I came across this book when looking for submarine stories. With a title of _Spy Sub_, the author had me at two words that make my antenna twitch. Submarines are the primary water platform for sneaking around. The blurb on the back made it out to be something super secret and cool. But this book is far from that.
This is book is barely about the super secret mission. It is more about the author being an enlisted nuclear reactor operator on an aging submarine & his quest for the coveted dolphins. Most of which is dull or annoying. If you have read a couple other stories about life on submarines, this is more of the same. We get to learn more about how he met his wife on a beach in Hawaii than any past secrets. It gets really bad when he is recounting his defence of the Vietnam war to his family, regurgitating the party line of fighting Communism. Which is all wrong, but the author never once wants to demonstrate he has ever had second thoughts about being used (I'm in the middle of HR McMaster's book on the Vietnam war that details just how stupid it all was).
The super secret mission that we are promised? I had heard about the use of a former Regulas-class sub that used "fish" to photograph the seabed, looking for things. They were looking for a lost Soviet sub that went down. At the time, the ability to take photos and bring the film back from 15,000 feet down was a huge deal. They didn't wants the USSR to know the US had the ability to hear through the SOSUS network, which would then allow for knowing where to look.
As an avid reader of submarine stories, this book provides nothing new. I fault the publisher for building up the idea that something previously secret would be revealed, but that isn't true. It is just a memoir of a guy who worked on a sub and met his wife on a beach.