hkia departure related

Hi. My ferry from zhongshan to the skypier leaves at 10.A.M and it usually takes 70 to 75 minutes to reach the SKYPIER.So going by that I should be at the airport by 11:15 A.M.My flight is scheduled at 13:10.Which gives me just under 2 hours to clear security and passport control.Is that time enough or would I be denied boarding.Please reply as its urgent.Thanks