technologies = {

fleet_in_being = {
#Fleet in being is mainly focused on Battleships (and
Battlecrusiers/Heavy cruisers) and ASW with carriers and submarines being used to a
lesser extent. The fleet may not have to do anything at all to be useful - simply
having a powerful fleet in a protected port forces your enemies to keep a fleet of
their own nearby in order you fight you if you emerge
#Bonus org for BB/BC/CA

# EFFECT #############
battleship = {
max_organisation = 10
}
battle_cruiser = {
max_organisation = 10
}
heavy_cruiser = {
max_organisation = 10
}
light_cruiser = {
surface_detection = 0.10
}
destroyer = {
surface_detection = 0.10
}
mines_planting_by_fleets_factor = 0.1
#####

xor = { trade_interdiction base_strike }

path = {
leads_to_tech = battlefleet_concentration
research_cost_coeff = 1
}

path = {
leads_to_tech = convoy_sailing
research_cost_coeff = 1
}

path = {
leads_to_tech = submarine_operations
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
cat_fleet_in_being
}
 folder = {
name = naval_doctrine_folder
position = { x = 0 y = 0 }
}

ai_will_do = {
factor = 2
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 1.0
cruiser = 1.0
}
}

battlefleet_concentration = {
# EFFECT #############
battleship = {
max_organisation = 10
}
battle_cruiser = {
max_organisation = 10
}
heavy_cruiser = {
max_organisation = 10
}
strike_force_movement_org_loss = -0.2
########

path = {
leads_to_tech = subsidiary_carrier_role
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
cat_fleet_in_being
}

folder = {
name = naval_doctrine_folder
position = { x = -2 y = 2 }
}

ai_will_do = {
factor = 1
modifier = {
has_war = yes
factor = 5
}
 modifier = {
tag = ENG
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 1.0
cruiser = 1.5
}
}

subsidiary_carrier_role = {
#Carriers support the Battleships

# EFFECT #############
carrier = {
max_organisation = 10
}
sortie_efficiency = 0.1
########

path = {
leads_to_tech = hunter_killer_groups
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
cat_fleet_in_being
}

folder = {
name = naval_doctrine_folder
position = { x = -2 y = 4 }
}

ai_will_do = {
factor = 1
modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = ENG
factor = 2
}
 modifier = {
has_navy_experience > 120
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 1.0
carrier = 1.5
naval_air = 0.75
}
}

hunter_killer_groups = {
#Groups of Destroyers (and CVEs should those ever be added) formed to
hunt down enemy subs

# EFFECT #############
destroyer = {
max_organisation = 20
sub_detection = 0.1
}
light_cruiser = {
max_organisation = 10
sub_detection = 0.2
}

convoy_escort_efficiency = 0.05
########

path = {
leads_to_tech = floating_fortress
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
cat_fleet_in_being
}

folder = {
name = naval_doctrine_folder
position = { x = -2 y = 6 }
 }

ai_will_do = {
factor = 1
modifier = {
has_war_with = GER
factor = 5
}
modifier = {
tag = ENG
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 1.5
cruiser = 1.0
}
}

floating_fortress = {
#Large, powerful gun armed ships are clearly the best ships

# EFFECT #############
battleship = {
max_organisation = 20
}

navy_capital_ship_defence_factor = 0.10

########

path = {
leads_to_tech = floating_airfield
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
cat_fleet_in_being
}

folder = {
 name = naval_doctrine_folder
position = { x = -2 y = 8 }
}

ai_will_do = {
factor = 1
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 2.0
}
}

floating_airfield = {
#Non base strike trees get a late CV booster

# EFFECT #############
carrier = {
max_organisation = 20
}
sortie_efficiency = 0.2
########

path = {
leads_to_tech = grand_battlefleet
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
cat_fleet_in_being
}

folder = {
name = naval_doctrine_folder
position = { x = -1 y = 10 }
}

ai_will_do = {
factor = 1
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
 }
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
carrier = 2.0
naval_air = 0.75
}
}

grand_battlefleet = {
#Top tech for the Battlefleet tree.

