While Dianna is recovering, I'm leaving her videos running 24/7 in the background so her channel gets more views. The algorithm is hungry for this attention, so I feed it to support her.

The fact that submarines can experience 3 atm of pressure difference at such a small tilt is another mindblowing fact I should've been able to figure out if I ever stopped to think about it

I know you’re not doing so well right now, but I hope you get better soon. I truly appreciate all the wonderful information/content you give us. I’m so thankful you exist. Not only do you teach us so many things, but you also make it fun. You kind of remind me of a new age Bill Nye The Science Guy. I appreciate you and I hope you’re doing ok. Lots of love and respect to you 💙💙

As a submariner who has been to the arctic myself I appreciate your video! Now I can show everyone what my experience was like in the arctic! Thank you

Former 688i bubblehead here, thanks for making this video! Joining up was probably not the best decision I made in life but regardless I'm kinda glad I did, seeing people like you and Destin doing these videos gives me a new perspective on something that for me was just a matter of course. To an extent I regret signing up but seeing videos like this from a different viewpoint helps me feel a little prouder of what I did. I cant wait to see what else you have coming up!

Quick thinking with the drone! I used that same trick to film the top of a mountain without hiking up. I landed the drone half way up - which reset the Max height limit and allowed me to keep going higher after the drone started up again. I was nervous. But your situation was much more extreme.

My little girl loves this channel. I hope Dianna recovers and feels the love we all have for her.

Sending healing energy. You will get through this. And we will be so glad to have you back when you do. You've been such an inspiration, especially to other women in STEM.

So this comment will likely be buried, but I am the Captain in the video. Dianna and Levi were awesome guests. I'm enjoying these comments a lot. After 25 years it's all second nature to me, but it is a treat seeing folks learn things for the first time.

Some of you caught the drone at 18:25 was stuck suspiciously close to us. That's true, usually DJI drones can fly miles away from the operator. Here's what happened: The drone was originally paired with Levi's phone. But in the extreme cold, Levi's (older) phone battery died within minutes - an Arctic weather issue we hadn't considered. So we weren't able to use the drone at all. Fortunately, I had downloaded the DJI app on my phone. Unfortunately, we didn't think to log in before leaving Alaska. (There's no wifi on arctic sea ice, it turns out). Flying without logging in meant the drone was limited to 50m horizontal, and 30m vertical. Wah wah. Also, we’re still working on the videos about how the submarine navigates and communicates with the outside world as well as what it was like living on board if y’all have any questions!

Career sub sailor here, 1972 to 1993. qualified onboard 4 different boats, SSBN 633, SSN 696, SS580 and finally SSN 662. I lived sub life from all the angles. This video brought back many memories. You did a heck of a job explaining the boat to lay persons. Thank you for posting this. RMCM/SS USN retired

Poor girl, she hasn't even been able to finish the follow up videos to this. 😥

Very glad to see you publishing again, Dianna. Wishing you a continued and speedy recovery.

Seeing yours and Destin's experience on submarines has been fascinating! I'm a jarhead that only ever got around by air. This was all a giant mystery to me, so it's fun to see it actually documented from a normie's POV.

this is absolutely insane! cool stuff

The fact that human beings can do everything in this video (including making a video in the Arctic with a drone and DSLRs) is absolutely fkn insane.

My dad spent the better part of his life designing life support systems for nuclear submarines. His work was so secret we (his family) didn't actually know what he did for a living until after he retired. And even then, he was pretty vague. He was the best dad ever, and a legit brilliant engineer. And because of his work, and the work of engineers that have come along since, all you guys made it back safe from your dive. He would have enjoyed this video. He passed away several years ago now, but this video reminded me of him. Thank you for that.

My Great Grandpa served as a marina in WWII and my uncle regularly use to tell me stories and proudly show of the ring they all wore. These people are made of something special. Thank you for showing us aboard

I hope you get better soon. you're enjoyment in your videos is so refreshing it always makes me smile. we really need more people like you.

Hey Diana, i did not get this one last year. Its great to have you back, even if its an oldie. I am going to see all uour videos again while you recover. Hope you get better soon. Big hug ❤️❤️❤️❤️

Career Submariner here, 1987-2008, one of the greatest decision of my life was joining the US Navy Submarine Force, and miss it sometimes, thank you for the video, it brings back a lot of memories... And correction to your video at 11:21: the Ballast Tanks are not around the hull of the submarine (that was in the old WW2 submarines), in today's nuclear submarines the Ballast Tanks are at the extreme front, and extreme back of the submarine.

Bro, science is freaking awesome.

That was awesome! We all miss and love you Dianna. Praying 🙏 for your recovery.

