Ah this is the right thread,it never happens to me before,grrrrr.
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I am 99% sure that the type`s IX-A,B,C,C/40,D-1,D-2 and the D/42 had wood decks on there boats.
Like Bill said,most unlikely that hole boat has a steel deck,I think it`s way to heavy.But some areas of the boat is possible.
The CT decks is another story,for example,I have some pix of the U-198(IX-D2) the upper and lower decks are steel.
The CT decks of U-889(IX-C/40) had wood decks after her capitulation,for each boat it`s different.I think this
has something to do with.......when and where(place and date) a boat was build in wich yard or the different kinds of shiprepairyards when a boat sufferd some
damage after a patrol,The shiprepairyards were in Germany,Japan,France,Norway etc etc.
The hatches for the external storage containers is also for each boat different, some boats has steel hatches,
some boats has wood hatches and some boats has a combination of both,steel and wood.
I Hope this helps!!!!!!!!!