View Full Version : The I-400

03-01-2005, 10:45 PM
I was reading up on the I-400 submarine.. and I am simply amazed at what the japanese achieved.
she was an an engineering marvel.. well, almost time for me to pass out here as its getting late.. but i just thought i'd post some info on her..

In many ways H.I.J.M.S. I-400 was decades ahead of her time. She was the world's largest submarine, with a length of 400 feet and a surfaced displacement of 3,530 tons. Above her main deck rose a 115 foot long, 12 foot diameter, hangar housing three torpedo-bombers. These floatplanes were rolled out through a massive hydraulic door onto an 85 foot pneumatic catapult, where they were rigged for flight, fueled, armed, launched, and, after landing alongside, lifted back aboard with a powerful hydraulic crane. The I-400 was equipped with a snorkel, radar, radar detectors, and capacious fuel tanks that gave her a range of 37,500 miles: one and a half times around the world. She was armed with eight torpedo tubes, a 5.5 inch 50 caliber deck gun, a bridge 25mm antiaircraft gun, and three triple 25mm A/A mounts atop her hangar. The advent of guided missiles and atomic bombs transformed her from an overspecialized undersea dinosaur to a menacing strategic threat. Like Germany's Type XXI U-boat she was too late to influence World War II.



03-01-2005, 10:59 PM
The British Monitor class could launch a plane aswell,but more interesting was it's original form.
It supported a 12"main gun(yes that was 12" i said)and it used to surface just the gun out of the water to take shot's!!!
Imagine the specticle of seeing a bloody great gun arrise from the water and start shooting!!
The Brits had an amazing amount of classes,you should see there commerce raider's with twin fast firing turret's!!.

03-02-2005, 01:19 AM
Geeeez! those I-400's are big mutha's...haha!

Here is one surrendering to the US navy.

03-02-2005, 01:19 AM

Like this one:

03-02-2005, 01:33 AM
Awesome how they built a hanger and launcher right on the deck http://forums.ubi.com/groupee_common/emoticons/icon_biggrin.gif

I would love to play around with the British "M" class http://forums.ubi.com/groupee_common/emoticons/icon_biggrin.gif

Great pics guys http://forums.ubi.com/images/smilies/25.gif

03-02-2005, 06:23 AM
wow! These would be so cool to play with in a sub sim lol

03-02-2005, 10:42 AM
well, a lot of Japanese sub carryed single air plane in ww2.But I-400 carryed not scout plane
but bomber. The plane name Aich Seiran.

I am Japanese,so I am very hoping that
someday I want play as Japanese sub commander in SH3 http://forums.ubi.com/images/smilies/16x16_smiley-very-happy.gif

03-02-2005, 12:43 PM
This is something I would like to hear more about.
WOuldn't be interesting to build one of these nowadays? It's like a carrier, but with more defense options.

Well, I would like to now its stats, that is speed, submerged speed, maximum depth, and if it had any torpedo tubes. Couldn't anyone tell it to me?

03-02-2005, 02:31 PM

As you can see it had 8 (EIGHT) forward firing tubes!!!