1945 Kalinin had exchanged her 21-K guns for nine additional 70-K guns, of which four were mounted on turret roofs and the others in the superstructure. By 1957 her light anti-aircraft armament consisted of only nine powered twin-gun 37 mm V-11 mounts. Six 39-Yu torpedo tubes were fitted in two triple mountings, one on each broadside. The cruiser could mount rails to carry between 100 and 164 mines and racks for fifty depth charges, but by 1945, she could carry 100–106 mines and she had been fitted with two or four throwers for her 66 depth charges. The Project 26bis and the Project 26bis2 cruisers shared the same armor configuration: the waterline belt, turret, and barbette armor were all thick. The deck was protected by armor plates, while those of the conning tower were thick. Initially built without a sonar, Kalinin received the Lend-Lease ASDIC-132 system, which the Soviets called Drakon-132, as well as the experimental Soviet Mars-72 system by 1945. As built she lacked any radars, but by 1944 she was equipped with British and American Lend-Lease radars as well as Soviet-designed systems. A British Type 291 and an American SG radar were used for air search. A pair of Soviet Yupiter-1 radars were used for main-battery fire control while anti-aircraft fire control was provided by two British Type 282 radars. She was planned to be equipped with a single ZK-2b catapult on the centerline between her funnels with capacity for two Beriev KOR-2 seaplanes, but was completed without the catapult, which could not be shipped from besieged Leningrad in time. In place of the catapult, six 70-K guns were added. The catapult was later installed, with Kalinin conducting sea trials with the catapult and the KOR-2 in 1945. The catapult was removed in October 1947 as radar had superseded the use of aircraft to correct the ship's gunfire. Service Kalinin was one of two Project 26bis2 cruisers, the third pair of the Kirov-class cruisers. She was assembled at the newly constructed Shipyard No. 199, Komsomolsk-on-Amur, as yard number 7, from components built at Shipyard No. 189 in Leningrad. She was laid down on 12 August 1938, launched from drydock on 8 May 1942 and towed down the Amur River to Vladivostok for completion. Her construction was prolonged by late deliveries from factories in European Russia and the poorly built drydock. For example, her propellers had to be shipped