Police divers are to resume their search this morning around the wreckage of the Tullymurray Lassoff the Co Down coast.
Three generations of a family of Co Down fishermen - Mr Michael Greene (54), his son (32) and grandson (8), both named Michael - were on board when the vessel sank on a fishing trip last February.
Visibility for the divers is reported to be poor and it is expected to take some time before a salvage operation is attempted.
The 10-metre vessel was found on the sea bed several miles off Kilkeel harbour last month.