Percussion Lock
Percussion Lock is a Fortress Age Dock technology that increases War Ship Broadside damage by 50%. It improves one attack mode rather than increasing every naval attack.

Research profile
- Age & building
- Fortress Age · Dock
- Prerequisite
- Carronade
- Effect
- War Ship Broadside damage +50%
Research effect
Research it after Carronade. It costs 250 Wood and 250 Coin and takes 30 seconds. The bonus applies to Broadside attacks on ships that have access to that attack under the active rules. Position and facing still matter: a ship must bring its Broadside to bear to benefit.
Research condition
Eligible Asian, European and Federal American civilizations · Fortress Age · Dock · requires Carronade · 250 Wood · 250 Coin · 30 seconds · Broadside damage +50%.
Cost and prerequisites
Invest when the fleet expects serious ship-to-ship engagements and can maneuver to use Broadside reliably. Protect the ships while aligning and keep the fleet together; an isolated vessel can be punished while turning into position. If the match is decided by land pressure or another attack mode, the research may be less useful than more ships or immediate defense.