194 Ships in the blockade fleet.
Blockade
The blockade stopped the south from importing and exporting goods to other areas.
The Naval blockade
The Naval blockade of Southern ports.
Effective naval blockade of principal ports, and control of the Mississippi River
During the US Civil War, the South had virtually no navy. This prevented them from actively battling with Union ships that were sent to blockade important Southern ports. Instead, they used mines, artillery fortifications and small scale raiding vessels to impede the Northern blockade.
The North Sea
During the Civil War, the goals for the Union were to create a naval blockade on southern ports, gain control of the Mississippi River, and take over the Confederates capitol of Richmond, Virginia.
They had a big enough Navy to blockade the Southern coast, to prevent them exporting their plentiful cotton for war supplies.
At the beginning, the South was totally confident that it would be a short, glorious war, and the blockade would soon be lifted.
A few goals of the north/union to gain control of were the Mississipi river, blockade the Confederate's seaports, and seize Richmond, the Confederate's capital.
During the Civil War, wooden ships were used. The ships the North built were used to blockade the South. The ships the South used were built to outrun the blockade. This all changed when the first ironclad, the Virginia, was made. It was unsinkable at the time. The North answered with the Monitor, and the two ships battled to a stalemate later in the war.