4★ Hull Density
Research · COMBAT
Increases base Hull Health for all Grade 4+ ships.
- Tree
- COMBAT
- Requires
- Ops 40 · Grade 4 Ship Research 1 · R&D DEPARTMENT 40
- Requires at level 10
- Ops 49 · 4★ Shield Modulation 9
Research · COMBAT
Increases base Hull Health for all Grade 4+ ships.