Ships near a Docks get +15% speed for 25 seconds.
Within 7.5 tiles of Dock
Blacksmith
Military Academy: Increase the production speed of infantry, cavalry, siege, and transport units at buildings by 33%. Does not affect religious units or other support units.
Dock
Fire Stations: Military Ships regenerate +1 health every 2 seconds when out of combat.
Copper Plating: Improves the fire and ranged armor of ships by +2.