"Ships of Mercy: The Remarkable Fleet Bringing Hope to the Worlds Forgotten Poor"  written by Don Stephens.   

This is a wonderful book telling the story of a charitable organization who ports around the world on a floating hospital caring for some of the neediest people in the world.  It is a story of love and compassion; how a God given idea came to life making a lasting difference to many, providing a sense of hope. Great read!