We need a bit more information, please. What is the install "path" to your game? Said another way: "Where is the game installed on your hard drive?" Did you empty the Save folder (C:\Users \UserName \Documents \SH4) prior to starting to play the modded game? Do you have any other mods added besides the FotRSU mod? If you do, can you open JSGME, use the middle "Tasks..." link in JSGME, then choose "Export activated mods list to -->" and choose "Clipboard". You can then paste that into your next post. Also, is it during dark hours, or a storm when you are having the failure to alarm with a "Ship spotted..." message? Is the ship friendly or enemy?