*Omnidirectional means that the ship has a weapon that is usually forward facing, but converted into a weapon that can fire at all angles and all degrees. A nice example would be the Ranx dreadnought, as it has a kiloton cannon that fires at you wherever you are.
This means that playerships do not have the same type of omnidirectional weapons as NPCs have, as when the kiloton cannon is equipped, it is only forward firing.
The following weapons are always omnidirectional, and can be installed in the player ship. They are useful for the slow-turning EI500, and for players who have difficulty aiming.