This technology allows subs to defend at 3.
|NGE||0||3||2||8||Does not participate in normal naval combat. If surface ships start, pass through or end in area with the subs, the defending subs fire at 2, then surviving surface ships (& carrier-borne aircraft) fire back using their attack strengths. There is only 1 round of combat. Subs do not stop movement or attack each other.|