine: Ballast and Trim. The MBTs (Main Ballast Tanks are located in the superstructure between pressure hull or people tank) and the outer skin that forms the hydrodynamic shape of the Submarine. The MBT are grouped forward and aft. There are valves located at the top of the MBTs called MBT Vent Valves. They are opened to allow air to escape the MBTs whilst water is filling the Tanks from the open bottom of the Tanks when the Boat dives. Once the air has been expelled the MBT Vent Valves are closed in readiness to surface when needed. Trim tanks are located forward & aft and throughout the Boat to adjust the level the Boat and to either increase or decrease the buoyancy to allow for neutral buoyancy or hover at a certain depth. When the Boat is ready to surface air is released into the MBTs from compressed bottles of air located in the MBTs which forces the water out the bottom of the open MBTs lightening the Boat, thus bringing the it to the surface. There are grates at the MBT opening that prevent sea life and debris from entering the MBTs. That is how a Submarine dives, surfaces, maintains level, and can operate ate certain depths without sinking to the bottom.
Oh they do roll, rolled 50 degrees either side once. That's when we found we weren't as secured for sea as we thought we were. Several shots of a guy checking the H2 and CO burner. min 4.35 + 7.30
I have seen 37 degrees...For weeks!!!!!!
99% of the time subs are underwater so surface conditions are not an issue, HOWEVER… I was on the Uss Georgia when there was a rare condition where we had to stay on the surface during a hurricane (a small one thankfully) and trust me… we were taking rolls like it was going out of style. Unfortunately I did not get seasick and because most submariners are not used to rough weather and do! I and a couple of others stood almost continuous watches for a couple of days while everyone else was sick in their racks! I was a sonarman btw, so watching standing in a hurricane on the surface does not require any actual effort!
Years before USS Georgia was built I was a sonar tech in the Coast Guard. I went to Fleet Sonar School in Key West Florida.
@@tomtrenter3208 I went to the ASW (mini) base in San Diego in the early 80s. Loved that base! With only sonarman it was less navy especially important as it was across the highway from RTC/NTC San Diego. RIP the the last two bases but the ASW base is still there!
Awesome engineering!
On the question of depth control at depth, I would say yes as you need moe air being pumped into the balast tanks at deeper depths simply because of the pressure of the water. For example, , ships at 100 meters are at 10.4 atmospheres of pressure while ships at 200 meters at at 20.8 atmospheres of pressure.
Ballast tanks are either blown completely dry to surface or they are flooded completely when they are submerged. To adjust buoyancy they can take on water or blow some out of the trim tanks.
chicken switches?
I read on older diesel powered units they mixed water & diesel fuel in the same tank???
Cool post!
Short answer, they don’t tip over because their center of gravity is below their center of buoyancy, so there is no heel high enough where they would « tip over », unlike surface ships which have their center of gravity above the center of buoyancy.
Try retractable fins at predetermined space measures made to protrude at such turbulent times .
I have always been interested in submarines.
Nice
How do sub moves in the icy environment?
What would happen if s submerged sub at cruse depth encountered a tsunami, like the one that hit Japan?
UP OR DOWN figure it out up you're on the roof Bad but best down no worries it's over for all....
Submarines passengers how determine the cloths to wear? Summer or Winter cloth?
My Destroyer did Sub Guard as the sub could run simulated disaster drills and emergency surfacing, angles and dangles I believe they called them. It was an amazing sight to see a submarine emergency blasting out of the sea at an extreme angle and speed then crash back into the water. Not unlike a whale playing around.
Yes it's called Also to test depth control......Angles and Dangles without Broaching the surface. Coming out of the water ,...That is called Emergency Blow. come out back down and up again (Hopefully).
Whence comes the air to fill the flooded ballast tanks ? A few cylinders of compressed air which are slowly and loudly filled at the vulnerable stay at the surface after each individual diving?
yes.
Remember nuclear plants make oxygen too don't they
Who said it had to be oxygen..?
