OK, I have read EVERY Dirk Pitt novel Clive Cussler has written, so I definitely qualify to review his books. I enjoy how Cussler pushes the technological envelope in each new story, even a little over the top; I also enjoy how Dirk Pitt is the ruthless hero (only to baddies, not to beautiful women) we've all wished our movie action heroes could be. If you've read more than one Dirk Pitt novel, you know what I'm talking about. No need to elaborate so as not to ruin it for others less fortunate.
By the way, I appreciate how he writes himself into nearly every novel. Don't criticize - you'd do it too if you knew how to make a living writing.
I enjoyed Sahara immensely. Cussler has a way of getting you to say, "Hmmm...could that be what really happened?"
I usually leave a LOT of room for authors to play with the rules of technology and even the laws of physics now and then.
However, despite Cussler's quality, I can't ignore this one:
If you are dehydrated to the point of death - no, wait, even if you are dehydrated significantly less than to the point of death - you don't simply drink quarts and quarts of water and in a matter of minutes fully recover, shake the dust off, and sally forth on your merry way. Even somewhat dehydrated, you will be on a table with an IV in your arm for several hours. I know this firsthand. Technology is one thing; medical accuracy is another.
A very good book, typical Cussler.