An intensive search of an area in Glandore Harbour where a lot of the debris from the sunken Tit Bonhomme washed up has yielded no results.
Over 350 people took part in today's search, with 77 civilian divers in addition to the 15 navy and garda divers.
It is set to continue again tomorrow.
Two fishermen are still missing since their trawler sank off the west Cork coast on January 15.
The bodies of crew members, Attea Shaban (26), Kevin Kershaw (21) and Wael Mohammed (35) were recovered.