Submarines are driven to near the surface with propulsion and a low pressure blower is used to evacuate the Ballast Tanks. Compressed air is used in emergency situations.
My guess as the sub returns to the surface less pressure, the faster it moves to the surface, putting extra pressure in a balloon
So how might the exterior surface of a sub survive a direct hit compared to say an Iowa-class battleship being struck by the same weapon?
poorly, the idea is that the outer hull or superstructure is giving the hydrodynamic shape. It is only two inches thick.!
Can subs sea underwater using visual?Just in case if you're they are sailing between mountain ranges
No. Only sonar
Wonderful video!!!
A fair amount of lack of ressearch here. Lets hope he doesn't command a submarine.
An answer to the question posed in the video's 1st half, does an increase in sea water pressure affect the sub's buoyancy? The answer is Yes. How? An increase in depth is the increase in sea water pressure around the submarine. This compresses the submarine a small amount, making it smaller, therefore heavier. The Ballast Control Panel operator a.k.a. the Chief of the Watch will monitor tank levels and follow orders from the Diving Officer to take in or pump out sea water in the Trim tanks to adjust for the submarines neutral buoyancy, also taking into account the temperature and salinity of the sea water which also has effects on the trim of the submarine.
Two points: Compressing the submarine does not make it heavier, it might make it denser of smaller in volume but not heaver because the mass remains the same. Secondly, the voice in the video says taking on water makes the sub heavier. This is wrong. Filling the ballast tanks makes the sub less buoyant, as you state but not heavier because water has no weight when it is underwater. To dive, they let the air vent and that decreases buoyancy.
@@pforce9water has mass below water. Assuming the tempurature and salinity is the same it will have the same density.
Normally when you dive quickly the ballast water will be warmer than ocean water.
This effect is short lived and minor.
Also as the sub compresses it becomes less bouyant. This is also minor because of how little the sub compresses and how slowly it occurs.
While the bouyancy changes it is so minor that the COB (or other watch stander) doesn't have to account for it.
@@pforce9Taking on seawater ALWAYS increases weight compared to air. The error in your post is that you ate assumine seawater replaces seawater instead of compressed air. Seawater is much much denser (and heavier than compressed air (or even un-compressed air on the surface).
More seawater increases weight, causing the sub to be less bouyant. If this weight increases uncontrolled the sub will sink past crush depth at which point the sub losses all bouyancy until pieces finally land on the bottom.
Unfortunately this is a one way trip that many vessels have experienced.
A surface ship that takes on seawater also increases weight until it loses positive bouyancy. Although a surface ship also has a crush depth it isn't as important as a sub's crush depth.
A surface ship that loses positive bouyancy will make an one way trip to the bottom. A sub that loses positive bouyancy control has time to correct the problem until crush depth.
@@Slackware1995 Yes the sub will become less buoyant as it descends but it does not weigh less. As for the sub, when the sub blows it air, the air vents out from the top of the tanks so the water is always being supported by the surrounding water . As an example, the fuel tanks are open at the bottom so the fuel effectively weighs nothing as it is being supported by the water.
@@Slackware1995 My understanding is that since the vents are on the top of the tanks a sub does not take on sea water. "It vents air".
5:12 Nice GTA Online submarine cutscene...
In WW II, subs were faster on the surface. Now subs are faster submerged.
Could someone explain the Chinese sub that sank uncontrollably because of a change in water density finally crashing? What is the difference between Chinese subs and American subs?
The difference is that US Subs are trained for whatever they need to accomplish, Chinese subs are trained to sink one thing and then get sunk by another thing
Some cars have them too
slow is smooth smooth is fast.
is it because they are too big to get close enough to the depicted surf ? be it beach or reef.
