Check out my tutorials and get yourself a decent mod set up as stock is rubbish and full of bugs compared to what you can do and what is available mod wise for SH5.
You also need TDW's Generic File Patcher (tutorial post#2)
You also need TDW's Option File Editor Viewer (tutorial post#6)
Link to my SH5 – SH4 posts:
Step By Step Tutorials & How To Do It
Also Included Are Some Useful Download Links
http://www.subsim.com/radioroom/showthread.php?t=211804
You can use TDW’Generic File Patcher with STEAM see my Tutorial Post #125