Probably not supposed to revive a nine year old thread, but this still comes up as first result when you google 'trigger maru overhaul free cam' and it is not solved yet. I have been getting back on SHIV these days and been looking for the same thing as I couldn't remember how I did it in the past, so I dug through the files again and here you go.
Activate Free Cam in Trigger Maru Overhaul as follows:
1.a If you already activated the mod Trigger Maru Overhaul on your game installation: Navigate to your game folder, then Data, then Cfg, for example
...\Silent Hunters Wolves of the Pacific\Data\Cfg
1.b If you have not activated the mod yet and want to change the setting for the mod generally to be true right after activating the mod: Navigate to your Trigger Maru
MOD folder, then Data, then Cfg, for example
...\MODS\1_TriggerMaru_Overhaul_2-5\Data\Cfg
2. Open the file
GameplaySettings.cfg with any text editor, for example Notepad
3. In this file the first few entry blocks define the gameplay settings for the different difficulties as controlled by the Mod Trigger Maru - the settings in this file
overrule whatever you set in the menu settings!
The headlines [Easy], [Normal], [Hard], [Realistic] represent the setting you pick on the screen where you enter your captain details and chose a submarine when starting a new career, so edit the respective one you want to play - or all of them.
4. Find whatever realism setting you want to change for whichever difficulty setting. Example: I generally play on realistic difficulty settings, but I enjoy the free cam for looking at my sub in the dawn and taking screenshots, so I go to the block
[Realistic] and change the entry
NoExternalView=true to
NoExternalView=false to unlock the free cam.
NOTE FOR SAVEGAMES:
This does
not affect savegames of already started campaigns. This will only change the behavior in a campaign started fresh after you make these changes. This is because the game creates the file
GameplaySettings.cfg again for each and every savegame.
So, to change this setting
in an existing savegame, go to Documets folder on your main hard drive, to the SHIV folder, and then the cfg folder and the folder of your actual savegame, for example:
C:\Users\YOURUSERNAME\Documents\SH4\data\cfg\SaveG ames\00000003 and
change the same file GameplaySettings.cfg here as well.
Make sure you pick the right savegame folder (the last one named 00000001 or similar) for the savegame you want to edit.
Hope this helps someone else and I'm not the only one still playing SHIV.