ship-unstealthy ship-unstealthy Causes the ships listed in this sexpression to become non-stealth ships (i.e. visible to radar). Takes 1 or more arguments... All: Name of ships to make non-stealthy.
Besides the obvious, this and ship-stealthy can be use to simulate various kinds of sensor and targeting problems by repeatedly stealthing and unstealthing enemy ships as they are targeted by the player. A example of how to do just that is available here.