Meanwhile, presuming you are the lone Lynx, sorry Wildcat, on the Frigate, who is out doing your job?
The RN website talks about the aircraft going out, presumably BVR, and being on station for 1 hour - that would mean less than 30 mins out and back to allow for MLA and therefore (allowing minimum time for refuel and pee) that there will be periods in excess of 1 hour where there is no helo patrolling - ie a one to one basis.