What is the Role of U-235 in Nuclear Fission?

[KingGambit]

Today I learned that U 235 is not a German Uboat

 

[BvU]

Neither is U2



$\$

 

[Borek]

Actually U-235 was an U-boat. It sank twice.

 

[KingGambit]

Actually U-235 was an U-boat. It sank twice.

Wow, Sir. You are a real historian.

 

[Vanadium 50]

It sank twice.

Story, please? (It was sunk by its own navy, I know.)

 

[Borek]

Story, please? (It was sunk by its own navy, I know.)

Just from wiki: After training with the 5th U-boat Flotilla at Kiel, U-235 was transferred to the 22nd flotilla on 29 October 1943, following her sinking in May by US bombs in Kiel. She had been raised, repaired and returned to service. She was reassigned to the 31st U-boat Flotilla on 2 April 1945, less than two weeks before her second sinking.

 

[BvU]

Anyone can google, @Vanadium 50 !
It wasn't a very successful boat :

$\$

 

[Roberto Teso]

So if U-235 accidentally collided with U-233 they could have reached critical mass!

And if U-238 had been involved as well this would have become the (P)U-239

 

[collinsmark]

Today I learned that U 235 is not a German Uboat

Unfortunately for the video's accuracy sake, the image of the bomb in the video is the Fat Man bomb, which was ^{239}\mathrm{Pu} based (not ^{235}\mathrm{U}).