HM Coastguard said it was “reasonably” confident that four men who were aboard the boat got off safely.
Detective Sergeant Mark Bamber said: “We believe that the boat came into the area yesterday and entered the water in Conwy. The boat is called Phoenix Hardy.
“We are appealing for the owners or the people who have any knowledge of the boat to contact North Wales Police on 101 quoting reference number A039123.”
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