The list of ship decommissionings in 1919 includes a chronological list of all ship

Ship

Since the end of the age of sail a ship has been any large buoyant marine vessel. Ships are generally distinguished from boats based on size and cargo or passenger capacity. Ships are used on lakes, seas, and rivers for a variety of activities, such as the transport of people or goods, fishing,...

s decommissioned in 1919.

! width="90" |
! style="text-align: left; background: #aacccc;"|Operator
! style="text-align: left; background: #aacccc;"|Ship
! style="text-align: left; background: #aacccc;"|Class and type
! style="text-align: left; background: #aacccc;"|Fate
! style="text-align: left; background: #aacccc;"|Other notes
|-----
! style="background: #bbdddd;"| 21 January
|
| Glyndwr
| Converted merchant type auxiliary hulk
| Surrendered to the United Kingdom
| Became SS Akenside
|-----
! style="background: #bbdddd;"| 31 March
|
| Iowa

USS Iowa (BB-4)

| The second half of the 19th century saw radical changes in shipbuilding design. Wood-built sailing ships with cannons were replaced by steam-powered warships armored with steel...

| Battleship
| Used as a target ship
|
|-----
! style="background: #bbdddd;"| 5 November
|
| Stuttgart

SMS Stuttgart

SMS Stuttgart was a Königsberg class light cruiser of the Kaiserliche Marine, named after the city of Stuttgart.-Design:The Stuttgart was one of the three light cruisers whose eighth funnel was 'detached', meaning the distance to the central funnel was greater than that between the middle and front...

| Stettin class cruiser
| Stricken
| Surrendered to the United Kingdom as Prize S in 1920
|-----
! style="background: #bbdddd;"| 12 December
|
| A-2

USS Adder (SS-3)

USS Adder , a Plunger-class submarine, was one of the earliest submarines used by the United States Navy. She was laid down on 3 October 1900 by the Crescent Shipyard, launched on 22 July 1901, and commissioned on 12 January 1903 at the Holland yard at New Suffolk, Ensign Frank L...

| Submarine
| Decommissioned
| Former USS Adder
|-----
! style="background: #bbdddd;"| 12 December
|
| A-4

USS Moccasin (SS-5)

The second USS Moccasin was a that was later renamed A-4.She was laid down under the direction of Arthur Leopold Busch on 8 November 1900 in Elizabeth, New Jersey at the Crescent Shipyard, launched on 20 August 1901, and commissioned on 17 January 1903 at the Holland yard at New Suffolk, N.Y....

| Submarine
| Target ship
| Former USS
|-----
! style="background: #bbdddd;"| 12 December
|
| A-6

USS Porpoise (SS-7)

The third USS Porpoise was an early in the service of the United States Navy, later renamed as A-6.She was laid down on 13 December 1900 in Elizabeth, New Jersey at the Crescent Shipyard under the direction of shipyard superintendent, Arthur Leopold Busch...

| Submarine
| Target ship
| Former USS Porpoise
|-----
! style="background: #bbdddd;"| 12 December
|
| A-7

USS Shark (SS-8)

The third USS Shark was an early Plunger-class submarine in the service of the United States Navy, later renamed as A-7.Shark was laid down on 11 January 1901 at Elizabethport, New Jersey in the Crescent Shipyard under the direction of Crescent's superintendent, Arthur Leopold Busch...

| Submarine
| Target ship
| Former USS Shark
|-----
! style="background: #bbdddd;"| 18 December
|
| Oswald
| Converted merchant type seaplane carrier
| Surrendered to the United Kingdom
| Became SS Eian Maru
|-----
! style="background: #bbdddd;"| Date unknown
|
| Answald
| Converted merchant type seaplane carrier
| Surrendered to the United Kingdom
| Became SS Vulcan City
|-----
! style="background: #bbdddd;"| Date unknown
|
| Santa Elena
| Converted merchant type seaplane carrier
| Surrendered to the United States
| Became SS Santa Elena