ECHO I** class SSN

 0 NUCLEAR-PROPELLED ATTACK SUBMARINES (SSN)

 Completed           1960-1962
 Converted to SSN    1970-1974

The ECHO I class were former cruise-missile submarines that carried six SS-N-3c Shaddock ** missiles. They lacked the Front**-series radars and other features of the JULIET** SSG and ECHO II** SSGN classes that would permit them to launch the anti-ship versions of the Shaddock (the ECHO I was originally designed to launch the land-attack version). After a decade of...