The list of ship launches in 1866 includes a chronological list of some ships
launched in 1866.
| Date | Country | Builder | Location | Ship | Class / type | Notes |
|---|---|---|---|---|---|---|
| Unknown | United States | Thomas Arnold of Gallagher & Company | Marine City, Michigan | Alpena | Paddle steamer |
| Ship events in 1866 | |||||||||||
| Ship launches: | 1861 | 1862 | 1863 | 1864 | 1865 | 1866 | 1867 | 1868 | 1869 | 1870 | 1871 |
| Ship commissionings: | 1861 | 1862 | 1863 | 1864 | 1865 | 1866 | 1867 | 1868 | 1869 | 1870 | 1871 |
| Ship decommissionings: | 1861 | 1862 | 1863 | 1864 | 1865 | 1866 | 1867 | 1868 | 1869 | 1870 | 1871 |
| Shipwrecks: | 1861 | 1862 | 1863 | 1864 | 1865 | 1866 | 1867 | 1868 | 1869 | 1870 | 1871 |