Why are speedboats called "marine light cavalry"? How fast can it go?

In international trade, bulk goods such as oil and coal are generally transported by sea, because ships have a deep draft tonnage and the transportation cost is low. But they are bulky, time-sensitive, and have no advantage in short-distance transportation. So people invented yachts. There are two kinds of yachts at sea, military and civilian, and the price ranges from thousands to hundreds of thousands. In military affairs, compared with aircraft carriers and submarines, sea yachts are inconspicuous, compact and convenient in naval operations, and even used as people's daily means of transportation. What role does yacht play in naval operations? Why is it called marine light cavalry? So what role does a yacht play in naval operations? Why is it called a marine light cavalry?

cavalry is the most elite unit in ancient combat, which is divided into heavy cavalry and light cavalry. Chinese cavalry sacrificed a series of attacks, such as speed advantage, full-body armed armor, enemy arrows, beheading, throwing stones, etc., similar to western medieval knights. Light cavalry, without armor, is quick and agile, quick and successful, and is good at surprise attack. It is generally used in the front line of charge and quickly destroys the enemy formation. There are two kinds of yachts at sea: torpedo boats and missile speedboats. They are cheap to make, fast, on call, convenient and fast, and the maximum speed can reach 6 knots. Small tonnage, strong concealment, not easy to be detected by the enemy. It can take radar detectors to get enemy information quickly. Yacht can play an important role in naval combat system, because it can carry deep-sea torpedo bombs and missiles to attack enemy camps.

Yachts are the "sprint champions" among warships, with a maximum speed of 4-6 knots, so they are called "marine light cavalry". Yachts are classified according to the weapons equipped, including torpedo boats and missile torpedo boats. Although the yacht is small, its power is not small and it plays a great role. For large and medium-sized enemy ships invading the offshore area, torpedo boats and missile boats can attack alone or together with other surface ships to destroy the invading enemy's large and medium-sized ships. You can also send yachts to attack the enemy's transport ships and destroy the enemy's maritime traffic lines. Yachts are fast and boats are small, so they can be hidden and effectively attack enemy bases and berths suddenly. Speedboat supports can be used in shallow water channels, narrow sea areas and reef areas. The most powerful missile boat in yachts inherits the advantages of torpedo boats and occupies a very important position in naval battles. However, compared with large and medium-sized ships, they have weak self-defense ability and poor resistance to wind and waves, so they can only fight in the offshore.

Modern speedboats are widely used in missile weapons, sophisticated miniaturized electronic equipment, high-power combustion steam turbines, hydrofoils and air cushion technologies, and are developing towards missiles, large-scale, high-speed and electronicization. In the future naval battle, yachts will play a greater role and will provide great help in the military. Each yacht squadron under the Ocean Octopus Brigade has jurisdiction over two detachments, each of which has jurisdiction over five missile speedboats. The whole maritime brigade has 48 seagull class and 2 Israeli original poison bee class missile speedboats. The support squadron is under the jurisdiction of 1~5 teams, and each team supports the maintenance of 1 squadron. The Tide Brigade was originally under the jurisdiction of two "Longgang" class missile patrol ships, which have been assigned to the 212 team of the 131 Fleet. The captain of the sea octopus is a colonel, the company commander is a major, and the captain of "Seagull" is a lieutenant.