A missile boat or missile cutter is a small, fast warship armed with anti-ship missiles. Being smaller than other warships such as destroyers and frigates, missile boats are popular with nations interested in forming a navy at lower cost. They are similar in concept to the torpedo boats of World War II; in fact, the first missile boats were modified torpedo boats with the torpedo tubes replaced by missile tubes.
The doctrine behind the use of missile boats is based on the principle of mobility over defence and firepower. The advent of proper guided missile and electronic countermeasure technologies gave birth to the idea that warships could now be designed to outmaneuver their enemies and conceal themselves while carrying powerful weapons.
Previously, increasing the potency of naval artillery required larger projectiles, which required larger and heavier guns, which in turn called for larger ships to carry these guns and their ammunition and absorb their recoil. This trend culminated in the giant battleships of World War II. Even as World War II was taking place, submarines and aircraft, particularly those launched from aircraft carriers, had made it clear that large warships were little more than targets in a major war. Guided bombs and then anti-ship missiles further reduced the usefulness of large warships outside the carriers.
Missile boats, when equipped with sophisticated anti-ship missiles, and especially when used in a swarm, can pose a significant threat to even the largest of capital ships, and do so at much greater ranges than is possible with torpedoes.
Missile boats were invented and first manufactured by the Soviet Union in the 1950s, beginning with "Project 183R" which developed into the Komar-class missile boat, mounting two P-15 Termit (Styx) anti-ship missiles in box launchers and a twin 25mm autocannon on a wooden hull displacing Four diesel engines gave the Komars and a top speed of around . Endurance was limited to at and the vessels had fuel and supplies for only five days at sea.
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right|thumb| Navire d’attaque rapide de classe Gepard de la Deutsche Marine. right|thumb|Bateau lance missile de classe Hamina des Forces maritimes finlandaises. Les navires d’attaque rapide (de l’anglais Fast Attack Craft abrégé FAC) sont des navires de guerre petits, rapides, vouée à l'offensive, armés de missiles anti-navires, armes à feu ou torpilles. Ils sont généralement utilisés à proximité de la terre car ni leur tenue en mer, ni leur capacité d’emport de munitions défensives ne leur permettent de survivre dans des eaux lointaines.
Un patrouilleur est un bateau mis en œuvre par une marine militaire, douane, garde-côtière, police ou administration civile d'un État pour assurer différentes missions de souveraineté notamment dans ses eaux intérieures ou son domaine maritime. Elles incluent des fonctions aussi variées que la police des pêches et de la navigation, la surveillance et la lutte anti-pollution, la répression de la piraterie, de la contrebande et des trafics illicites, la régulation de l'immigration, la recherche et le sauvetage en mer, ainsi que la lutte contre les activités armées de faible intensité, telles que la guérilla maritime ou le terrorisme.
Naval tactics and doctrine is the collective name for methods of engaging and defeating an enemy ship or fleet in battle at sea during naval warfare, the naval equivalent of military tactics on land. Naval tactics are distinct from naval strategy. Naval tactics are concerned with the movements a commander makes in battle, typically in the presence of the enemy. Naval strategy concerns the overall strategy for achieving victory and the large movements by which a commandant or commander secures the advantage of fighting at a place convenient to himself.