# EFFECT #############
battleship = {
max_organisation = 20
}

battle_cruiser = {
max_organisation = 20
}

heavy_cruiser = {
max_organisation = 20
}

navy_anti_air_attack_factor = 0.10
navy_capital_ship_attack_factor = 0.1
mines_planting_by_fleets_factor = 0.1

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
cat_fleet_in_being
}

folder = {
name = naval_doctrine_folder
position = { x = -1 y = 12 }
}

ai_will_do = {
factor = 1
modifier = {
tag = ENG
factor = 2
}
modifier = {
has_navy_experience > 120
 factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 2.0
}
}

convoy_sailing = {
#Convoy escort/ ASW branch

# EFFECT #############
destroyer = {
max_organisation = 10
sub_detection = 0.05
}
convoy_escort_efficiency = 0.05
#####

path = {
leads_to_tech = convoy_escorts
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
convoy_defense_tree
cat_fleet_in_being
}

folder = {
name = naval_doctrine_folder
position = { x = 0 y = 2 }
}

ai_will_do = {
factor = 1

modifier = {
has_war = yes
factor = 5
}
 modifier = {
tag = ENG
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 1.0
naval_equipment = 1.0
}
}

convoy_escorts = {
#Assigning dedicated convoy escorts to keep them safe

# EFFECT #############
destroyer = {
max_organisation = 10
sub_detection = 0.05
}
convoy_escort_efficiency = 0.1
#####

path = {
leads_to_tech = escort_carriers
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
convoy_defense_tree
cat_fleet_in_being
}

folder = {
name = naval_doctrine_folder
position = { x = 0 y = 4 }
}

ai_will_do = {
factor = 1

modifier = {
has_war = yes
factor = 5
}
modifier = {
 tag = ENG
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 1.5
naval_equipment = 1.0
}
}

escort_carriers = {
#Small carriers/converted merchant ships sail with convoys for
increased defense against subs and raiders

# EFFECT #############
carrier = {
sub_detection = 0.25
}
convoy_escort_efficiency = 0.15
####

path = {
leads_to_tech = integrated_convoy_defence
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
convoy_defense_tree
cat_fleet_in_being
}

folder = {
name = naval_doctrine_folder
position = { x = 0 y = 6 }
}

ai_will_do = {
 factor = 1

modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = ENG
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 1.0
naval_equipment = 1.5
}
}

integrated_convoy_defence = {
#The top convoy tech, basically now all the earlier concepts are
working well with each other for maximum effect

# EFFECT #############
destroyer = {
max_organisation = 20
sub_detection = 0.1
}
light_cruiser = {
max_organisation = 10
sub_detection = 0.15
}
carrier = {
sub_detection = 0.25
}
convoy_escort_efficiency = 0.10
#####

path = {
leads_to_tech = floating_airfield
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
 research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
convoy_defense_tree
cat_fleet_in_being
}

folder = {
name = naval_doctrine_folder
position = { x = 0 y = 8 }
}

ai_will_do = {
factor = 1

modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = ENG
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 1.0
naval_equipment = 1.0
}
}

submarine_operations = {
# Basic sub-boosting tree, not as good as Trade Interdiction's

# EFFECT ##############
submarine = {
max_organisation = 10
surface_detection = 0.05
}
naval_torpedo_reveal_chance_factor = -0.05
#######

path = {
leads_to_tech = undersea_blockade
 research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
submarine_doctrine
cat_fleet_in_being
}

folder = {
name = naval_doctrine_folder
position = { x = 2 y = 2 }
}

ai_will_do = {
factor = 1
}

ai_research_weights = {
naval_doctrine = -1.0
submarine = 2.0
}
}

undersea_blockade = {
# Sub boost

# EFFECT ##############
submarine = {
max_organisation = 10
surface_detection = 0.1
}
#######

path = {
leads_to_tech = convoy_interdiction
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
submarine_doctrine
cat_fleet_in_being
}
 folder = {
name = naval_doctrine_folder
position = { x = 2 y = 4 }
}

ai_will_do = {
factor = 1
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
submarine = 2.0
}
}

convoy_interdiction = {
# Sub boost
# EFFECT ##############
submarine = {
max_organisation = 10
surface_detection = 0.05
convoy_raiding_coordination = 0.05
}
naval_torpedo_reveal_chance_factor = -0.10
#######

path = {
leads_to_tech = submarine_offensive
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
submarine_doctrine
cat_fleet_in_being
}

folder = {
name = naval_doctrine_folder
position = { x = 2 y = 6 }
}

ai_will_do = {
 factor = 1
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
submarine = 2.0
}
}

submarine_offensive = {
# Sub boost
# EFFECT ##############
submarine = {
max_organisation = 10
surface_detection = 0.05
convoy_raiding_coordination = 0.1
}
#######

