A flagship is a warship that is commanded by a commanding officer of a fleet that could be any type of ship that includes a dreadnought or a battleship. A flagship tends to be a Command & Control ship to lead a fleet or squadron.
United Nations
| Designation | Class | Ship type | Appearances | Notes |
|---|---|---|---|---|
| UNN Agatha King | Truman-class | Dreadnought | Books | UNN Fleet Command Flagship commanded by Admiral Nguyễn and taken to Jovian moon Io |
| TV | UNN Jupiter Fleet Flagship commanded by Admiral Souther and taken over by Admiral Nguyễn and sent to Jovian moon Io | |||
| UNN Okimbo | Books | UNN Jupiter Fleet Flagship commanded by Admiral Souther over Jovian moon Io | ||
| UNN Thomas Prince | Xerxes-class (Books) Truman-class (TV) | Battleship (Books) / Dreadnought (TV) | TV and Books | Flagship of the UNN task force sent to investigate the Ring |
Martian Congressional Republic
| Designation | Class | Ship type | Appears | Notes |
|---|---|---|---|---|
| MCRN Donnager | Donnager-class | Battleship | Books and TV | Flagship of the MCRN's Jupiter Fleet before destruction |
| MCRN Icaria Planum | TV | Flagship of the MCRN Saturn Fleet | ||
| MCRN Barkeith | Books and TV | Flagship of the MCRN Home Fleet | ||
| MCRN Schiaparelli | TV | Current Flagship of MCRN Jupiter fleet |
Outer Planets Alliance
| Designation | Class | Ship type | Appears | Notes |
|---|---|---|---|---|
| OPAS Behemoth | Behemoth-class | Dreadnought | Books and TV | Flagship of the Tycho station/Ceres Station OPA fleet |
| Designation | Class | Ship type | Appears | Notes |
|---|---|---|---|---|
| Pella | Corvette-class | Fast-attack frigate | Books | Marco Inaros's personal Flagship |
Laconian Empire
| Designation | Class | Ship type | Appears | Notes |
|---|---|---|---|---|
| Heart of the Tempest | Magnetar-class | Battlecruiser | Books | Flagship of the Laconian Expeditionary Force |
| Eye of the Typhoon | Magnetar-class | Battlecruiser | Books | Flagship of Laconia Home fleet until transfer to Slow Zone |