A single advanced, guided torpedo. The payload is smaller than usual to make room for the advanced guidance package and maneuvering system's reaction mass.
The Atropos torpedo is a large guided torpedo with an extended range. The AM-catalyzed nuclear warhead typically used in torpedo warheads is missing here as baryonic interference from the detonator would foul the guidance systems. It is replaced by a smaller, yet still potent chemical charge.
damage reduced to 1250 (from 2000), speed reduced to 400 (from 500)
OP cost reduced to 4 (dual) and 2 (single)
Weapon data is mismatched to patch notes; damage is 1000
Only up to date for version 0.9.1. It is likely still broadly correct but not verified for the most up to date data yet. Please double check the Version History