Stock used the F12 key. Others use F9 for the Captain's Panel. You could try the "K" key to go directly to the Log, if it hadn't been changed in the key codes. Look for a "SH4_Q-Ref_Card_Front.jpg" and "SH4_Q-Ref_Card_Back.jpg" files in the game's root folder, and see if they updated it for the mod.