Ah, fabulous, an H. I. Sutton upload. Please make many more, Sir!

So rare to hear the Barbel class mentioned, I had the privilege of spending a bit of time upon the USS Bonefish in the 70's as a midshipman...Thanks!

Considering that the JMSDF already pushed the boundary with the "multirole destroyers" carrying F-35s I wonder whether the future iteration of subs will feature VLS as well, like the most recent South Korean SSKs.

For their long-perceived simplicity (crudeness?) when given the opportunity, Japanese WWI subs were indeed sophisticated and effective. After all, the I-19 launched one of the most effective torpedo attacks in history (and the only perfect score for a 6-torpedo spread?) when she sank the carrier USS WASP, destroyer USS O'BRIEN and damaging the battleship USS NORTH CAROLINA in Sept 1942.

The Li-ion batteries they are using are probably solid ones. With glass as the medium. They are less prone to fires and smaller in volume though energy density is the same. The advantage is that you don't need the AIP to get weeks long dives and the Li-ion will provide more power so that the boat can go faster than 2 or 3 knots. This is a capability game changer for non nuclear submarines. They will be faster and able to sustain that speed for longer which will make their deployments more interesting as their deployment radius increases dramatically. No instead of creeping at 3 kts to your target area to achieve surprise you can probably cruise at 8 kts which will reduce the deployment tine to 1/3rd. As a corollary, safe lanes will no longer be safe as intercepts will be able to happen much further in.

Another well researched and informative video, enjoy your YT channel very much. You deserve faf far more subscribers. Thank you

I'm so glad you have started posting videos. I've been hearing about you over on Sub Brief for awhile.

Souryuu's proper pronunciation is with a long o, "sou" and roll the R slightly while trying to say "you" with slightly long u sound. The "ryuu" part is the hardest to say. Souryuu means "blue dragon" and all class boats are all named after mythological dragons. "Hakuryuu" = "White dragon" "Unryuu" = "Cloud Dragon," "Kokuryuu" = "Black dragon," etc... Taigei means "Big whale" and similarly all class boats are named after mythological whales. The 2nd in the class, "Hakugei" means "White Whale." The -shio class boats, like Oyashio, are all named after currents around Japan. Oyashio = "Parent current" Kuroshio = "Black current" Natsushio = "Summer current" Harushio = "Spring current" Uzushio = "Whirling current," basically "Whirlpool"

Very cool info. Came from Sub Brief. Thank you for these videos

Like the evolution of Japanese subs, a vital force in the Pacific . Subscribed, thanks

Thank you, excellent. got extremely curious about the JMSDF after listening to Andrew Lambert mentioning that during the Cold War the JMSDF continuosly tracked Soviet submarines and obviously the PLAN today as they try to head out into the Pacific.

Everything you put out is so interesting and informative. It is very clear why you are considered one of the best and most accurate sources of information on the internet.

Hi Mr Sutton, your video have evolved in a very nice way. The format is captivating. I would really like to hear your take on German and French submarine development. P. S. In my humble opinion you could extend the length of your videos to go even more in depth!

Love and support Japan

Excellent Video!, Post-war Japanese military equipment has been a real interest for me. Although I'll have a nitpick is that the JMSDF Naval Ensign and the IJN Naval Ensign proportion-wise are identical, the JMSDF's sun isn't offset like it was shown in the video and should be the same as the IJN's but the colors shown seem to be accurate.

Please keep up the good work. Very informative and concise. Thank you.

Thank you for your efforts with submarine education. As an Australian I have been attempting to learn more about subs & why Australia went away from the French to what is said to be UK, US or a combination of both, in nuclear form. I wonder if your viewers would be interested in Australia's history with subs up to present times. Just an idea. By the way I think your Japanese pronunciation was not too bad at all. ;-)

Fantastic video, I always find Japanese submarines a fascinating but under reported subject, its great to finally find an interesting well informed video. Keep up the good work

Great and very informative. Thanks for doing.

Brilliant video mate! Love watching your videos, looking forward to similar videos for other counties, and maybe even an article on the taigei for you website for that awesome art that you do!

on one hand japanese ww2 submarines are under rated but mostly because japanese didnt use those properly. more scout missions than organized attacks. also those were riveted not welded and were in that technology way behind other nations

An excellent video, as usual. It's a privilege to watch your videos and read your blog. I heard that Japan is willing to double its defense budget in the coming years, it'll be interesting to see how this plays out.

My grandfather fought the IJN on a destroyer and saw that rising sun as an enemy and tyranny. Two generations later and a slight design change to their ensign and I see it as in defense of freedom and liberty on front line of tyranny of CCP. Japan may be the US best ally along with the British and Australians. 👍🇯🇵

Amazing stuff as always Sutton! Would love to Se a Video on all the Various Midget Submarines of WW2 and some of the later ones.

