About dive depths - modders set it to quite deep (40 and 120 meters is standart depths for unmodded game, not for TDW UI). You can change it in ...\Silent Hunter 5\data\Submarine\NSS_Uboat7a\NSS_Uboat7a.cfg file (for VIIA boat, for other boats - other folders). Just open it via notepad and I think you will understand.
About camera don't know, didn't happen to me. Except bobbing near UZO. Saw that only twice, but not for long.
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