This is good as are all of Cussler's books.
Interesting story and premise. More language than I remember with Clive Cussler in past stories. Probably won't read the rest in the series.
I read Cussler's books to "preview" them years ago as he was the only author my son liked. They were wholesome and entertaining, and even if he got the girl in the end, it was subtly noted. No so now. No overt sex but lots of inuendo and references, and as I said, language. I would NOT let my son read this if he was in middle school!!