Japan's Submersible Aircraft Carrier, the I-400 | Cursed by Design

[@ConeOfArc]

Thanks to World of Warships for sponsoring this video, play FREE now: here it is: wo.ws/39aGoUq use code BOOM for 200 doubloons, 2 ships (St. Louis and Premium Ship Emden), 20x Restless Fire Camouflage, 2.5 million credits and 7 Days of Premium!

[@hanif_indo]

Hello, i like your youtube content coneofarc

[@picklr3893]

Pog champion

[@IansMentalOmega]

I never knew of the I400 subs before my first introduction to Aircraft Carrier Subs. My first knowledge of the concept came courtesy of the game Supreme Commander 2 and the Atlantis Aircraft Carrier Submarine. Although, the Atlantis was much, much bigger, like all things in the game. Pretty sure it actually dwarfs some cities in size or at least a large town.

[@katyusha1283]

@Noah Arvino They are all different. Last time I played WoWs console, it didn't have german ships, like come on.

[@ibbi32]

you should make a video on sms emden/the german east asia squadron

[@Submersiblehistory]

Dear Cone of Arc, More boaty boats please. Love, Everyone

[@ConeOfArc]

Depends how the video does. My primary focus will always be tanks though.

[@Aerospace_Gaming]

@@ConeOfArc you could do one on HMS Illustrious, In one of her earlier configurations, she mounted an 18in gun. The largest on any aircraft carrier Edit: It was HMS Furious, not HMS Illustrious

[@ghostarmy1106]

@@Aerospace_Gaming hold up, are you Sure you are talking about the 1940 carrier and not the 1898 battleship?

[@Aerospace_Gaming]

@@ghostarmy1106 whoops, wrong ship. It was HMS Furious

[@davidhollenshead4892]

@@ConeOfArc Uh, the real reason for using the Atom Bomb on Imperial Japan was that OSS knew that at least one of the I-400 was on a mission, which would have involved dropping flea carrying bombs on San Diego, San Fransisco & if possible Portland. Bubonic Plague was a "new use" for the I-400s at the end of the war. This attack would have occurred less than a month after the bombing of Nagasaki, due to the limited speed of the I-400... So now you know why the US Navy sank the subs so quickly, as they found live deceased rats in cages and the flea bombs, which had coils of metal containing fleas around a weak explosive, as Unit 731 found that at least half the fleas would survive the explosive freeing them from pieces of the coils. The Scientists & Physicians of Unit 731 were repatriated after extensive questioning. They should have been repatriated without their heads, as what they did in Occupied China was so vile it even freaked out members of the Third Reich...

[@Kalashnikov413]

imagine spending most of your time in the war be trained and operating this submarine just at the end coming back home in the very first mission with all of those shames when you heard that Japan had already lost the war

[@greycatturtle7132]

Yea

[@User-iq4rw]

Imagine surviving ww2

[@greycatturtle7132]

@@User-iq4rw so you feel like a real winner

[@davidhollenshead4892]

Imagine knowing that your only mission, "Operation Cherry Blossoms at Night" would have killed at least a quart of the people on North America's West Coast, if not a quarter of the World Population. Every Nation would be seeking that I-400 Submarine to slowly kill the crew in the most inhumane way possible, probably by letting their Bubonic Plague Carrying Rats loose inside with the crew, and then welding all the hatches shut... Then the Allies would have destroyed Imperial Japan leaving their home islands uninhabitable and let loose all kinds of pathogens including Unit 731's "products". Imagine once the bubonic plague reached the CCCP, as the Soviets would have been the last of the Allied Powers that were infected, giving them time to prepare something very nasty, such as "improving" Unit 731's "products" before using them...

[@gibsondeis]

@@davidhollenshead4892 idk if i want to imagine that

[@wertsdsf1162]

I'd love to see more ships in Cursed by Design!

[@Lord_Foxy13]

Like HMS Capitan

[@BMD7-OLD]

Like SMS Szent István

[@loganmarriott514]

Hms furious, original configuration

[@halflifeapc8777]

This is a Submarine though

[@GrumpyIan]

@Samson Themighty Can't forget USS Porter.