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
fleet_in_being_tree
submarine_doctrine
cat_fleet_in_being
}

folder = {
name = naval_doctrine_folder
position = { x = 2 y = 8 }
}

ai_will_do = {
factor = 1
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
 submarine = 2.0
}
}

trade_interdiction = {
# This tree is focused on sinking convoys, and boosting Subs and all
types of Cruiser. It has some boosts for CVs and Battleships, but the CVs should be
a bit worse and the BBs a lot worse than Fleet in being's.

xp_research_type = navy

# EFFECT ##############
submarine = {
max_organisation = 10
surface_detection = 0.05
}

light_cruiser = {
max_organisation = 10
surface_detection = 0.05
}

heavy_cruiser = {
max_organisation = 10
surface_detection = 0.05
}
#######

xor = { fleet_in_being base_strike }

path = {
leads_to_tech = convoy_interdiction_ti
research_cost_coeff = 1
}

path = {
leads_to_tech = raider_patrols
research_cost_coeff = 1
}

path = {
leads_to_tech = carrier_operations
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
trade_interdiction_tree
submarine_doctrine
cat_trade_interdiction
}
 folder = {
name = naval_doctrine_folder
position = { x = 0 y = 0 }
}

ai_will_do = {
factor = 1
modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = GER
factor = 3
}
modifier = {
has_navy_experience > 120
factor = 2
}
}

ai_research_weights = {
naval_doctrine = -1.0
submarine = 1.0
cruiser = 1.0
}
}

convoy_interdiction_ti = {

# same as convoy interdiction

path = {
leads_to_tech = unrestricted_submarine_warfare
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
trade_interdiction_tree
submarine_doctrine
cat_trade_interdiction
}
 folder = {
name = naval_doctrine_folder
position = { x = 2 y = 2 }
}

ai_will_do = {
factor = 1

modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = GER
factor = 3
}
modifier = {
has_navy_experience > 120
factor = 2
}
}

ai_research_weights = {
naval_doctrine = -1.0
submarine = 2.0
}
}

unrestricted_submarine_warfare = {
#Nice bonus for subs vs convoys

# EFFECT ##############
submarine = {
surface_detection = 0.1
convoy_raiding_coordination = 0.05
}
navy_submarine_attack_factor = 0.1
#######

path = {
leads_to_tech = wolfpacks
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
trade_interdiction_tree
submarine_doctrine
cat_trade_interdiction
}

folder = {
name = naval_doctrine_folder
 position = { x = 2 y = 4 }
}

ai_will_do = {
factor = 1

modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = GER
factor = 3
}
modifier = {
has_navy_experience > 120
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
submarine = 2.0
}
}

wolfpacks = {
# More sub bonuses - subs operate in groups to sink convoys

# EFFECT ##############
submarine = {
max_organisation = 10
convoy_raiding_coordination = 0.15
surface_detection = 0.10
}

naval_torpedo_reveal_chance_factor = -0.15
#######

path = {
leads_to_tech = advanced_submarine_warfare
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
 naval_doctrine
trade_interdiction_tree
submarine_doctrine
cat_trade_interdiction
}

folder = {
name = naval_doctrine_folder
position = { x = 2 y = 6 }
}

ai_will_do = {
factor = 1

modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = GER
factor = 3
}
modifier = {
has_navy_experience > 120
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
submarine = 2.0
}
}

advanced_submarine_warfare = {
# More sub bonuses - subs are deployed in numbers and the navy is
better at putting them in the right places

# EFFECT ##############
submarine = {
max_organisation = 10
convoy_raiding_coordination = 0.2
surface_detection = 0.1
max_strength = 0.2
}

path = {
leads_to_tech = combined_operations_raiding
research_cost_coeff = 1
}
 xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
trade_interdiction_tree
submarine_doctrine
cat_trade_interdiction
}

folder = {
name = naval_doctrine_folder
position = { x = 2 y = 8 }
}

ai_will_do = {
factor = 1

modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = GER
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
submarine = 2.0
}
}

combined_operations_raiding = {
#top raiding idea - subs and surface raiders act in harmony to destroy
convoys
# EFFECT ##############
submarine = {
max_organisation = 10
convoy_raiding_coordination = 0.05
surface_detection = 0.1
}
light_cruiser = {
max_organisation = 10
convoy_raiding_coordination = 0.35
surface_detection = 0.15
}

