You're going to say "Oh please..." when I give you mine but here it is:
Fatal Voyage by Dan Kurzman. I couldn't STAND to put it down. My mother, who never read books read it and loved it. She loaned it to her brother and he couldn't shut up about it. A review from Amazon.com:
"Quint couldn’t have told it better...
The best scene in the movie "Jaws" is when captain Quint, played by Robert Shaw, recounts the horrors of having been a survivor of the USS Indianapolis disaster. In Dan Kurzman, this event is given a storytelling treatment worthy of the man who would soon become shark bait himself. The Indianapolis story is a horror not only because of what the survivors of the sinking endured (dehydration, delirium and, of course, shark attacks), but because of the bureaucratic bungling that caused them to be left in the water for many days beyond when the sinking was first reported. Granted the war was in its last stages and important things were happening (the Indianapolis was returning from having delivered the Atomic bomb that was dropped on Hiroshima) but the neglect the ship's survivors received was inexcusable. Kurzman is an excellent journalist and writer. This book and "Left to Die" his account of the sinking of the USS Juneau, are first rate accounts of nautical disaster."
I've read this book three times and still it grabs me and breaks my heart. It's true, real-life, first rate suspense.