"B-2LM" is a 130 mm two-gun naval artillery

Naval artillery

Naval artillery, or naval riflery, is artillery mounted on a warship for use in naval warfare. Naval artillery has historically been used to engage either other ships, or targets on land; in the latter role it is currently termed naval gunfire fire support...

 turret, based on the "B-13

130 mm/50 B13 Pattern 1936

The 130 mm/50 B13 Pattern 1936 was a 50 caliber Soviet Union naval gun. The gun was used as a standard destroyer weapon during World War II, and it was also used as a coastal gun and railway gun. The gun was produced in three different versions which all had mutually incompatible ammunition and...

" ("Б-13") gun. Production started in 1939. "B-2LM" was established on several Soviet ships, including the destroyer leader Tashkent

Tashkent class destroyer

The Tashkent Class were a group of destroyer leaders built for the Soviet Navy just before World War II. Only one ship was completed.The first ship, Tashkent was ordered under the second Five Year Plan, from the Italian OTO company of Livorno in 1935. She was considerably larger and more capable...

. 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

• Gun caliber 130mm (5.1 inch)
• Barrel length: 50 calibers, 6.45 m
• Maximum laying speed: vertical - 9.85 degrees per min, horizontal - 9.7 degrees per min
• Rate of fire: 12 shots per min
• Shell weight: 33.5 kg (74 lbs)
• Initial velocity of the shell: 870 m/s
• Range: 25,597 m