 She was refitted before Operation Barbarossa , probably about 1940 , her catapult was removed , and her anti @-@ aircraft armament was greatly increased . Her four 76 @.@ 2 mm <unk> AA guns were exchanged for four Italian <unk> twin gun 50 @-@ caliber 100 mm ( 3 @.@ 9 in ) AA mounts and she received four single mounts for the semi @-@ automatic 76 @.@ 2 mm 34 @-@ K were fitted as well as six 12 @.@ 7 mm ( 0 @.@ 50 in ) AA machine guns . Two single mounts for 76 @.@ 2 mm ( 3 @.@ 00 in ) 34 @-@ K guns were also fitted , one on each side of the quarterdeck just aft of the rearmost main gun turret . Some of these guns may have been received earlier , the sources are unclear . While under repair at Poti in late 1942 she landed her aft pair of torpedo tubes and received two more <unk> mounts salvaged from the sunken cruiser <unk> Ukraina . Ten single mounts for the naval version of the 37 mm AA gun was also fitted . By 1944 she was also carrying one quadruple Vickers .50 machine gun MK III mount on top of each of her superfiring main gun turrets and she may have been using Oerlikon 20 mm cannon . 
