"B-2LM" (Russian: "Б-2ЛМ") is a Soviet 130mm two-gun naval artillery turret, based on the "B-13" ("Б-13") gun. Production started in 1939. "B-2LM" was established on several Soviet Navy ships, including the destroyer leaderTashkent, the Ognevoy-class destroyer (Project 30 and 30K), and the Skory-class destroyer (Project 30bis). However, it had a relatively low rate of fire and had a maximum elevation of 45 degrees making it incapable of anti-aircraft fire.
General characteristics
Maximum laying speed: vertical - 9.85 degrees per second, horizontal - 9.7 degrees per second
Range testing occurred in two phases with 240 firings, the first from 4 December 1940 until 27 January 1941 (55 days) and the second from 27 April to 27 May 1941 (31 days), totalling 86 days of testing. During testing, the B-2LM performed well and was nominated for service, with three turrets finally being installed on the destroyer leaderTashkent by 8 July 1941, in place of the 130 mm B-13 naval gun. Tashkent would later undergo state ship trials in Sevastopol Bay in July 1941, bearing the new armament.[1]