[@Dejaelvicio507]

next: the plane that carries submarines

[@bigjuicypotato1482]

And that submarine can carry a plane

[@kzytproduction3931]

@@bigjuicypotato1482 i sense ace combat vibe

[@bigjuicypotato1482]

@Dark Shade015 and the aircraft holding submarines can also hold heavy cruisers

[@fjhatsu]

Plane carrying a submarine is just an overly large torpedo bomber

[@kilmentvoroshilov2]

actually that would just be a torpedo, other known as Japanese submarine

[@Slender_Man_186]

“Aircraft carrier submarine” The entire Ace Combat community: “hmm?”

[@8eewee]

Crisp white sheets anyone?

[@Simekos]

*Underwater Latin Chant*

[@Slender_Man_186]

“Salvation...”

[@TheDarthWTF]

PICTURE IT! ONE MILLION LIVES

[@kjj26k]

*Electric guitar intensifies*

[@cherryrunner7205]

Next video I would maybe recommend doing about the French Submarine Surcouf. It is by far the most unique sub I have seen, that is because this sub had a twin gun turret armed with 203mm (8-inch) guns. The same caliber as that of most French heavy cruisers.

[@fernandomarques5166]

The Royal Navy had a class armed with a single BL 12in/45cal gun

[@cedjoe6]

Not to mention the I-400 was actually based on the Surcouf.

[@JacobA6464]

@@cedjoe6 VIVE LA FRANCE

[@charliesilverwood3608]

I believe the Surcouf was a work around for the Washington naval treaty. Rather than being a submarine, it was envisioned to be a cruiser/sub hybrid and act as a cruiser.

[@OurBenefactors]

Just as they finished building it, the London Naval Treaty came into effect, banning people from putting huge guns on submarines like that. The Surcouf was grandfathered in as it was already complete, but it was the only one*, making it a truly unique ship. *Technically the British M-class subs also had big guns on them, but only one of those was actually built with the gun, and it never saw combat.

[@pieguy7157]

*Video:* Premiers in 2 minutes.... *my shift:* Starts in 2 minutes *Me:* **shaking fist in the air* I’ll never forgive Walmart

[@sam8742]

Feels bad

[@spino_s]

fat F

[@thomaszhang3101]

Job at Walmart: cursed by design

[@844SteamFan]

@@thomaszhang3101 yeah...

[@nitsu2947]

I'll never forgive the Walmarts

[@privateer_am]

Now Cone only has Aircraft to make to become the Avatar, Master of all 3 theatres

[@DerpyPenguin4747]

Spruce Goose?

[@p3chv0gel22]

Space Force?🤔 I only say the "rods from god" idea...

[@nickolaswilcox425]

i believe there are technically five, but cyber is still too new and doesnt have much in terms of fun toys, space however has had a few quirky things

[@privateer_am]

@@nickolaswilcox425 Maybe in 2090

[@avsbes98]

Space and/or missiles could also be featured.

[@KingofStreet3]

When you thought the aircraft carrier rework was bad..... it’s worse now, now that it can submerge itself.

[@davidhollenshead4892]

And the only mission to attack the US that the I-400 attempted was using Bioweapons on the West Coast of the US... [ Due to our passenger aircraft & trains, this could have killed a quarter of the population of North America, if not the world, as this was Weaponized Bubonic Plague. Of course, had this happened, the Japanese home islands would still be inhabitable today, and Japan would only exist in the history books...]

[@mounirdarwiche6075]

I Love how easy this kzbin.infoUgkxvAj3godqGAIP5rApM1laH767JGtPG1-h carrier is to adjust from my friend to me taking turns holding the baby! It provides great support on my back too! This has definitely made shopping easier! I always get asked where I get it too!

[@Science_Fiction13]

Even though these submarines are mainly forgotten, they still live on in Kancolle and Blue Steel, mainly Blue Steel

[@smitethecanlord]

The I-401 will forever be remembered and loved by us weebs

[@lordcaptainteapot6143]

Thank you Cone for letting me help out on this video, was a fun time writing it. Here’s to more CbD!

[@anonimosu7425]

I-400 fanatics : exist Pre-war Japanese Aircraft Carrying Submarine i.e I-15, I-26 : Am I a joke to you?

[@IshijimaKairo]

they don't exist at all, nope, nah, never heard of 'em.

[@Unknown1355]

Type Bs AFAIK only carried and used a single recon floatplane, meant to spot targets rather than to attack them. Very much like the cruiser/battleship floatplanes. I-400 meant to use the aircraft in offensive role, like aircraft carrier's dive bombers. This is the distinguishing role, which was also mentioned in the video at 13:03. While type Bs were impressive, they were not near the capabilities or purpose of I-400s.

