Welcome aboard, Clean Sweep!
Always good to have someone new on here to pick on, err, I mean guide and encourage.
Since you have such a love for Balao's, then you need to get your pink primer out and start repainting your boat. Then you need to rename her.
Sea Tiger sounds like a good name.
Like everyone else said, you need to upgrade to 1.5, also known as the U-boat add-on. There are lot of bugs in early versions of the game and it fixes a lot of them. Also the best mega-mods are all written for 1.5.
Don't be afraid to ask questions, we are all happy to offer advice.