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Mystery of the lost WWII Japanese mega submarine that could travel around the world 1.5 times before
http://www.dailymail.co.uk/sciencetech/article-2517395/Lost-WW2-Japanese-mega-submarine-near-Hawaii. ^ | 17:48 EST, 3 December 2013 | Ted Thornhill

Posted on 12/04/2013 11:47:20 AM PST by BenLurkin

A Japanese submarine that was preparing to attack the Panama Canal during World War Two has been discovered off the coast of Hawaii.

The 400-foot (122-meter) ‘Sen-Toku’ class vessel - among the largest pre-nuclear submarines ever built - was found by chance in August off the southwest coast of Oahu.

It has been missing since 1946 according to scientists at the University of Hawaii at Manoa.

The I-400 and its sister ship, the I-401, which was found off Oahu in 2005, were able to travel one and a half times around the world without refuelling.

(Excerpt) Read more at dailymail.co.uk ...


TOPICS: History
KEYWORDS:

1 posted on 12/04/2013 11:47:20 AM PST by BenLurkin
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To: BenLurkin; Admin Moderator

Posted yesterday evening: http://freerepublic.com/focus/f-chat/3097965/posts


2 posted on 12/04/2013 11:52:08 AM PST by Utilizer (Bacon A'kbar! - In world today are only peaceful people, and the mooslimbs trying to kill them-)
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To: BenLurkin

These things were huge. They could carry and launch three bombers.


3 posted on 12/04/2013 11:56:18 AM PST by colorado tanker
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To: colorado tanker
Then there was the French Surcouf-class submarine, built in 1927, which had 2 8-inch(!) guns and a floatplane:

http://en.wikipedia.org/wiki/French_submarine_Surcouf


4 posted on 12/04/2013 12:00:51 PM PST by Kip Russell (Be wary of strong drink. It can make you shoot at tax collectors -- and miss. ---Robert A. Heinlein)
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To: BenLurkin; JoeProBono; dfwgator
Like there was any mystery as to what really happened to it!

Gilligan's Island

5 posted on 12/04/2013 12:02:28 PM PST by Alex Murphy ("the defacto Leader of the FR Calvinist Protestant Brigades")
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To: colorado tanker

It as ALWAYS fascinating to discover “man” at the bottom of the ocean(s)


6 posted on 12/04/2013 12:03:18 PM PST by knarf (I say things that are true .. I have no proof .. but they're true.)
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To: Kip Russell
Then there was the French Surcouf-class submarine, built in 1927, which had 2 8-inch(!) guns and a floatplane.

And a majestic white flag.

7 posted on 12/04/2013 12:06:12 PM PST by JRios1968 (I'm guttery and trashy, with a hint of lemon. - Laz)
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To: Utilizer

(Lots more info, pics, and interesting links there as well -love the one with the IJN model-kit)


8 posted on 12/04/2013 12:14:41 PM PST by Utilizer (Bacon A'kbar! - In world today are only peaceful people, and the mooslimbs trying to kill them-)
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To: Alex Murphy

LoL.


9 posted on 12/04/2013 12:16:27 PM PST by Red Steel
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To: Utilizer

It has not been missing. The Navy sunk it to keep it from the russkies. They knew exactly where they sank it.


10 posted on 12/04/2013 12:18:04 PM PST by Sequoyah101
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To: Alex Murphy

11 posted on 12/04/2013 12:21:06 PM PST by JoeProBono (SOME IMAGES MAY BE DISTURBING VIEWER DISCRETION IS ADVISED;-{)
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To: colorado tanker

and carried a fourth disassembled


12 posted on 12/04/2013 12:21:14 PM PST by GeronL (Extra Large Cheesy Over-Stuffed Hobbit)
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To: Kip Russell

The British M-class submarine mounted a 12-inch naval gun.

http://en.wikipedia.org/wiki/British_M-class_submarine

These types of submarines were outlawed under the Washington Naval Treaties.


13 posted on 12/04/2013 12:29:28 PM PST by Tallguy (between taglines...)
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To: Kip Russell
Wow. I'd heard of the big Japanese boats, but had not heard of the Surcouf. According to Wiki she was built as an "undersea cruiser" to avoid the limitations of the Washington Naval Treaty. But the London Naval Treaty limited subs, so no more of the class were built.