[@jehoiakimelidoronila5450]

Ooopps...

[@swag_8884]

Average I-400 fan vs average I25/26 enjoyer

[@agentepolaris4914]

How many pre-war Aircraft Carrying Subs existed before the I-400?

[@communist_toast9988]

Wow some one that uses the trailer feature

[@natbacli14]

"Picture it... Salvation!"

[@palusokudo5570]

CRISP WHITE SHEETS

[@BusterBuizel]

*THE OCEANS THEY SING LATIN*

[@odstbag337]

>

[@thomasscaife6867]

When you get a chance, you should take a look at the Courageous-class Battlecruiser HMS Furious. From what I know, it was designed specifically to fight in the Baltic, armed with two 18-inch guns and only displacing around 20,000 tonnes.

[@clientcomun1958]

that's the definition of a glass cannon. It became a nice aircraft carrier on its hull though

[@Hello-og]

Just a quick note: the Courageous class was to be armed with four 18-inch guns in 2 twin mounts. The final ship, the HMS Furious, was redesigned to carry 2 20-inch guns in single mounts. However she would only ever receive one, with the other (the A, or forward most turret) being replaced with a flight deck.

[@Hello-og]

Also, nit pick, but their official designation was 'Large Light Cruiser'.

[@maj.romuloortiz7832]

@@Hello-og Ultra Super Light Destroyer, idk probably some modern day Japanese Ship designers

[@lephaytheo3098]

Laught frenchly in Dunkerque

[@bodhithespoodergen]

This isn’t cursed this is GREAT

[@notvonbayern9202]

If you want a literal “cursed by design” you should look at “HMS Captain of the Royal Navy” a very early ironclad that was so unstable, she sank in the first storm she encountered. While the rest of the fleet she was with remained totally fine

[@hamescostellos7693]

A submarine that can carry aircraft? Sounds a lot like SALVATION to me

[@odstbag337]

>

[@auraknight98]

«One million lives!»

[@Brocojohn]

As far as I understand, there's nothing wrong with this "ship", except that it's never been used. This design does not seem to be cursed in any way, especially since the US destroyed them to prevent the soviet to get the idea.

[@Predator20357]

It’s cursed as it took so long to be developed that the time it was going to be sent out, the Japanese lost the war.

[@uthopia27]

Also the idea that a couple of bombs dropped just from 3 or 4 tank daily is not enough to make US surrender or stop the war hell look at britain and german they toss around bombs like a piss and non of them said i surrender.

[@Brocojohn]

@@uthopia27 I think it's more about the fact you can strike the ennemy's fleet anywhere, without them being able to spot you beforehand, nor find you afterward.

[@alexanderzippel8809]

I can only Imagine how devastating modern Carrier Subs would be. Modern Bomber and Fighter, on an Mobile Airport that disappears in minutes. Together with Rockets, these things would be scary as hell

[@thefez-cat]

@@uthopia27 It would have been 18 subs, possibly invisible to sonar, able to carry out random bombing attacks on a country that previously enjoyed being simply out of reach of bombers. Now imagine you have no idea how many carrier subs there are, or where they'll strike next. Maybe it dissuades America from continuing the war, maybe not, but more importantly, it absolutely _will_ divert resources because now you're fighting a war on three fronts, one of which is the previously untouchable home front.

[@thelieutenant7732]

The Japanese were very interesting in their carrier hybrids, maybe you could do a video on the IJN Ise next? That was the Japanese battleship carrier hybrid for anyone interested.

[@SeedlingNL]

Imagine being a cv, and after sinking the enemy cv, you keep seeing these torpedo planes pop up.. until finally it dawns on you as you drop torps on some weird-looking new BB and a bunch of torpedo planes take off... (That was my first encounter with a pair of Ise's... I literally went 'wtf'...)

[@yi_hou3092]

The Fusous and Ise Class were really trying stuff

[@tmwarthunder1016]

The next cursed by design naval edition: Flight-deck cruisers. Which are basically Carrier-warship hybrid except they are purpose-designed warships meant to carry planes Edit: You should have added her reason why she is that popular even amongst the Anime Fans as well. She is also the protagonist ship of the anime Arpeggio of Blue Steel.

