The U.S. Navy has unique sensing requirements that require the use of non-traditional sensing techniques. Problems of electromagnetic interference (EMI), reliability, and weight have driven the Navy to pursue fiber optic sensors to meet these requirements. This paper presents an overview of fiber optic sensor technology related to Navy shipboard requirements. The different types of sensors as well as a means of interconnecting these sensors are described. In addition, overviews of two areas relating to future shipboard sensing systems are presented: MEMS Sensors and Hybrid Networks.