Partly correct.
Here's the DVD v1.0 specs:
Title: Silent Hunter 4 Wolves of the Pacific
Version: v1.0
Developer: Ubisoft Romania
Publisher: Ubisoft
Language: English
MediaType: DVD
Protection: Securom 7.31.0011
Whereas the 1.4 patch did not have SecuRom (infact even 1.3 was SR free).
Still, my solution is not a 'workaround', it's a legit way to remove a piece of software that is redundant on your system.
FYI, I too know my way around an OS, which is how I know the process required to remove SecuRom. Wanna Dance?:p