Question about cameras on Uboats

[areo16]

How often were photo cameras brought on uboats? And if they were brought, was the film developed on board the boat or after the patrol was over?

Thanks.

[RConch]

Mostly discouraged for security reasons-same with private diaries.
If a correspondent was on board-different story.

[areo16]

Did the captain's keep a diary other than the patrol log?

And do you think the film was developed on the boat?

[RConch]

Probably not on both questions. The Captain was most responsible for following orders\instructions.
A u boat doesn't have room for a dark room, nor would they want to store chemicals.