Patrol zones can be created for both submarine and surface task forces. Patrol zones are created in one of two ways:
1. Clicking on the map to designate the patrol zone boundaries, or
2. Using a short cut to click a single base or sea hex and having the AI assign patrol boundaries around that hex.
Option #1 is illustrated below.
First - Submarine Triton, on station south of Wake. It is December 7th and the sub does not have a patrol zone set.
