Gavin Reilly stood on the boat deck of the Titanic, his eyes closed tightly. He gripped the handrail and counted to ten. Then he opened his eyes again. He had to get over this. He had to get used to looking out over the open water. After a few dizzying seconds, he turned landward, gulping huge breaths of the cool air. He stared at the coastline and the green hills above Queenstown, Ireland. This was ridiculous. He had been swimming since he was a baby. He had never been afraid...