[THEBERBSTER]

Hi B
You do not want to install your game in the Program Files (x86) restricted directory.
Insttall in C:\Ubisoft\Silent Hunter 5
Update SH5 From v1.0.5.0 To v1.2.0 Immediately After Installing > Pictorial

Run Your SH5.exe Application As An Administrator > Pictorial

If your installation is a Uplay download then use this fix.
Uplay Download Version Fix For SH5 And TWoS > Pictorial

What mods have you installed?
JSGME How To Export Your Mod List To A Subsim Post > Pictorial

Did you run the stock game after installing?

Peter