The search for five missing fishermen is reaching a critical stage. A Coromorant helicopter and two coast guard ships have been searching a vast area of ocean off the coast of Liverpool since a distress call was issued Sunday night by the crew members of "Miss Ally". The five young fishermen have been lost at sea in cold waters for approximately 36 hours. Lieutenant Peter Ryan of the Halifax search and rescue centre says the Cormorant helicopter involved in the search had to return to base last night due to poor conditions, but is heading out again today. He says seas were rough and visibility was poor last night as the hunt for the 13-metre boat continued.