What was the naval blockade designed to prevent?

The naval blockade was primarily designed to prevent the movement of goods, supplies, and military resources into or out of a specific area, typically to weaken an adversary's economy and military capabilities. For instance, during the American Civil War, the Union implemented a blockade to restrict the Confederacy's access to arms and trade. Similarly, during the Cuban Missile Crisis, the U.S. established a naval blockade to prevent Soviet ships from delivering missiles and military equipment to Cuba. Overall, such blockades aim to exert pressure and limit the operational capacity of the targeted nation or group.