I read this because, although I have been surrounded by news of the BP oil spill due to my location in Louisiana, I have never read a start to finish account of the whys and hows of this disaster.
It was very readable, and was a very thorough start-to-finish account, starting with the building of the Horizon rig in Korea, and continuing up through the explosions and rescue of the survivors. The epilogue finishes off the biographies of a few of the main characters in the book.
The end of the book is in fact the only bad thing about it. The book ends oddly and abruptly, as though the last chapter was submitted at the very print deadline, and there was no time to add any more.
Anyway, recommended if you're looking for a quick, readable account of the 2010 Gulf oil disaster.