Here is a rough model based off USN SSN-700 Fast Attack Sub. I made this bc I couldn't find a basic easy to print model for a friend. I attached the SW2012 parts if you want to modify it. I have printed it scaled up to 250% with no problems. Please post comments if you need a mod or anything.
Printer:
Prusa/mendel I2
Rafts:
No
Supports:
No
Resolution:
.15-.25 layer height
Infill:
5-15%
Notes:
I printed in halves and they turned out really well.
