Miracles on the Water by Tom Nagorski
This book comes highly recommended. I just ordered it. I was told to have a tissue close by.
Here are the Publisher's notes....
"Based on eyewitness accounts of passengers, crew, and rescuers, a remarkable chronicle of survival at sea describes the German submarine attack on the passenger liner S.S. City of Benares, a ship carrying ninety children from war-ravaged Britain to the safety of Canada, and the ordeal of survivors, battling the harsh waters of the North Atlantic."