I don't know if anyone has mentioned this -- it's been a minute since the video came out -- but I believe the navy ensign has not changed. It's the army, or however they call it officially, war flag design that is slightly changed (fewer rays and a partial gold border).

Love all the new content! BZ

I was looking for a video about the JMDSF and your video was a good introduction for my research. Thank you! 🙂

Not much traffic?! Submarine fans watching one of the most knowledgeable authors on the silent world of submarines is traffic.

Thanks for the video!

Love your work, Mr. Sutton. Thank you!!!

Very cool information! Can you do a video on Dutch submarines and innovations?

KZfaq actually recommended me this video from a channel i dont follow and it was not garbage. Amazing.. Subbed.

Thank you!

I would love to see a video on the Columbia and Dreadnought . They are both larger than their predecessors yet have a smaller number of missile tubes. I have seen some speculation it’s due to use of electric drive

god i love this guy!

Great video ☺️

Excellent ,and enjoyable video!

11:55 "it replaces AIP! It goes beyond AIP!" I'd like to hear more when you get a chance, or perhaps a pointer to another video if already covered? Long long time listener, love the channel.

What a good content Sir H I, good luck and keep uploading. I hope to watch your topic about midget submarine soon.

Thank you for the interesting video I learned some things I did not know. I would like to see a video (possibly a short one) on anti torpedo , self defense torpedoes.

Very good video! And to think...for their Attack class...the Australians rejected the Japanese Soryu in favor of the French Barracuda.

You should do a 'what if' episode for fun on famous submarines from fiction, like the Nautilus and the Seaview

Extremely interesting video! Can you do a similar one on post war German U boat evolution?

It would be fun to see a video that follows the Type XXI boat's immediate influence after the war. Great video, wonderful presentation.

Sent by JiveTurkey - he’s our hero - and he better get those JivePlushies done or he’ll be in some big trouble!

The first two Oyashio class submarines have been converted for training. I'm rather surprised that the Japanese are moving away from AIP. I wonder if it's a noise issue or if they think they can get enough time on station and power with lithium batteries. I thought the ROK KSS-III class had lithium ion batteries.

How is going from AIP to battery a "step up" or "beyond"? I don't see it. Sounds like a step back. What is the pro there other than perhaps ease of maintenance? It's still gotta be a bigger fire risk though.

How about making a video about submarine purchases and plans in southeast Asia? With all the tensions in the South China Sea and recently, concerns of some states over AUKUS, the region is seeing a spike in SSK purchases.

Thanks this is really helpful info since I see Japanese subs at the base I’m on and I know nothing about them

Great video, very interesting as always. Can you make video about torpedos?

Could you do a video on the sea wolf submarine ?

Is there a good article or video on the pros and cons of the different aip systems? I’ve been wondering how the sterling engines compare to different types of fuel cells…

More details on the current submarine would be much appreciated.

Wow always imagined u were American. Been following ur articles for years now. Looking for to watching ur videos. Subscribed all ready

Could u do a comparison between Netherlands Walrus class, Australian Collins class and Japan's Oyashio class as they were all of similar size, design and build vintage. Would be very interesting comparing each of their SWOT and design parameters. Thanks in advance.

Haji sutton ternyata punya channel youtube juga ya.... auto gw subscribe deh

last 2 soryu have AIP + lithium ion batteries or just lithium ion batteries?

Why non nuclear subs have so small passive sonars? Because lack of electric power?

Thanks, how well do they perform

It seems Japan is choosing to have a total of 17 to 20 subs in service spread accross two types(families) for the fifth time. Interesting way of smoothly upgrading their fleet. 🤔👍

Very interesting video, thank you. I would like to know, which of them have some kind of stealth capabilities by their external shape, deflecting enemies sonars. And also, when you say that Targei subs are beyond AIP, what technology exactly have they introduced, and what are the advantages of that tech. Thanks.

I'd love to hear more about Dutch submarines. Have heard that they're highly regarded

Its interesting that both the Oyashio and Soryu designs are both aesthetically similar to the Astute class in terms of casing design and shape. Is there a reason for that or is it just coincidence?

@1:00 - The sailor on the bow looks so happy to be there. Just him, straddling the submarine. I may have laughed a bit. Perhaps! :P

This is obscure content but i like your style

Keeps you informed of a countries Submarine history and capability

Interesting introduction, overview. I think YT is all about going much deeper than a TV program would, therefore I found this rather superficial.

I got referred to your channel by Sub Brief. He has nothing but good things to say about you.

What happened to the old boats taken out of service? Did they get scrapped, or were they sold to other users?

You bring great honor to your family.

