If it is a mod, it should typically be installed using JSGME (JoneSoft Generic Mod Enabler) to avoid breaking the base game files.
Because this file name is often found on third-party file-sharing sites (suggested by the "Datoteka" prefix), always scan it with updated antivirus software before extracting.
The original game often struggles with modern resolutions. If you install it, you will likely need a WideScreen Fix or the 4GB Patch to prevent crashes on high-end PCs.
Unlike scripted missions, the game features a "living" ocean where shipping lanes and enemy patrols change based on the date and historical events.
A file named Silent.Hunter.III.zip usually contains one of three things: