Mr Ryan, his twin brother, Aiden, and a friend, Tony Evans, 19, all tried to swim the two miles to shore in their life jackets after the 16-foot cabin cruiser's engine failed. The three men, from Penmaenmawr in North Wales, had left on a fishing trip on Saturday.
Aiden Ryan and Mr Evans were picked up by rescuers after five hours in the water, but Mr Ryan later died in hospital. They were found only 200 yards from their drifting boat, near Puffin Island.
Coastguards were puzzled as to why the men had not tried to radio for help. Their radio was switched off. Ray Carson, the Coastguard deputy district controller at Holyhead, said: "Tragically they broke a golden rule by leaving the boat. If they had radioed us at 7pm we would have had them back home by 7.30pm."Reuse content