Linux is preferred due to its basic properties of being flexible, reliable system and safe.
US Navy is now using the Linux Kernel to built their most powerful DDG-1000 Zumawat Class Destroyer.
It would hold the capacity of 58 MW of reserve power as per average battle condition.
It has total ship computing environment.
Zumwalt carries 16 pre assembled IBM blade servers.
source: www.techworm.net
