Kriegsmarine Footwear on board U-Boats.

[james Stewart]

Sorry if this seems an odd question to ask.

What type of footwear was most commonly worn on board submarines ?

I have seen ( I can't remember the source) details of a special type of shoe with a "composite" sole , did this exist - if so was it widely issued ?

Any information and illustrations on type of footwear worn on ( in) board and on watch keeping duties would be very welcome.

Something which you don't see well illustrated in books as a rule.

Thank you to all in advance.