RL subs at PD in heavy weather

[Der Teddy Bar]

A was a code depth that was given to the commanders by BUD/FDU. It was changed through out the war and was used to disguise the u-boat's real depth.

For example, A might be 35, so A+20 was in reality 55.

[Rosencrantz]

Der Teddy Bar wrote:

A was a code depth that was given to the commanders by BUD/FDU. It was changed through out the war and was used to disguise the u-boat's real depth.

Oh, I see... Very logic. Thanks for info. I'm still wondering different procedures in heavy weather. (Maybe because in my ongoing career I haven't been very lucky with weather.)

Many of us seems to dive in storm under a heavy fog. I haven't done this much and actually I have been in collision due to weather just ones in the North Sea and even then I could make it home.
Just wondering, in many documents it's told how they run on surface even in heavy mist, (for example Prien and Kretschmer when looking for a convoy early in 1941 found eachothers boat before the convoy) and I have been thinking what was the reason for this? I think maybe the main reason was communication: In heavy weather the sub likes to dive deeper wich means it's unable to receive any messages via radio. Other possible explinations, like saving the batteries, I consider less valuable. Can anyone confirm these?

-RC-