U boat cap badge for identification please

[glaser]

[ATTACH]3948882[/ATTACH]

[ATTACH]3948883[/ATTACH]

[kfs]

2 wooden Shoes ?

https://www.google.de/search?client=....0.dHyU3RmeFUk

[glaser]

kriegsmarine u boat wool hat cap insignia or fantasy item?

yes indeed, but the question is: is it linked to a specific u-boat (dutch captured U-D xx?) or just a fantasy item from that sailor?