As commencement of the blockade drew closer on October 23, 1963, in a 10:00 AM ExComm meeting President Kennedy and the ExComm held detailed conversations on which ships were likely to be stopped first, with McNamara identifying Kimovsk. Further, the Secretary of Defense reviewed possible alternatives by which the president could respond if SAMs shot down a U-2.
(69) Following the meeting in Intelligence Plot, the CNO returned to Flag Plot and relayed McNamara's orders to CINCLANT Admiral Dennison, determining which Navy ships would intercept Kimovsk, Gagarin, and Poltava.
Moreover, although sporadic, partisan resistance continued in the Carpathian mountains of Romania until the early 1960s, no major unrest had erupted earlier in Romania after World War II, particularly one forcing the communist leadership to implement reforms, unlike in East Germany and Czechoslovakia in 1953, in Poland in 1956, in the Russian Soviet Republic (Noril'sk and Vorkuta in 1953, Novoshakhtinsk and Kimovsk
in 1955), in the Soviet Republic of Kazakhstan (Kengir in 1954, Ekibastuz in 1955), and Tbilisi, Georgia in March 1956.
they [Anderson and Dennison] decided that they should go after the Soviet vessels Kimovsk and Gagarin, effecting contact at about the same time on the 24th.
According to CIA, the latest "known position" for Kimovsk was roughly three hundred nautical miles (nm) east of the planned quarantine line, as of 3 AM Washington time.