Book excerpt: The concepts of vulnerability assessment and reduction have long been employed in the design of military aircraft. Aircraft design has many similarities to the design of small surface craft. Both disciplines deal with minimal recoverability and limited space, space that is crucial for critical component redundancy, separation, and many other principles of vulnerability reduction. This report attempts to directly apply established aircraft vulnerability assessment and reduction techniques to small surface craft, in particular, the Cyclone-class Patrol Coastal craft.