[@fernandomarques5166]

Never thought I would see a AHnA fan again after all this time

[@tmwarthunder1016]

@@fernandomarques5166 I'm always the fan of AHnA ever since I was exposed to it 6 years ago. Been reading the Manga version since the Anime had ended way too soon

[@soto1649]

Interesting

[@henryrodgers7386]

I'll have to look up that manga... Interestingly, the video's sponsor, World of Warships, has a few surface ships based on Arpeggio of Blue Steel. They are, of course, expensive premium versions of ships found in the game. They have the prefix ARP- in front of their names. That's where I originally heard about the anime. Good to know it has a manga, thanks! - Also, WoWS is adding submarines to the game... I really hope this isn't the future Tier 10 Japanese sub. (Is too much chonk.)

[@daniellxnder]

Ionaaaaa

[@MrChainsawAardvark]

There is another interesting link between the Typhoon and I-400. The need for stability and space meant that rather being one cylindrical pressure hull surrounded by a hydrodynamic shell like many WWII submarines, the I-400 had two such cylinders, giving it a sort of figure-eight cross section under its superstructure. The Russian SSNBM also adopted a multiple pressure hull design. So far as I know, this was a completely independent development as the US scullted the Japanese subs before the Russians could have one, but it makes me wonder about a world where more subs used this option.

[@AlfredJonathanKwak]

you should do the second largest next, the french cruiser submarine, the surcouf, when I first saw it I fell in love immediately

[@someguy95981]

A complementary video to this would be the French heavy cruiser subs. I know that other nations tried them too, but the main one that reminds me is the French.

[@kadavropodden]

How about the British K-class? Steam power!

[@Palmtop_User]

They really did try this for real. It wasnt just a thing in ace combat

[@kabanosek1703]

The question is, did Iona(I-401) from Arpeggio of Blue Steel ever used her plane launching abilities in the manga? Cuz i don't recall seeing it in the anime.

[@rvincentsogrub9975]

She did, time to time as scouts

[@araflare]

arpeggio of blue steel is how I found out this sub existed. I personally love it.

[@mimicnutria18]

"Hi Phil Swift here with a new aircraft carrier! It even works under water!!!"

[@phosophorus8622]

Those cone bucks, they finally paid off!

[@haxavage156]

You should do a video on the Surcouf if you want to talk about weird submarines.

[@SynGirl32]

If you enjoyed this topic, I highly recommend the book "The Second Attack on Pearl Harbor." It's a really interesting look at the various attepts by the Japanese Navy to extend the range of their aircraft in order to attack the US mainland. A very interesting read.

[@uprebel5150]

I saw the float plane being restored at the Smithsonian Restoration Facility in Virginia in August 1993. They let me install a bunch of rivets. About 5 years ago, my family saw the totally restored float plane at the huge Air and Space Museum at Dulles Airport in Virginia. Great to see it restored.

[@MGower4465]

Me too, at the Suitland site. We were not allowed to be hands on, though.

[@comradefriendship]

Really cool that you're covering ships now in cursed by design. How about covering Warthunder naval next?

[@BombatGeneral]

I remember learning about this submarine in the ‘Heroes of the Pacific’ game when I was young. Fascinating piece of WW2 engineering.

[@bradywomack9751]

These subs are one of my favorite what if’s. Especially if the attack on the Panama Canal had of occurred, but all of these subs arrived too late and even the attack on Ulithi Atoll was prevented by the end of the war. The other great what if is the cruiser subs of the French in WWII. I’ve often wondered how effective they would have been and its a shame the only one was sunk after joining the allies and being sent to the pacific theater. It never even made it to the Panama Canal being lost en route.

[@marrvynswillames4975]

each plane could only cary one 500kg bomb, how much would be needed to make a lasting damage on the canal?

[@RolloTonéBrownTown]

Very crazy yet impressively ambitious idea. It's just fascinating what ppl get up to during warfare

[@slavicnonatho8062]

That moment when you're so into killing eachother that wars bring out the best inventions of your kind

[@Xaiff]

That is the case, unfortunately. The desire to one-up others is a strong motivation material.

[@davidhollenshead4892]

Imperial Japan was insane & inhumane. They worked some of their citizens with five 18 hour days & two 24 hour days working in makeshift armaments factories in caves, mines & railway tunnels. They also worked their engineers to death as well, all because "Nippon will rule the world for a time"...

[@davidpereira5969]

Necessity is the mother of invention. And in wars, its inovate or lose

[@Xaiff]

@@davidpereira5969 yep, that another valid way to see it.

