Started quite well, but was spoiled for me by the authors apparent ignorance when it came to technical matters. Particularly towards the end of the book when the protagonists were attempting to escape on an 80ft racing sailboat. At that point the errors came thick and fast, as anyone who has done any sailing would be quick to notice. If one has no such knowledge, no doubt many will find it to be quite an entertaining book.
Having said that, I didn't find the villain of the story, a character by the name of Janac, very believable. His single minded pusuit of the good guys, without any apparent reason, seemed a little far fetched to say the least.