What is the caliber of the largest caliber naval gun currently equipped by China Navy? What is the largest caliber naval gun in history?

In addition to some warships built in the early days, the old-fashioned double-tube manned 100mm naval gun is still used, and the "modern" class guided missile destroyers imported from Russia use double-tube 130mm naval gun.

China navy destroyers, frigates, speedboats and other ships all have standard main guns with calibers of 100mm and 76mm, and the old models are unknown. The new compact 100mm and 76mm main guns are based on French navy 100mm naval guns and Italian Otto and Melella naval guns respectively.

The 100mm main gun has been able to launch infrared guided rockets with extended range, which is very suitable for dealing with enemy coastal fortifications.

China's small-caliber naval guns are mainly Russian AK630 6-tube 30mm anti-aircraft guns, referring to the 730 near-defense weapon system (7X30mm) produced by the Dutch signal company "Goalkeeper" system and the old-fashioned double-tube 37mm anti-aircraft guns.

The largest caliber naval gun in world history belongs to the 460mm main gun of Japanese battleships Yamato and Musashi in World War II. A volley can make a 64,000-ton warship retreat 10 meter, and a shell weighs 1.4 ton.