-Note: This procedure requires editing a game file; creating a backup copy of the file before proceeding is recommended. Enter the "\sh3\data\cfg\careers\" folder. Select the name of the folder that is the same as the career that you are using. Use a text editor to edit the Microsoft Office Outlook config file in that folder. Scroll down to your last mission details and change the amount of reowns that you got paid. Save the file and start the game. You can now purchase the biggest and hardest subs in the game.
-Note: This procedure requires editing a game file; creating a backup copy of the file before proceeding is recommended. Enter the "\ubisoft\silenthunterIII\data" folder. This folder contains all the information on the subs, ships, ammo, etc. Look through the folders. To make aircraft less dangerous, go into "air" and into the aircraft folder. Find the ".eqp" file, and delete it. This removes the bombs, etc. which the plane carries. In the "sea" folder is all the information about surface ships. Delete the equipment files for all the allied warships and cargo ships. This makes the ships completely non combatant. The only thing to watch out for is being rammed. In the "cfg" folder, find "Basic". Open it with a text editor and scroll down. In that file is the bonus renown you receive from the naval academy, the costs of the upgrades and new subs, and the loadout of the subs. Edit the values as desired.