...who served on the USS Seapoacher (SS-406).
Not making this up. I recieved "Silent Victory" from Amazon today and I was showing it to a co-worker who was in the Navy. To my surprise he told me that he served on the USS Seapaocher - a Balao class sub - in the early 80's.
How is that even possible you might ask? Well his name is Diego and he served in the PERUVIAN navy before he emigrated to the US.
I looked it up and sure enough the Seapoacher was sold to Peru in 1975 and served until 1995 as the
La Pedrera. 
Talk about built to last!
http://en.wikipedia.org/wiki/USS_Sea_Poacher_(SS-406)#BAP_La_Pedrera_.28S-49.29
Barkhorn.