If I were a sub designer, the only way I would attempt to implement lithium ion batteries would be in their own compartment with the equivalent of blow-out panels (like the M1 Abrams ammunition compartment) and reinforcement to the sub body where it meets their compartment in an attempt to preserve the rest of the sub if the batteries blow. I think that otherwise it is too dangerous.

Is there any American or British WW2 sub movies you like or find true to life?

seven taigeis actually

I have a suggestion for another youtube video. With the growing tension between China and Taiwan, it would be very interesting to go thru all the the Chinese submarine classes.

Good video, but you segmented So-ryu wrong. Well Japanese Hiragana and Katakana are mostly monographs, where one character is one syllable, they also have digraphs that use two characters. A good rule of thumb is the syllable ends on an 'a, i, u, e, or o'. No syllable combines these, though you do get long vowels.

By the way, JMSDF is the only "navy" that builds 1 and retires 1 submarine every single year. Which is super impressive.

And spanish S80?

見た目は涙滴型がいいなあ

Great videos. Very informative! This is my primary source for most of submarine information on KZfaq, hands down :) Can you do a deep dive (pun definitely intended) into Pakistani Submarines? i.e. the Agosta classes with AIP and the upcoming Yuan class. Thanks.

you mention that Japan was advanced in it's military doctrine regarding submarines, and the designs during ww2, can you produce a video explaining all of this?

What reason is there for choosing a "drooping" bow shape like the Soryu rather than a more rounded shape?

I haven't seen a single one of these videos that I haven't been impressed by.

from a kibbitzer who knows nothing: create slides with general outlines/specs for sub classes- size, crew, load, arms, speed. You can reuse them repeatedly. 2. define general terms" bigger" - you can do it by slide showing general specs or comparison slide to US class (Barbel). Again, you can recycle general outline slides elsewhere. Japan had "nuke free" policy-this had to have impact on sub/military development. You can make "class sub" slides with names of subs. When something is printed on a slide, we can stop, copy, look things up. Am cat with unlimited curiosity despite being ignorant.

👍👍

Taigei is experimental, not commissioned just yet. Engineers are mapping/exploring the map/envelope of the batteries. In videos of it, she never displays the national or naval ensigns. When she does, we'll know JMSDF is confident of the new system.

A very good & educational video but lacked the knowledge about the different weapon and detection systems carried aboard each class. I think covering those topics would have been more important than just similarities of hull designs. I gave you a "like" but not a subscription because of that level of lacking details.

Shouldn't liquid flow batteries be great for submarines? For example vanadium liquid flow batteries? The fire hazard should be really low at least.

Could you please make a video about Canada's vulnerability to Russian submarines/nukes, particularly the submarine base in Victoria, BC.

Very interesting channel, thank you! I have one specific question on submarine construction: given that submarine batteries are critical components and react very badly to contact with water, I‘ve always wondered why they are placed at the bottom of the ship where they are sure to come into contact with water if there is a leak. Also waterproofing them seems to be something of a problem. Seems counterintuitive to me though there is surely a very sound reson which escapes may layman’s understanding of this. Maybe there are some other outwardly counterintuitive things about submarines that come to your mind and maybe you might want to make a video on these?

I wish the Japanese Navy would go back to naming there sub I boats and RO boats

The one dislike must be the North Korean navy.

Question is what is the mission for these submarines. There country is mostly allied work and they are building top of the line boats. Japanese are great engineers, and we say like Germans just with a different accent. But what part of their domestic policy does this fill and who are there number 1 enemies? Also is there philosophy is to keep there major force underwater, unphotographed to avoid negative domestic and foreign issues? Don't forget Korea's military tends not associate with the Japanese. Wish there had been some cutouts of these subs showing their interior configuration.

it is Sor and you Soryu

Outstanding, as usual, thank You! Would You consider making a video/episode explaining Nato SSBN patrol areas and Soviet SSBN patrol areas and the tactics each side used to protect their own subs and the tactics used to find/trail the other side's SSBNs with attack submarines? (Regrets on possibly the longest sentence I've ever composed). The 2 sides referring to Nato vs Warsaw pact, including what you may know about French participation after pulling out of NATO.

Japan is a great ally 🇺🇸🇺🇸🇺🇸🇺🇸🇺🇸

Soryu is pronounced Sore You. I don't know where you're getting a W sound from.

Could you imagine that after WWII, Germany changed its flag by slightly changing the color and changing the margin justification of a few symbols to the left? But no problem here...

How about a video on Indian Subs? Past, Present and Future, they're the next Navy that's on the cusp of transforming their Sub force into a true blue water force.

Tr-1700-class submarine

soon more navies will have AIP ballistic missile submarines. and with non nuclear weapons.