Advance
Naval Drill
The confusion of combat can leave a warship unfit for action for a long time. A well-drilled crew will recover much faster than an ordinary one.
Advance tree
It has no requires, so the game files don’t say where this goes. When the game builds the 
Discovery tree, it adds this at the end of a branch with room for it, in the same spot in every campaign.
Navy Morale+10%
Belongs to 1
- DiscoveryAge