type IX's with a cut back fore deck?

[Freiwillige]

Got me a coppy of Squadron signals U-Boats in action recently. They talk breifly about cutting the forward deck or removing it all together to increase diving time. It seems that the standard deck was so wide that it trapped air and kept the nose up longer than with the cut back decks.

Anybody have any pictures or more info?

[Mittelwaechter]

There were two types of modification (A+B)

Those U-Boote were modified (U-Boot;Type, Date and Location of modification):

> U 170 Typ A Werftliegezeit 18.12.1944 – 01.03.1945
> bei Deschimag Seebeck
> U 190 Typ B Werftliegezeit 15.10.1944 – ??.01.1945
> bei Deschimag Bremen
> U 516 Typ A Werftliegezeit ??.10.1944 – ??.01.1945
> bei Howaldt Hamburg
> U 518 Umbau während Werftliegezeit bei Oderwerke
> (not sure)
> U 530 Typ A Werftliegezeit ??.10.1944 – ??.01.1945
> bei ???
> U 539 Typ B Werftliegezeit ??.10.1944 – 25.01.1945
> bei Schichau Königsberg
> U 548 Umbau während Werftliegezeit in Kiel möglich
> (not sure)
> U 804 Typ A Werftliegezeit ??.10.1944 – ??.??.1945
> in Kiel
> U 805 Typ A Werftliegezeit 01.10.1944 – 22.01.1945
> bei Deschimag Seebeck
> U 853 Umbau während Werftliegezeit bei Schichau
> Könisberg (not sure)
> U 857 Umbau während Werftliegezeit bei Howaldt
> Hamburg (not sure)
> U 858 Typ A Werftliegezeit 24.10.1944 – ??.02.1945
> bei Howaldt Hamburg
> U 866 Typ A Werftliegezeit 09.01.1944 – 18.03.1944
> bei Holmwerft Danzig
> U 867 Typ A Restarbeiten 06.06.1944 – 10.08.1944
> bei Oderwerke Stettin
> U 868 Typ A Restarbeiten 15.09.1944 – 04.12.1944
> bei Oderwerke Stettin
> U 869 Typ A Restarbeiten 29.06.1944 – 23.09.1944
> bei Oderwerke Stettin
> U 878 Typ ? Restarbeiten 14.08.1944 – 20.12.1944
> bei Deutsche Werke Kiel
> U 879 Typ ? Restarbeiten 23.08.1944 – 14.01.1945
> bei Deutsche Werke Kiel
> U 880 Typ ? Restarbeiten 22.08.1944 – 15.11.1944
> bei Oderwerke Stettin
> U 881 Umbau während Restarbeiten bei Oderwerke
> Stettin (not sure)
> U 1226 Typ A Restarbeiten 24.06.1944 – 22.08.1944
> bei Howaldt Hamburg
> U 1232 Typ A Restarbeiten 09.07.1944 – 09.09.1944
> bei Howaldt Hamburg
> U 1233 Typ ? Restarbeiten 27.07.1944 – 26.09.1944
> bei Howaldt Hamburg
> U 1234 Umbau während Reperaturliegezeit bei
> Oderwerke Stettin (not sure)
> U 1235 Typ ? Restarbeiten 09.09.1944 – 26.10.1944
> bei Howaldt Hamburg

[UberTorpedo]

Here's some others

[Weiss Pinguin]

Wow... I'm guessing the crew probably didn't do that themselves?

[Mittelwaechter]

Nice pictures, UberTorpedo!

It was called "Schnelltauchback" - Fast Diving Back.

[UberTorpedo]

Hey look,

I found a few others...



and in the lower right-hand corner...

[kenijaru]

Originally Posted by Freiwillige

....to increase diving time....

it would actually to decrease diving time (or increase diving speed)
but... interesting subject... i had seen one picture but had NO idea what it was made for. I does look like it might slow down submerged speed a 'lil bit.

[Freiwillige]

Originally Posted by kenijaru

it would actually to decrease diving time (or increase diving speed)
but... interesting subject... i had seen one picture but had NO idea what it was made for. I does look like it might slow down submerged speed a 'lil bit.

Yes that is what I meant, faster dive time of course.

[popcorn2721]

thanks for posting those photos...I had no idea that those mods were ever made.

[kurfürst]

if You want to see some footage of U-858 and U-805 look here:



Those boats belonged to the U-Bootgruppe "Seewolf" and were planned to attack in the New York area (in May 1945!!).

The type IX C/40 is a very interesting U-boat, but surprisingly never caught as much attention than the VII C´s.

Here´s another fine shot of CO Thilo Bodes U-858:



Maybe someday somebody will mod a realistic IX C/40 for SH III, as the quality of the games U-boat is quite poor!

Beste Grüße, Kurfürst