Complex sentence: In the summer of 1863 she joined the South Atlantic Blockading Squadron and took station off Morris Island inside Charleston Bar, where she served as flagship of the inner blockade until she sailed into the harbor after the evacuation of Charleston in February 1865.
Split into simpler sentences: In the summer of 1863 she joined the South Atlantic Blockading Squadron and took station off Morris Island inside Charleston Bar. There she served as flagship of the inner blockade until she sailed into the harbor after the evacuation of Charleston in February 1865.