Federal naval forces make gains in December by capturing various blockade runners and seizing forts along the coast.
Federal forces seize an important base to be used as a staging area for future operations in the Gulf of Mexico.
The C.S.S. Sumter completes her first raid on U.S. shipping, Federals strengthen their blockade, and a Federal crew takes on Confederate privateers.
President Abraham Lincoln issues an order imposing a naval blockade on ports in the Confederate states.
February 17, 1864 – One of the first submarine attacks in history occurred when a “submersible” Confederate vessel confronted a Federal warship on blockade duty
January 13, 1864 – Rear Admiral John A.B. Dahlgren, commanding the South Atlantic Blockading Squadron, recommended that Federal forces use torpedo boats, like the Confederacy’s