The Options File Editor Viewer is located in C:\Ubisoft\Silent Hunter 5\data\Applications\OptionsFileEditorViewer. I just put a shortcut on the desktop to make it easily accessable and it will also require you to point it to your SH5 install and also TheDarkWraithUserOptions.py Also THEBURBSTER Tutororials
http://www.subsim.com/radioroom/showthread.php?t=211804 contains just about everything on "How To" with SH5.
Here is a link to download my
TheDarkWraithUserOptions.py
which has all the mouse in/out stuff activated that you can try without having to set it up yourself. I can't remember if TWoS already has this as default. Just rename the original file and use this one instead. TheDarkWraithUserOptions.py file is located at: C:\Ubisoft\Silent Hunter 5\data\Scripts\Menu\TheDarkWraithUserOptions.py
https://www.mediafire.com/?7qvadan73ksnxkb