Equipped with the latest electronic listening devices, Georgetown sailed for shakedown at Guantanamo Bay, Cuba, on 21 January 1964. She was reclassified AGTR-2 on 1 April 1964 and began her operational service on 13 April.
Georgetown embarked on a testing voyage equipped with the latest electronic surveillance gear to Guantanamo Bay, Cuba, on January 21, 1964. Following a reclassification as an AGTR-2 ship on April 1, she began her active service on April 13.