| France | Italy | Japan | Russia | U.K. | U.S.A. | TOTAL | |
| Battleship | 3 | 3 | 4 | 7 | 13 | 6 | 36 |
| Battlecruiser | - | - | 2 | - | 4 | - | 7 |
| Cruiser | - | 2 | - | - | - | - | 2 |
| Light Cruiser | - | - | - | - | 54 | - | 54 |
| Monitor | - | 10 | - | - | 39 | - | 49 |
| Aircraft Carrier | - | - | - | - | 2 | - | 2 |
| Seaplane Carrier | 4 | 1 | - | 7 | 16 | - | 28 |
| Destroyer | 6 | 28 | 38 | 36 | 329 | 77 | 514 |
| Torpedo Boat | 7 | 32 | - | - | - | - | 39 |
| Sloop | 45 | - | - | - | 134 | - | 179 |
| Minelayer | - | - | 11 | 11 | - | - | 22 |
| Minesweeper | 52 | 37 | - | 8 | 156 | 42 | 295 |
| Submarine | 25 | 46 | 2 | 40 | 98 | 55 | 266 |
| Austria-Hungary | Germany | TOTAL | |
| Battleship | 1 | 6 | 7 |
| Battlecruiser | - | - | - |
| Cruiser | - | - | - |
| Light Cruiser | 3 | - | 3 |
| Monitor | - | - | - |
| Aircraft Carrier | - | - | - |
| Seaplane Carrier | - | - | - |
| Destroyer | 5 | 107 | 112 |
| Torpedo Boat | 21 | 92 | 113 |
| Sloop | - | - | - |
| Minelayer | - | - | - |
| Minesweeper | - | 148 | 148 |
| Submarine | 17 | 346 | 363 |
(1) Most seaplane carriers converted merchantmen One U.K. aircraft carrier coverted from battlecruiser during construction.
Source: John Ellis & Michael Cox, The World War I Databook (with changes).