rear - Ecuadorian 25 DE JULIO E-12 (Ex. Enright APD-66, Ex. DE-216)

front - USS Grampus (SS-523)

USS Grampus "battle surface" with Ecuadorian 25 DE JULIO E-12 
in the background... as I recalled,  we came up between two lines 
of ships stationed about 200 yards abeam of each other....and 
hoped no one on the surface had a reason to close the gap!