What kind of firepower is installed on the ships of the coast guards of various countries? 130mm rapid-fire gun? Harpoon missiles. What about our country?

Usually equipped with high-pressure water cannons. For example, the coast guard of the United States is also equipped with light weapons, such as pistols and M 16 rifles. Some large marine police vessels are equipped with 76 mm caliber naval guns. China's latest 10,000-ton marine police enforcement ship is equipped with a 76-mm naval gun, but compared with neighboring countries, law enforcement ships with a tonnage of more than 1000, such as the Japan Coast Guard, all have naval guns, usually small-caliber rapid-fire guns of 20-40 mm, and the Japan Coast Guard currently has more than 500 patrol boats and 75 aircraft with various purposes, of which 7 175 tons are Fukushima. There are 0/3 patrol boats capable of carrying helicopters, 22 large patrol boats and 39 medium patrol boats, and their comprehensive strength far exceeds that of China. Even in South Korea, in recent years, not only have coast guard boats with tonnage exceeding 1000 tons and large ships capable of carrying helicopters been vigorously built, but also a 5,000-ton large patrol ship named "Sanfeng" has been built, which can carry 1 helicopter.