Quite a mystery how she sank. Of course, DeGaulle and most French thought it was a deliberate American plot.

(The Naval Treaties were quite effective in preventing WWII, eh?)

14 posted on 12/04/2013 12:31:20 PM PST by colorado tanker
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To: GeronL
Did some googling and discovered this was a pet project of Yamamoto, who thought a fleet of these things could bring Doolittle-like raids to major US cities. After he was killed the project was scaled back considerably.

High command planned an attack on the Panama Canal, the theory being that would choke US supplies and ship movements. After Okinawa fell and the Home Islands were the next target the Panama plan was abandoned and a new plan hatched for kamikaze attacks on US carriers readying attacks on the Home Islands in the Ulithi anchorage. That never happened, either. One of the boats was discovered running on the surface and was sunk. Very interesting boat that had no impact on the war.

15 posted on 12/04/2013 1:03:14 PM PST by colorado tanker
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To: colorado tanker

There were smaller versions that could carry 2 planes and many countries tested ones that could carry a seaplane but nobody deployed those I think


16 posted on 12/04/2013 1:04:08 PM PST by GeronL (Extra Large Cheesy Over-Stuffed Hobbit)
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To: BenLurkin

If Japan and Germany just had one extra year, we would have been in a world of hurt.

Some of the stuff they were putting out was mind blowing.


17 posted on 12/04/2013 1:11:51 PM PST by VanDeKoik
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To: JoeProBono

That picture has piqued my interest. What is the story behind it?


18 posted on 12/04/2013 1:15:21 PM PST by esoxmagnum (Turtles don't win fights, they just turtle up. Victory belongs to the aggressor, not the turtle.)
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To: GeronL

Of course after the war the US was mounting Regulus missiles onto purpose-built submarines. It was essentially marrying a V-1 buzz-bomb with a nuke warhead. Same theory with updated technology.

All that was invalidated by nuclear propulsion and sub-launched ballistic missiles.


19 posted on 12/04/2013 1:20:57 PM PST by Tallguy (between taglines...)
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To: Tallguy

bump


20 posted on 12/04/2013 1:21:55 PM PST by GeronL (Extra Large Cheesy Over-Stuffed Hobbit)
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To: Tallguy

There were a lot of technology off-shoots that we almost never hear about it.


21 posted on 12/04/2013 1:22:33 PM PST by GeronL (Extra Large Cheesy Over-Stuffed Hobbit)
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To: VanDeKoik

“If Japan and Germany just had one extra year, we would have been in a world of hurt.”

If Germany had extended the war even 6 months they would have been nuked. The A-bomb was being readied with Germany in mind. As it turned out, they collapsed first.


22 posted on 12/04/2013 1:22:35 PM PST by Tallguy (between taglines...)
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To: JoeProBono

A submarine for drainage canals?


23 posted on 12/04/2013 1:28:24 PM PST by OldNewYork (Biden '13. Impeach now.)
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To: colorado tanker
(The Naval Treaties were quite effective in preventing WWII, eh?)

I've heard it argued that they made WWII in the Pacific possible. With limitations on both Brit and US navies, they couldn't control both the Atlantic and the Pacific, so they focused on the Atlantic. This gave the Japs a chance to dominate the Pacific, even within the limitations of the treaties. Arms limitation treaties always work to the advantage of the aggressor.

24 posted on 12/04/2013 2:09:43 PM PST by JoeFromSidney ( book, RESISTANCE TO TYRANNY, available from Amazon.)
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To: GeronL
One of those smaller Japanese subs actually launched a plane that bombed Oregon. The pilot avoided populated areas and dropped an incendiary in the forest with the idea of setting off a cataclysmic forest fire. They must not have known how damp the Pacific Northwest usually is.

http://arcweb.sos.state.or.us/pages/exhibits/ww2/threat/bombs.htm

25 posted on 12/04/2013 2:19:49 PM PST by colorado tanker
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To: colorado tanker

lol


26 posted on 12/04/2013 2:38:37 PM PST by GeronL (Extra Large Cheesy Over-Stuffed Hobbit)
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