The list of ship decommissionings in 1884 includes a chronological list of all ships decommissioned in 1884.
| Date | Operator | Ship | Pennant | Class and type | Fate and other notes | Ref |
|---|---|---|---|---|---|---|
| October 6 |  United States Navy | Nantucket | Passaic-class monitor | Placed in reserve until recommissioned in 1884 | [1] |
Ship commissioning is the act or ceremony of placing a ship in active service and may be regarded as a particular application of the general concepts and practices of project commissioning. The term is most commonly applied to placing a warship in active duty with its country's military forces. The ceremonies involved are often rooted in centuries-old naval tradition.
A corvette is a small warship. It is traditionally the smallest class of vessel considered to be a proper warship. The warship class above the corvette is that of the frigate, while the class below was historically that of the sloop-of-war. The modern types of ships below a corvette are coastal patrol craft, missile boat and fast attack craft. In modern terms, a corvette is typically between 500 tons and 2,000 tons, although recent designs may approach 3,000 tons, which might instead be considered a small frigate.
Five United States Navy ships have borne the name Atlanta, after the city of Atlanta, Georgia:
The first USS Pensacola was a screw steamer that served in the United States Navy during the U.S. Civil War.
USS Nina was a United States Navy steamer commissioned in 1866. She served in a variety of roles — as a tug, torpedo boat, torpedo boat tender, salvage ship, supply ship, and submarine tender — before she sank in a storm in 1910.
The Veer-class corvettes of the Indian Navy are a customised Indian variant of the Soviet Tarantul class. They form the 22nd Killer Missile Vessel Squadron.
Two ships of the Royal Norwegian Navy have borne the name HNoMS Gor, after Gór – the mythological co-founder of Norway:
Several ships of the Argentine Navy have been named La Argentina, with or without the prefix "ARA".
| Ship events in 1884 | |||||||||||
| Ship launches: | 1879 | 1880 | 1881 | 1882 | 1883 | 1884 | 1885 | 1886 | 1887 | 1888 | 1889 |
| Ship commissionings: | 1879 | 1880 | 1881 | 1882 | 1883 | 1884 | 1885 | 1886 | 1887 | 1888 | 1889 |
| Ship decommissionings: | 1879 | 1880 | 1881 | 1882 | 1883 | 1884 | 1885 | 1886 | 1887 | 1888 | 1889 |
| Shipwrecks: | 1879 | 1880 | 1881 | 1882 | 1883 | 1884 | 1885 | 1886 | 1887 | 1888 | 1889 |