God protect u USA forces armées ❤
I would say “NO” because of all the weight of motors etc kept at the bottom of the sub. Also a subs frame work out side begins to start crushing when they start diving past their safety maximum depth. The pressure of the ocean is just much too much for the submarine and unfortunately it’s destroyed and the crew perish instantly. A good video example of this is to watch is a movie called
“Down Periscope“, and although it’s a comedy movie it does show and tell if the sub is starting crush using a piece of sting. If you watch the movie, listen to what a guy called Howard or Howie says about the piece of string, I pissed myself laughing.
That scene is very much at the start of the movie, I would say about 20 to 30 minutes from the start of it. It’s the first dive of the submarine scene. I suppose there has never been any actual footage or caught on video of this as the Navy would have to be prepared to loose a sub and its crew. Hey guys keep those Navy document videos coming as they are so interesting, educational and how each sailor performs a special or series of tasks to keep these ships going and to defend their country.
That’s to all sailors and all Navies, they are brave men and women that sometimes sacrifice their lives for our freedom. Please think about other countries Navy, whether they are allies or the enemy to us. Deep done they are brothers and sisters doing the same job. It is the leaders of countries like presidents, prime ministers, kings etc that start wars I suppose for power, religion or own the world. It’s like the song, everybody wants to own the world.
Because its underwater.
can submarines intentionally do barrel rolls?
NO!!!!
Immelmans.
Angles n Dangals SOP for shakedown. Find out what wasn't secured ....
Yes they could do a single barrel roll. It would require the correct sea conditions and making a huge mistake.
The outcome would "not be good".
intentionlly? no. accidentally? maybe, the right kind of wave hitting them from the side might turn them upside down but then they would just keep rolling the right way up again.
Does the submarine store the compress air to force the water out ? Underwater there is no air
Submarines have large banks of high pressure air bottles that are filled while they are on the surface.
They are filled inport prior to getting underway. The EMBT blow banks are seperate from the service air banks. We use air all the time. Pneumatic air and hydraulic valves are in many systems and get cycled often during the day. We have 4500# air compressors that fill all of these air banks. We run them both submerged and surfaced. If the volume of air in the boat gets into a vacumn, then we have to go to PD and take in outside air until the ships atmosphere is back into a positive pressure. Easy peasy.
Its called ballast
They don't tip over because the center of buoyancy is above the center of gravity. Duh
Imagine if a submerged sub lost the compressed air used to evacuate the ballast tanks. Might get difficult to get back to surface, right?
submarines have multiple large high pressure air tanks to manage the ballast. They are replenshed with high pressure air compressors.
Nuclear submarines can power there way to the surface if necessary,
@@fkchci681 Thanks. I was wondering about that!
@@fkchci681Unfortunately there are several nuclear submarines that have proven your statement to be wrong. There is a good reason that the US Navy spends so much money on an emergency blow system.
Even if you design a nuclear sub with enough propulsion power to surface the boat from test depth, you can't guarenty that during an emergency (ie. Seawater leak) that that amount of propulsion is enough and/or that the propulsion system will be able to provide rated power or even any power.
A few possible issues:
1. The reactor has shutdown (emergency scram)
2. One (or both) primary feed pumps are offline
3. Not enough electric power to run the primary pumps in fast.
4. Main feed pumps offline or unable to run in fast.
5. A Steam Generator offline due to a steam leak and/or feed leak.
6. Main turbine failure
7. One or both electric turbine generator failure.
8. Main reduction gear failure
9. Shaft bearing failure
10. Shaft seal failure.
11. Lube oil system failure
12. Seawater, fresh water, and/or steam leak on one or both main electric panels.
Those are just the causilties off the top of my head that are likely to occur in conjunction with an emergency requiring surfacing the boat where you would be prevented from surfacing the boat purely with propulsion power.
A good example is the USS Thresher which sank during trials being conducted below a rescue ship.
@@televishenimoniker5546He was mistaken.
Joining
Judging by the thumbnail... because they're not dumb enough to take them intoTeahupo'o break? Just a wild guess from a non-submariner.
❤❤❤ Hare Krišna 🍀🍂🧡🎉🦚🪷💥
semoga sehat bersama keluarga
Generally speaking a submarine IS LIKELY to be under the water!!!!
