Try here:
C:\Program Files\Steam\steamapps\common\Silent Hunter 3\data\Cfg\Commands_en.cfg
lines :
[Cmd50]
Name=Camera_on_next_unit
Ctxt=1
Key0=0xBE,,">"
Page=0x34000000,3714
[Cmd51]
Name=Camera_on_prev_unit
Ctxt=1
Key0=0xBC,,"<"
Page=0x34000000,3714
Jonny
