Safi-class "Analog" submarines are special operations models that surface far away from their targets and literally fill the sky with their extensive compliment of self-destruct drones. Agadir-class "Thorn" submarines are direct combat models armed with long-range cruise missiles. They typically surround their target while remaining undetected, then surface to release their missiles before quickly retreating back below the waves, making their destruction difficult to plan ahead of time.
Although both models have minimal armor, their weaponry can pose a significant threat, particularly when they are attacking critical targets that the player must defend.
By the time of Armored Core: For Answer, the submarine is shown to have lost significant fighting ability in the face of the rapidly evolving combat abilities of the Armored Core NEXT.
- Both classes of submarines appearing in Armored Core 4 derive their names from the Morrocan cities of Safi and Agadir.