"Sub" means 'under '......
"Marine" generally refers to 'water'.....
Therefore when you put the two together you get "UNDER WATER"......
They probably have gyroscopes
how submarines see under water?
I spent MANY Christmas' in the North Atlantic in the winter 30 degree PLUS rolls at XXX feet could not cook, can Hams .....no we do not have double hulls the outer are tanks and NOT PART of the hull. The people tank is singular.... No never seen one going down or coming up .... been on many.......STS (SS)...
As long as the doors are shut who cares
"heavy equipment and wide tanks..." Nope. They are called ballast tanks, not wide tanks. "pressure hull and outer hull..." Nope. Pressure hull and superstructure. This guy doesn't know the names of the components and I gave up at 1:34 because - damn.
Actually our Subs are shaped more like Tuna, one of the fastest most efficient shapes in the world's Oceans.....
Beautiful
You have no idea about submarine aerodynamics. A sub can't surface more than a 1/4 of its hull or else it isn't stable even in calm waters. Under water sub suffers from the waves above unless in very deep water below 200 meters. American sub are single hull not double hull.
Why don’t submarines roll in surfable waves? Because they are never at the surface in such waves, that’s why…
It’s not sub-mare-aners. It’s sub-mar-eeners. Get it right please. Navy productions, please.
Nah matahari pagi di 8 cm pakai kapal selam ini yang paling pass diperkirakan kapal selam naik diatas permukaan air laut di dinding langit pas di 8 cm ini karena di langit itu cuman di kepingan wilayah bumi itu saja selebihnya cuman laug kau cari langit kau tidak dapat dinding langit kau kesana langit kesana terus tidak ada habisnya bisa ??, pakai appolo juga sama semakin kau mendaki dengan apoko masih ada lagi langit kau tidak akan dapat langit pada matahari , 2024 🙏🙏🙏🙏🙏🙏🙏🙏🙏
Belly rolls wouldn't be possible.
danger。 forever。 abnormal
HAHAHA
US submarines are not double hulled, Russian subs are.
Actually US Submarines do have two hulls. The superstructure hull (outside) and the pressure hulll (inside).
@@Draconis1correct. Russian subs have double pressure hulls.
@Slackware1995 And why they can have windows, not an option for US subs.
@@junanougues which military submarines have windows?
@@Slackware1995 Google it. The windows are located in a pressurized compartment of the submarine's conning tower, so the pressure on both sides is equalized and there is no risk of the window cracking
The keel is the center of balance.
Submarines do not have keels for their hull is round. The various trim tanks throughout the ship provides the balance, among other things.
The keel is not the center of balance.
@@Draconis1subs have keels
Never seen subs surface/dive, they are not to be seen, isn't that right !!?? unless at the docking area.
Another cringe worthy video.
The use of stability many times without defining the term. 90+% of the video discusses pitch stability and still manages it get that wrong.
The cringe comes from most people assume roll stability. While the video is correct that heavy equipment and tanks TEND to be placed low in the boat that only help with roll stability.
Compared to most ships (targest) a submarine has horrible roll stability because of it's rounded hull. Many amphibious ships (ie. LST, LSD) have flat bottom hulls which also are horrible for roll stability.
As a side note, submarines are boats and surface combatants are either ships or targets.
Why can't youtube chamnels bother actually asking subject matter experts prior to producing garbage like this?
2 experiences related to roll stability:
1. We did a high speed run (aka flank speed) in order to participate in a surface combatant excecsise. We were the designated submarine for them to attempt ASW (another story).
We traversed relstively shallow (about 100 feet but I don't know why as deeper would have minimized cavitation). It was a lovely trip as my bunk was oriented fore-aft not port-starboard.
For several days we had a nice roll of about 3-5 degrees making for a nice, steady rocking motion laying in my bunk. Think of a baby being gently rocked in their cradle.