[@Eulemunin]

Nice to see you branching out. I am fascinated by the innovation of the IJN.

[@seanmalloy7249]

It's amusing to consider that a desperation tactic on the part of the Japanese in WWII has become a staple of modern combat. When you look at their function, guided missiles and cruise missiles are nothing more than robotic kamikaze, flying to and crashing into their targets before detonating.

[@samshindigstudios7249]

Gonna be honest... I’d really like to see an episode on Russia’s Object 279 Kotin. I keep seeing it in your intro... it’s quite an intriguing tank and I’d like to know more on it.

[@aaronjohn6586]

Would love to see more on planes and submarines. Great breakdown and explanation of an idea that just wasn't meant to be.

[@kingmarsh4657]

Don't tell the Yukes. Or Torres. Especially Torres. *S A L V A T I O N ! ! !*

[@silasskirata]

I dream of a Ace combat game set in the 40s with all of the WW2 super weapons.

[@Slenderman12342]

THEY WALKED OVER MY CLEAN WHITE SHEETS

[@caav56]

@@silasskirata Imagine an Ace Combat game, which covers the Osean War in 1900-1910s.

[@SRDPS2]

@@caav56 Ace combat : Honor wing ????? Lmfaoo Edit : Ace combat's superweapon was started build between meteorite calamity.

[@caav56]

@@SRDPS2 Excalibur and XB-0 were built before Ulysses and for different reasons. I think some zeppelin and submersible aircraft carriers would fit the vibe of the Osean War quite nicely.

[@TheDaltonius]

I loved this ship for years, more people are learning about this again!

[@StealthCloudchaser]

I am so happy ConeOfArc is getting sponsored by such a big game company, Keep up the great content.

[@colebrown4398]

Amazing series, BUT have you ever thought about SUBMERSIBLE TANKS??? Like the Boat Sherman variant. I forgot what it was called but The Tank Museum did a video on it. Thought it would be a neat video on other countries variants of submersible tanks lol

[@Thisisaworkofrat]

Me: *sees new cursed by design video* My Brain: THEY ARE THE PA- Me: *sees that it is about ships* My Brain: PRIDE OF NATION, A BEAST MADE OF STEAL

[@badgermcbadger1968]

Bismarck in motion

[@Thisisaworkofrat]

@@badgermcbadger1968 KING OF THE OCEAN

[@vandansonkar7819]

@@Thisisaworkofrat he was made to rule the waves across the seven seas!

[@badgermcbadger1968]

@@vandansonkar7819 to lead the war machine

[@Thisisaworkofrat]

@@badgermcbadger1968 to rule the waves and lead the KRIEGSMARINE

[@reikomi]

I400, i know that cause of "Arpeggio of the blue steel" Deep diveee~~

[@remismywaifu8482]

Ah yes, iona, brings back memories...

[@Blank-401]

Sad Memories 😭

[@evlkenevl2721]

He noticed that her cameo brooch had been placed at the grave. Then he turned around, smiled and said "Welcome back". That's all I need.

[@MrCreamster20]

I was aware of these before this but your history touch did them more justice. Also for better reference the beam(width) was that of 1.9ish subs as it had to cater for an airtight plane tube on the top... I didn't know about the maneuverability issues it had. Either way an impressive feat of engineering even by today's standards just sad it's true potential wasn't realised.

[@tubabrot4680]

Totally love the idea of doing something more with submarines than just commerce raiding! Could you maybe also make a video about the Battleship/Submarine hybrids of the interwar period? :)

[@Demospammer9987]

I like seeing Cursed By Design spreading out like this. Hoping to see planes and possibly artillery/firearms in the future as well? Definitely staying to see whats next.

[@_EVANERV_]

Due to the added weigh of the hanger components, the I-400s were very top heavy and had a tendency to roll upside down. To solve this problem, the middle sections of the submarines were made up of two hulls that were welded side by side. This increased the platform's stability and counteract the top heavy nature of the submarines. The submarine's unique hull layout plus the hanger compartment also made the I-400s the first multi-hulled submarines.

[@noobplayer_23]

Damn that's interesting

[@kornelion6014]

I know this one, marvellous idea, bad execution...... Hate for these ideas to be left because they couldnt be completed in time....