❤ All the best wishes and prayers for your recovery Dianna. We miss you and your videos. ❤

Love your work!!! From an old science geek/ military guy. What a cool experience! Thanks for sharing.

this is wonderful to see. I followed Destin's trips on his nuclear sub excursions and just the fact that Diana is doing such amazing trips gives me a feeling that scientists in general are willing to go to these great lengths for the sake of knowledge. you folks are incredible in what you do as are the brave men and women aboard those vessels. supermassive commendation for those people who protect us and go to the literal ends of the earth to do so

Thank you for showing, briefly, my beloved grandson. I as a joy to see him at work.

As a veteran, and specifically a veteran who served in a technical field (Small Computer Systems Specialist and Firewall Operator), I appreciated that you took a moment at the end of the vid to allude to the intelligence, skill,, discipline, and dedication it takes to perform those types of jobs in those challanging environments. Unfortunately a LOT of people still have the misconception that everyone who is in the military is an infantryman. This leads to a stigma when you tell people you are a veteran because all they picture is you with a rifle running into battle. Logistics, administration, and technical fields in the military have some of the best trained and capable workers in their respective fields. Not enough attention is given to them, the caliber of work they perform under incredibly challenging conditions (both physically and psychologically) and the transferable skills they possess when they are trying to transition out of the military and reintegrate into civilian life. I appreciate even this little moment you gave to acknowledge it and hope it will help to destroy this horrible stigma surrounding military service. Thank you.

The noise damping tape is so cool! You should do a video on just that!

Having served on an LA Class and a Sturgeon-class with both having gone through the ice in the artic it was nice to see a non military perspective on both the boat and the ice-x. This portion was well presented and explained for the lay person, well done. I look forward to your future videos especially to see what the military declassified to allow you to show everyone.

these guys are highly skilled inter disciplinary scientists, they all have to understand how every aspect of ship works in case of emergencies

So sorry to hear Dianna is so sick! I will be praying for her recovery! Loved this video! Just watched it for the 1st time.

Props to the cameraman diving behind the Submarine so we can get those awesome rear shots

I served on both a 637 class and a 688 class submarine during the height of the cold war (70's and early 80's). Crossed the Artic Circle but never under the ice. I do remember when we were at periscope depth up north and ran through a temperature inversion and popping to the surface. We had to flood hard to get us back down, but once we got out of the inversion we sank pretty fast and the trim pump could not keep up with the depth change. The Officer of the Deck considered blowing the ballast tanks but changed his mind and ran up a couple of knots of speed instead. Submarine life is 99% boring interrupted by shear terror.

I came across your channel just last night and I was loving it.... Then I got to the part where you became sick and I felt so sad and shed a tear and prayed for you. I wish you a full recovery with all that I am lady. It's heartwarming to see the amazing love and support system you have. You'll be back. Thinking of you all 🙏 x

Absolutely awesome video Miss Cowern. I am Inuit. So a lot of my family live in those treacherous conditions every single day. That is just a part of life. I've never been to the Arctic yet but I would love to go. Mainly to see my people's way of life

Wow! As a retired ship's engineer, living in the largest naval port in the Netherlands, I love this. Great!

Served on a ballistic missile sub tender in the early 80s. It’s great to see someone telling the world about these amazing ships and their crews. Of course, you can’t say too much…

I follow you on twitter. I'm so sorry for your recent LC/MECFS. I hope you can get back to doing this. how cool!

My brother was a nuclear reactor operator for one of the Navy’s subs back in the early 1980s. It felt very strange how a tube full of people could completely disappear from all existence for a while, then pop up and be part of the world again.

Brings back some memories. I have done more than one Ice-X on a submarine. It is indeed serious business. We started doing these in the late 70s and early 80s as the Soviet Union started to use the Arctic more and more as their private lake. This is where they like to hide some of their ballistic missile submarines and wherever you find a Soviet or Russian missile sub you are going to find an American fast attack submarine to make sure it will not be able to launch its deadly payload. The Soviets designed the Typhoon class of ballistic missile submarine specifically to remain motionless under ice thin enough for them to blow their ballast tanks break through the ice and then launch their missiles. That is why it is so big with specific design features to enable them to break through the ice and clear their missile tubes for launch. It was never a "Cold War" for submariners and the war to protect the United States from unimaginable destruction is still ongoing. The silent service never wants publicity or thanks. Just knowing what they do is vital to our survival as a nation has always been enough.

