Medium ships refer to those ships which mostly have a balance of speed and firepower in their basic form. Medium ships can equip M1 and M2 size satellites.
Due to a balanced number of slots, these ships are mostly agile and with decent firepower. They can wreck slow ships (like Oblivion) in just a matter of seconds. But they are mostly prone to small and medium missiles, unless weight-reduction modules like Inertial Dampers are added.