Kvakeri (Croakers)
Referenced in 1 episode
Definition
The Soviet Navy's name for unexplained underwater acoustic signals, sounding like croaking frogs, that seemed to follow and circle nuclear submarines during the late 1960s–1980s.
Referenced in 1 episode
The Soviet Navy's name for unexplained underwater acoustic signals, sounding like croaking frogs, that seemed to follow and circle nuclear submarines during the late 1960s–1980s.