Schematic Category
Mark IV Engine Upgrade

This category is a subcategory of Mark V Engine Upgrade

These categories are subcategories of this category:

Mark III Engine Upgrade

The following schematics belong to either the Mark IV Engine Upgrade category or a descendant of the Mark IV Engine Upgrade category and can thus be used in a slot that requires an item of the Mark IV Engine Upgrade category:

Propulsion Technology I: Simple Ion Drives
- Engine Limiter - Mark I
- Engine Overdriver - Mark I

Propulsion Technology II: Thrust Dynamics
- Engine Limiter - Mark II
- Engine Overdriver - Mark II

Propulsion Technology III: Advanced Hyperdrive Engineering
- Engine Limiter - Mark III
- Engine Overdriver - Mark III

Propulsion Technology IV: Advanced Drive Theory
- Engine Limiter - Mark IV
- Engine Overdriver - Mark IV