[@GameMaker3_5]

I remember having some weird plan to make a Silent Hunter 3 like game where you played as Japanese subs during WW2, the I-400 sub would have been one of the ships you could play as. You would have been able to choose from a select list of pilots for either doing scouting missions or for doing kamikaze attacks on enemy ships, this would have affected whether your pilots were either well trained for were cheap easy replacements...

[@Charlie-fk4ly]

Cool, now your doing ships! This is gonna be interesting!

[@ChenAnPin]

Dunno if anybody played the RTS game Supreme Commander Forged Alliance, but that had the "Atlantis" Experimental Aircraft Carrier.

[@gregdomenico1891]

Also had the Tsar flying carrier(TBH, I never really used it as one)

[@ClonesDream]

I was gonna say, that's where I first saw aircraft carrier submarines. Although it was very rarely, if ever, used in actual pvp matches. People focused on the Fat Boy for that long range arty rather than an experimental sub.

[@PhantomRaptor1]

why is the water singing in latin

[@kingmarsh4657]

Salutem omnibus...

[@caav56]

@@kingmarsh4657 Daemon requiēscēs

[@ironsevs]

Definitely interesting and curious creation. Would love to see more.

[@jeffreyskoritowski4114]

"We don't need no stinking ASW platforms and doctrine." Offical position of the IJN 1939, 40 ,41, 42, 43, 44, 45

[@arkadeepkundu4729]

_Meanwhile, Odd 1 out viewers:_ *S O O B Marine?*

[@markgallagher1790]

I see you are a man of culture

[@Farmuhan]

it's time to play SAVIOR OF SONG by ナノ

[@kommo1]

ConeOfArc: "It was April 1942 and just a few month prior the empire off Japan delivered the first strike that would begin the second world war in the pacific." China, Korea, colonial nations: "Excuse me, what?"

[@Predator20357]

That wasn’t the Pacific Theatre, That was South East Asian Theater. The China-Burma-India Theater was also different to the Pacific Theatre

[@cyboot214]

The crew of the kamchatka is ready and waiting to embark, admiral @ConeOfArc !!

[@user_698]

I didnt even know of this behemot!Thx for making the Video, will for sure be interssting

[@pogwog5309]

No one: Japan: Hey lets make the Alicorn from Ace Combat real, except without the railguns

[@SulfurD10x1de]

Love the video, I hope you do videos on other weird submarines, like the tracked submarine, the Seeteufel, also know as the other Elefant

[@FIRE_STORMFOX-3692]

Thanks I love this concept

[@richarddouglas688]

The Seiran is not in Ohio, the Smithsonian you mentioned is next to Dulles International Airport in Northern Virginia. It is in the Udvar-Hazy.

[@pauld6967]

I was just about to comment that I was unaware of it moving from Udvar-Hazy to Ohio. Thus proving the value of looking at the comments before posting. 🙂

[@GrumpyIan]

He must have been thinking of the Dayton Airforce Museum.

[@richarddouglas688]

@@GrumpyIan He might have been, but the Seiran is at the Udvar-Hazy. I know this since I used to live about six miles from there, and last saw it before COVID-19 hit. The AF museum doesn't list it in its collection in any event.

[@pauld6967]

@@GrumpyIan I thought the same, that he somehow confused the two. Although it is not impossible that the Smithsonian might loan the plane to the US Air Force Museum.

[@jeffreyskoritowski4114]

The correct term is the National Museum of the United States Airforce.

[@weerakadechernkwankaew2303]

The intro is still saying "count less tank" but this EP IS ABOUT A SUBMARINE

[@ConeOfArc]

This episode was made since my community challenge in twitch reached it's goal during my WoWS sponsorship

[@hicknopunk]

It's just a long tank, with no treads, no turret and oh on the water. 😄

[@franciscoduarteauthor]

I mean, there were treaded subs...

[@watcherzero5256]

I nominate a fascinating aircraft for a episode that almost no-one has ever heard of, the Dornier Do 31- The only VTOL troop transport ever built!

[@pepson2993]

Well it's surely an interesting design but not the only VTOL troop transport, as of today the V-22 is still in service with it's replacement currently in design. But if you are talking about jet powered VTOL troop transport then you might be correct abiut the DO being the only one. Cheers

[@dramaking9559]

Japan: We bring a Submarine that carriers planes with Plague! USA: TASTE THE SUN!!!!

[@paststeve1]

Great video! Very interesting to hear more about their design and size.

[@theEWDSDS]

I remember so amazed by this thing in Battlestations: Pacific. Absolutely massive.