Diana, I don’t mean to be rude but I think I have watched ALLLLLLL of your videos at least a million times, I have listened to every utterance of awe through your voice and then my own as I see what amazed you on my small window into your unique prospective of our world, which fills me with wonder and joy, and that brings me to the request that may seem rude as it will take up your time. I would request that once you’ve kicked this illness and take a minute or two to take a deep breath, or two, and give your husband a big hug from all of us, that once the formalities are sorted will you please, and this is the selfish part, will you please be so kind as to continue taking your film crew/family (I’m certain anyone who is around you becomes like family pretty quickly) everywhere you go so we too can experience the absolute childlike wonder at everything that encourages and enables the wisdom that you exude in quite, again I apologize, quite an annoying amount for someone so damn young. I apologize, it’s just that we miss you,… and cannot wait to see you up and running like usual. Be safe, we love you both! Your fans.

the GPS correlating with the ice movement answers all of my questions i've had. amazing video! THANK YOU!

When the drone landed on the other side of the ice, the footage was absolutely indescribable! What an event! The entire thing, the drone getting to the other side, moving away, landing and returning, all of it, was just great! You just had to recover the drone, otherwise this once in a lifetime footage would have perished in ice, and you did.

I find the fact that you used a Russian submarine silhouette at 5:38 pretty funny. Great video over all. Welcome to the 1% of 1% who sleep under the waves. Also a bit of a correction. The ballast tanks do not run the entire length of the submarine. They are only on the bow and aft ends of the boat. The sonar sphere extends past the forward main ballast tanks to allow clear sound transmission though. The main ballast tanks typically do not go far past the start of the pressure hull (the people tank). At 11:36 you can see about where they are from where the decks straighten out along the outer hull.

Diana I hope you recover soon, this is the best i can do for now. you have always been enthusiastic about science, we all are praying that you recover soon. you have the strength to fight, thankyou for that husband who is being there for you by your side. see you soon. you just cant give up

Diana has provided wonderment and so many smiles. Fingers crossed for her soon recovery.

So excited you’re back. What an adventure!!!

It's good to see you again, Dianna! Awesome video, honestly you could feel the tension!

Fantastic video. Peak content and a real joy. Sometimes you sit down to watch a video from an awesome channel and then experience the pleasure of discovering it is randomly extra awesome. Can't wait to watch the 2nd part.

Still looking forward to the sub videos. Maybe one day

I'm really glad to see you've posted something new; I was beginning to think you weren't coming back. Thank you for continuing to be awesome.

Great video, always a treat to see these usually secret events happening. And congratulations on maybe the coolest sponsors I've seen on UKposts!

This is an awesome video. I hope you recover soon and can get back to enjoying life and hopefully sharing your experiences with the world.

Get well soon Diana 🙏

Wow!!! What a series of polar experiences you recently had!!!! Cherish and please do continue to share your thoughts about these fortunate adventures you are having!!!

I was so emotionally invested in you getting that drone back, even though I knew you had to have gotten it back, since we saw the footage from the drone. Great storytelling!

That was an amazing adventure! 😮 Too many people lack the experience of being in situations where a single mistake or hesitation to obey a command can cost their, or others' lives. I think it's an important experience to form personality and responsibility.

I am praying for you to get well. Stay strong❤

Interesting to see another science tuber doing a deep dive into subs with the US Navy. Quite intrigued to see how each of your experiences are similar and different from each other's. Also curious to see if you come to similar conclusions about the experience.

Great video. It brought back memories as I served on the Pasadena for 3 years in the early 90's.

I hope you're doing better than I saw in the last update I saw. You deserve better than that and ALL the help and good wishes coming in.

Thank you Physics Girl!! Really enjoyed this. Thank you for your service submarine crew !!!

Thanks for another great episode Dianna! I was a surface Navy guy, not a chance I'd voluntarily get on a boat that sinks...even crazier than those guys that jump out of perfectly good aircraft.

It’s so cool that you experienced those issues with the drone! Science and Physics are obviously all about failing fast, iteration, and solutions, and you don’t learn through things going just as planned, which sums up, as you and the Captain himself stated, the entire point of conducting excercises in the first place 😊

Excellent video! Thank you for sharing. I was a submariner for 26 years and spent a lot of time under ice and did an ICEX back in 2009; one of the greatest memories I have is standing on the North Pole where we spent the night.

I honestly miss school and learning new stuff all the time.

Okay, this was wonderfully fascinating, esp. the part about quickly-changing seawater densities.

So glad to see you healthy and creating. Love to you and yours Diana.

I bet this video depicts the difficulty, dangers, and challenges of the deep a lot better than Stockton Rush did with his OceanGate submersible.

You have to have the upmost respect for these guys. Especially the Commanding Officer. They are literally the best of the best. And that includes the fighter jocks that get all the publicity. What an incredible experience for you Dianna!

