Developed by General Scott, the Anaconda Plan was Scott's plan to blockade the Southern Coast and then go up around Texas and down the Mississippi into into Southern territories wreaking havoc and destruction as it was slowly getting strangled off from commerce.
The general idea was that if one was to blockade the South's coasts, you'd be able to keep them from getting supplies.
Historians have not been kind to the Anaconda Plan, commenting on the misidentification of the South's supply chains and what was actually necessary to cripple the Southern economy.