People park carries next to a base so they can launch aircraft from it and get to a fight in a matter of seconds... or get to the base-to-be-victimized in a matter of seconds.
The CV isn't brought near shore because of the guns... its brought near shore for a short flight.
It would be nice to have seperate groups, but it would do nothing to stop people from parking CVs 1 mile off shore.
AKDejaVu