What the name of the union plan to keep southern ships from arriving at or leaving their harbors?

The Union plan to block Southern ships from arriving at or leaving their harbors was called the Anaconda Plan. This strategy aimed to suffocate the Confederate economy by implementing a naval blockade, preventing the South from exporting cotton and importing supplies. The plan sought to divide the Confederacy by gaining control of the Mississippi River, ultimately aiming for a gradual and effective strangulation of Southern resources.