Great work on this deep dive (of your deep dive), Di! Awesome that, even in the Arctic, GPS is accurate enough to detect ice sheet movement within an hour. Can't imagine how bizzare a 14-degree tilt was surrounded by water colder than the Titanic sank in, but seems you had a *ball as t*-ypical and rolled with it! Would be interesting to see that sub crew sit down with some astronauts to compare their experiences, since a submarine is kind of the opposite of a space station.

One more amazing vid in a row! You never fail to amaze me

With a moving home position you can set the home position of the drone to the radio controller (operator) and not the GPS position of take off. Rookie mistake.

As a formal bubblehead serving years onboard these amazing vessels (688 and 726 class) , you did an amazing job documenting this video! Well done!! I'm subscribed now. :)

WOW what an amazing Video Diana. You're such an inspiration :) Thank you for all your amazing content

Pretty cool to finally see the video that I had heard about. I was on the USS Illinois which was the other submarine that participated in ICEX 2022 alongside USS Pasadena. It was definitely a once in a lifetime experience. Can't wait to see the rest of the footage you guys got!

Great video and having taken Physics in HS & college, I never would have guessed what a challenge diving would be. Great stuff!!!

Fair play. This trip would have been amazing and fantastically interesting, but also incredibly scary. You did very well.

What an experience! I love how the effects team uses a Soviet Akula-class submarine silhouette for some of the demonstration animations, hahaha!

My dad was a Nuke electrician on subs and during dependents cruises they taught us kids how to slide on pillow cases during angles and dangles.

Your description of main ballast tanks being full length of the vessel is describing WWII era subs with twin hulls. All US subs are single hulled and what you see for the inner skin IS the outer skin too, except at the bow and stern where you get a hemispherical inside skin and then THAT is where the fwd and aft main ballast tanks are. They have free flood grates at the bottom and the vent valves at the top. Great episode! I'm a US submarine veteran and always enjoy seeing the reaction of civilians when they get a chance to see how Submariners live.

So many people cheering for you! Hope to see you back soon. ❤

This is so cool! I’ve been on the sub they have in CT and that was interesting but what you shared with us is so crazy! Not just being on a working sub - but one in such an extreme environment! I hope you are doing better and am waiting to see you back again soon.

4:20 28° is pretty hot ! It is the average temperature of the Mediterranean sea in august in Tel Aviv...

Feel your pain about (almost) losing your footage in the harsh environment. CNN, Nat Geo and I went in the drink (briefly) during SCICEX '99 (USS HAWKBILL). Each lost a little gear, but the number of surfacings equalled the number of submergings so it was a good day. Thanks for sharing your experience -- love your videos.

Incredibly informative and entertaining. I didn’t realise how complicated the whole process of diving under the ice was!

Hey, finally had a chance to watch this episode. Seriously almost as exciting as feature length film! Loved it!!!

Wow - this was so insightful and what a great edit, putting the story together. Thank you for taking us long, in one of the most amazing experiences, any human on this planet can have! You are very fortunate to have had this experience! thank you, thank you !!

Just a minor correction for you. The main ballast tanks don't run the entire length of the ship, they are only in the forward and aft part of the ship. Also, variable ballast is not pushed around the ship using compressed air. A large pump moves water from tank to tank and tank to sea in the variable ballast system. Compressed air is used to rapidly push water out of the main ballast tanks during emergency situations to get the boat to the surface quickly. During a regular surfacing operation, air is blown into the main ballast tanks using a blower.

Such an amazing back log of videos to watch repeatedly. Miss you dianna. Still here to watch and support.

Thank you for an awesome video on the workings of a nuclear submarine. I know that you are not in the best of health right now and I wish you the speediest of recoveries. I am so looking forward to more of your interesting and informative videos.

You surprise me all the time at how you can get physics into everyday (and almost everyday) life.; Thank you so much!

I was on ICEX 2011 with USS Connecticut (SSN-22) and USS New Hampshire, and it was such a trip all the time. Ice camps, gps, light, etc. All a new experiences, and any mistake almost lethal. Hope you enjoyed the boat coffee and food.

This was my first Physics Girl video. Outstanding video, well done!

Just saw this on my Tv. This has to be my favorite submarine video! I was on a submarine during the Vietnam war. So long ago, you would think many things had changed, and they have but many things have not. You cute slant in that was so fun. I throughly enjoyed your video.

It amazes me that in the times we live in, it's still a really complicated manual procedure to do things like this. You'd think with modern tech you could just tell the software what you want the sub to do, and the computer takes care of it all.

13 year Navy Submarine veteran here, outstanding video! Definitely brought back memories of being on the boat! Glad you got your drone back!

Hats off to the men and women in service around the world! I never knew about the nuanced role that buoyancy plays in submarining, so that was very cool. It truly is great to see you again, Dianna!

Thank you for this. I served on this submarine and was in fact on the original crew (known as plank owners).