General Winfield Scott is credited with the basic blockade plan, with vital input from Secretary of the Treasury Salmon P. Chase and Secretary of the Navy Gideon Wells. Prioritizing the blockade plans was important as the US Navy constructed more than 500 new ships during the Civil War.
At the beginning of the US Civil War, the US Navy created two blockading squadrons to hamper Rebel ports. One squadron was assigned for the Atlantic East coast and other one to cover the Southern Gulf coast. When the Blockade Board was formed, it divided the two squadrons into four squadrons. The Board believed this reconstruction of naval responsibilities would serve to better serve the Union's blockading policy.
194 Ships in the blockade fleet.
The blockade prevented needed supplies from coming in, and cotton from going out
The blockade was more effective toward the end of the war.
The blockade stopped the south from importing and exporting goods to other areas.
Blockade
Yes, the blockade, specifically referring to the Union blockade during the American Civil War, effectively ended shortly after the war concluded in April 1865. With the defeat of the Confederacy, the enforcement of the blockade was no longer necessary. The blockade had aimed to restrict the Confederacy's trade and supply lines, and once the war was over, the focus shifted to rebuilding the nation.
The civil war blockade was when the Navy covered the Southern's coast so that no one could get through. The South could not trade and they could not get supplise or food or even money.
They hired privateers as blockade runners. Unfortunately, any ship quick enough to evade the blockade could not carry much cargo.
Blockade
Captain Samuel Francis Du Pont was the chairman of the Blockade Strategy Board (aka the Du Pont Board) from June 25, 1861 until the end of hostilities in 1865. He was the Commandant of the Philadelphia Navy Yard. The 4 permanent members of the board were Du Pont, CDR Charles Henry Davis, Major John Gross Barnard (Army Corps of Engineers), and Alexander D. Bache (Superintendent of the US Coast Survey).
The overall naval strategy of the Union in the US Civil War was to blockade Confederate ports. This would prevent supplies needed to fight the war from entering Southern ports. The blockade also tried to prevent ships laden with cotton bales to reach foreign destinations such as England. The British textile industry had been accustomed to receiving most of their cotton from the Southern US states. The Union's blockade Board coordinated these efforts with good results.