DJE
Well-Known Member
IIRC QHM Portsmouth's LNTM regarding a visiting USN aircraft carrier said something like "A vessel entering the exclusion zone will be viewed as a hostile act".The USN definitely has no sense of humor with this regard. Having had several crew killed when a small vessel came up to the USS Cole.
Rumor has it 100 m and 50 cal. This may vary a bit for cigarette boat or centaur. They visit my home waters. The word is get to close they will fire.