[Wulfmann]

Reece, you should know that one mistake in editing the RND.mis file and it will cause a CTD when you start a patrol.
That is not meant to discourage you but is meant to suggest you make a back up copy of the RND.mis file before you start hacking away.
The RND.mis file is huge when you consider it is about 6MB of short text lines.
The easiest way to do things is with the edit/find window.
Click edit; scroll down to “find” click that and it opens a new box where you can put in any set of letters to look for things. Since you are looking for battleships you can write in Type=11 which when you click “find next” will take you to that line. Now scroll just above that to find the RndGroup main description where the SpawnProbability= line is and increase that up to 100 as you desire.
Do not take what you did for granted.
Look carefully to be sure you did not do something else inadvertently.
After you are done and clicked “save”(note what dates that group runs in) start the game with a career for that time period. If you made a mistake it will CTD, if you did not the patrol will start. (If you made a mistake outside the time of this patrol it may not show up now so be sure to check the different time areas with a start patrol test)
The key is to save (outside the game folder) a good copy of the RND (or SCR) before you do anything.
Wulfmann