This roll was not due to surface sells because it was constant for several dsys and as soon as we slowed down it went away. It was caused from instability.
2. A crew member needed to be medivac'd. We needed to get close enough to a Coast Guard base in order for a helicopter to have the range plus safety buffer to do the medivac.
As we neared the surface the boat started rolling. By the time we surfaced the rolls were 20+ degrees. We made best safe speed on the surface. The swells were 4-6 feet, in other worfs a nice calm Gulf of Alaska trip.
The round trip on the surface was shy of 4 wonderful dsys. Unlike the vaste majority of the crew I usually only get seasick if the vessel isn't making headway.
This created 4 wonderful days were most drills were suspended as most of the crew was either in their bunks or the head when off duty.
Chow lines didn't exist and the boat had this awesomely eerie replacement of human voice with moaning.
The one time I came close to getting seasick was my own fault. The first time i hsd to stand watch during this time I was bored and started watching the bildge water go up on side of the inner hull, then come back down and go up the other side.The rolls were probaly at least 30 degrees at this point as the high point of the bilge water was higher than the deck above by a few feet.
After several minutes i suddenly felt a bit green an queasy. I forced myself to stop watching my new entertainment and withing a few minutes felt normal.
Even a WW2 LST doesn't roll that severely. 4-6 foot swells is considered calm on the open ocean.
3. Angles and dangles is a special "evolution" to test the boat. It is rarely done.
It is were the boat undergoes steep dives followed by steep surfacing (and occassionally broaching which is how the pictures/videos showing a sub leaping out of the water like a whale made).
These evolutions prove this videos claim that submarines are always stable (pitch) to be false. The pitch during the dive and surface (even if the boat doesn;t actually surface) can reach 40+ degrees.
Extra crew is assigned specifically looking for problems like tools, books/manuals, equipment, and supplies not properly secured. Often tools left behind from off-boat maintanance crews are discovered (I heard stories of how those crews would occassionally forget tools inside tanks which couldn't be safely removed underway and could cause damage and noise).
What doesn't want to be discovered is leaks, especially seawater and even worse a seawater leak between the hull and first valve (all seawater openings are required to have at least 2 shutoff valves in case the first one leaks).
Angles and dangles are fun, but they are also an extremely important boat certification.
Before a submarine is in a position were it needs to quickly dive (evade being spotted or torpedo evasion) it is best to know before hand that doing so won't lead to a major seawater leak preventing the ability to surface.
Likewise it is important to know that an emergency surface will not also cause damage that could prevent surfacing.
Quickly changing depth means quickly changing seawater pressure on the hull. The deeper you go quickly increases the pressures. As you dive deeper the submarines hull will noticably contract until you pass "crush depth" which is literally the depth that the hull will crush.
As the depth increases the chance of a seawater (and possibly other systems) leak increase. This would be BAD as the deeper the sub is the closer to crush depth and farther from the surface. A seawater leak can quickly negatively affect bouyancy (its like allowing a ballast tank to fill,except uncontrolled).
When surfacing from deep depth, especially a quick surface the outside pressure now quickly lowers and the hull will un-compress. Many people don't think of the dangers of this.
If you have ever taken a thin sheet of metal (or even a piece of paper) and bent it back and forth you will eventually reach a point were the sheet fails.
This same process hapens on subs, bridges and other structures that are compressed and un-compressed. This is called fatigue stress.
A sub undergoes a huge amount of testing to minimize the risks. Special metal alloys have been designed to minimize fatigue stress (along with a list of other design criteria).
All it takes is a microscopic flaw in the hull, the, pipe, the valve, and/or welds that isn't caught. Maybe the dedign requirements assune a certain amount of fatigue stress for 30, 40, 50 years, but one microscopic flaw fails after just a few years or even during the first compression de-compression cycle. Suddenly you can have a seawater leak while surfacing.
A microscopic seawater leak at deep depth can quickly erode surrounding metal causing the leak to expand.
Please stop using Photoshop.
Hydrodynamic haul