| Name of Flag | Position* | Description |
| CAN_LAND | 7 | Ship can land on a planet. |
| DISABLED | 5 | Ship is disabled. |
| INVINCIBLE | 1 | Ship is invincible. |
| NAKED | 4 | Ship's shields are inoperable. |
| PACIFIST | 6 | Ship cannot use weapons. |
| POKEY | 3 | Ship's warp costs twice as much. |
| SPEEDY | 2 | Ship's warp costs nothing. |
* Position indicates the character position of the flag in the ST_SHIPFLAGS bit map, from the left.