So not close to 15 then...........
No, not 15 yet even if you are considering these numbers to be small there is at least one of those ops that the 189 simply won't be able to do, the others would be very dependent on range to the vessel. The current aircraft can perform all of those ops in SAR or HEMS role and throughout the entire Irish EEZ. So, in the real world the S92 can do the job while the 189 won't be able to do some of it and is limited on the rest, in the theoretical world of 15 the S92 can still do the job covering the entire area required while the 189 can't.