[@kakarottsaini8356]

I would really love to see a Cursed By Design episode about Bismarck or Yamato

[@ryanorusio1056]

A modern equivalent of this could be made with cheap strike drones, imagine pearl harboring an enemy fleet with a wave of disposible drones that rocket several ships before kamikazing into others.

[@onEmEmbErstudios]

I love your choice of music here

[@milkapeismilky5464]

The french Surcouf cruiser sub, rockin' 2x8in guns. Crazy design!

[@The.Magyar]

Once again I’m in school for this

[@taufiqutomo]

Matias Torres: write that down, write that down!

[@bobtank6318]

If you ever decide to do another submarine for this series, could you do the one-off US Narwhal class?

[@owenmacrowski]

Always been my favorite ww2 sub, good to see more info on it

[@tswims92]

We’re the I400s really the strangest ever created? I would have thought the French Cruiser Submarine Surcouf with its 8” main gun would of taken the cake. But more important great video! And more warship videos like this would be great.

[@johnreed9435]

A land based Seiran trainer was shipped to Sand Point NAS in Seattle after the war and sadly disappeared from memory

[@KriptoSeriak]

As usual, an awesome Documentary.

[@hoppish088]

Another legacy of the I-400 class is the SSG and SSGN boats of the 50’s and beyond. Many had to surface to launch their SSM ‘s.

[@brysonwolffe9316]

Japan: makes underwater aircraft carriers to attack mainland U.S. Also U.S: laughs in B17 bomber*

[@Zestric]

Also US: *launches medium bombers from carriers just because *

[@christophervanoster]

This sub was OP AF in battlestations pacific

[@GrumpyIan]

I would love to see a cursed by design for aircraft. Some planes: Bachem Ba 349 (Natter), MXY7 Ohka (Baka Bomb), Vought XF5U (flying flapjack/ pancake), Fieseler Fi 103R Reichenberg (A V1 rocket with a cockpit), finally the Avro Canada VZ-9AV Avrocar (Literally looks like a flying saucer)

[@Tigershark_3082]

Seeing how you decided to branch out with your cursed by design serious, would you ever be willing to do an episode on the Vought F7U Cutlass?

[@penguinsrockrgr8yt216]

10:22 Wow Japan was almost 100 years ahead of California’s government (The rat problem in San Fransisco has led to a resurgence of the plague)

[@PanzerdivisionWiking]

Awesome video! Love your channel man

[@joshuaolejasz9590]

I hope to see Surcof soon, or the cruiser/submarine with a scout plane

[@mitcho_M50]

Love your videos but I'm honestly down for ANY vehicle that falls under the "failed design" catagory. Thanks for the great work and I look forward to more videos, no matter what vehicle.

[@ichbinphillip]

How about Cursed by Design being about Tanks, Planes and also Ships of War in the future? I bet there are also many Planes that fit this series

[@shotguntod]

Good :), another cursed design to put on my alternative WWII story

[@bluntcabbage6042]

If you like this sub, you'd like the French designed _Surcouf._ It was a submarine with the ability to launch a reconnaissance aircraft and had a primary armament of a dual 8 inch gun turret. It was meant to be a commerce raider that could outrange convoy escorts, and is a considerably better design than I-400 in my opinion.

[@shotguntod]

@@bluntcabbage6042 nice, I'll try to implement the two when I have the opportunity to put them in a place in the story that makes sense

[@xirensixseo]

i think you could do these videos about the gustav and dora guns, and the sturmtiger, and the amerika bomber project, and the japanese incendiary balloons, and the mystery ball tank, and.. i think you could cover a lot of things

[@ParanoidCarrot]

i wonder if you could do one that type submarine that would use drones, it would be a good way to have airsupport with out a massive carrier near

[@MatthewChenault]

A recommendation for a “cursed by design” video: the H. L. Hunley.

[@nickgarcia7415]

It's my opinion that the US did test that hull covering and it was surprisingly effective. Because everyone now has something similar on their subs. The Russian subs has or had a coating of up to 6inches I believe.

[@OffGridInvestor]

I BELIEVE...... ONE of the mini ones went down to Sydney, NSW Australia. And ALSO Queenscliff, Victoria Australia. They would release a plane for a recon mission. And in Sydney we shot at the thing. I can't remember if we hit it but they lost munitions and they sat at the bottom for DECADES. We only blew them up a few years ago.