Each year is divided into two halves (January through June and July through December)

1861 January - June       1861 July - December
1862 January - June     1862 July - December
1863 January - June     1863 July - December
1864 January - June     1864 July - December
1865 January - April    
1861-1865
(718kb Zipped Word document)

Civil War Naval Chronology 1861-1865
Published 1966 by Naval History Division , Office of the Chief of Naval Operations , Navy Department , Washington D.C.

Entries in blue are information concerning submarine warfare derived from Mark Ragan's book.