heavy_cruiser = {
max_organisation = 10
convoy_raiding_coordination = 0.35
surface_detection = 0.15
}

battle_cruiser = {
max_organisation = 10
convoy_raiding_coordination = 0.35
surface_detection = 0.15
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
trade_interdiction_tree
submarine_doctrine
cat_trade_interdiction
}

folder = {
name = naval_doctrine_folder
position = { x = 2 y = 10 }
}

ai_will_do = {
factor = 1

modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = GER
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
 }

ai_research_weights = {
naval_doctrine = -1.0
cruiser = 1.5
submarine = 1.0
}
}

raider_patrols = {
#Surface raiding Branch + some boosts for Battleships

# EFFECT ##############
light_cruiser = {
max_organisation = 10
surface_visibility = -0.10
convoy_raiding_coordination = 0.15
surface_detection = 0.10
}

heavy_cruiser = {
max_organisation = 10
surface_visibility = -0.10
convoy_raiding_coordination = 0.15
surface_detection = 0.10
}
#######

path = {
leads_to_tech = capital_ship_raiders
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
trade_interdiction_tree
cat_trade_interdiction
}

folder = {
name = naval_doctrine_folder
position = { x = -2 y = 2 }
}

ai_will_do = {
factor = 1
}

ai_research_weights = {
naval_doctrine = -1.0
cruiser = 1.5
battleship = 1.0
 }
}

capital_ship_raiders = {
#Battleships/Battlecrusiers are used as raiders rather than in the line
of battle in a fleet

# EFFECT ##############
battle_cruiser = {
max_organisation = 20
surface_visibility = -0.20
convoy_raiding_coordination = 0.15
surface_detection = 0.15
}

battleship = {
max_organisation = 20
surface_visibility = -0.25
convoy_raiding_coordination = 0.5
surface_detection = 0.25
}

naval_enemy_fleet_size_ratio_penalty_factor = 0.1
#######

path = {
leads_to_tech = battlefleet_concentration_ti
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
trade_interdiction_tree
cat_trade_interdiction
}

folder = {
name = naval_doctrine_folder
position = { x = -2 y = 4 }
}

ai_will_do = {
factor = 1
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}
 ai_research_weights = {
naval_doctrine = -1.0
battleship = 1.0
cruiser = 1.0
}
}

battlefleet_concentration_ti = {

#same as battlefleet_concentration
# EFFECT #############
battleship = {
max_organisation = 10
}
battle_cruiser = {
max_organisation = 10
}
heavy_cruiser = {
max_organisation = 10
}
strike_force_movement_org_loss = -0.2
########

path = {
leads_to_tech = floating_fortress_ti
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
trade_interdiction_tree
cat_trade_interdiction
}

folder = {
name = naval_doctrine_folder
position = { x = -2 y =6 }
}

ai_will_do = {
factor = 1
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
 battleship = 2.0
}
}

floating_fortress_ti = {

#same as floating_fortress
# EFFECT #############
battleship = {
max_organisation = 20
}
navy_capital_ship_defence_factor = 0.10
########

path = {
leads_to_tech = floating_airfield_ti
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
trade_interdiction_tree
cat_trade_interdiction
}

folder = {
name = naval_doctrine_folder
position = { x = -2 y = 8 }
}

ai_will_do = {
factor = 1
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 2.0
}
}

floating_airfield_ti = {

#same as floating_airfield
# EFFECT #############
carrier = {
 max_organisation = 20
}
sortie_efficiency = 0.2
########

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
trade_interdiction_tree
cat_trade_interdiction
}

folder = {
name = naval_doctrine_folder
position = { x = -1 y = 10 }
}

ai_will_do = {
factor = 1
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
carrier = 2.0
naval_air = 0.75
}
}

carrier_operations = {
# Carrier/Convoy defense branch - not great at either of them, should
have worse CVs than Fleet in Being

# EFFECT #############
carrier = {
max_organisation = 20
}
modifier = {
naval_strike_targetting_factor = 0.1
}
########

path = {
leads_to_tech = convoy_sailing_ti
research_cost_coeff = 1
}
 xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
trade_interdiction_tree
cat_trade_interdiction
}

folder = {
name = naval_doctrine_folder
position = { x = 0 y = 2 }
}

ai_will_do = {
factor = 1
modifier = {
has_navy_size = {
type = carrier
size < 1
}
factor = 0
}
}

ai_research_weights = {
naval_doctrine = -1.0
carrier = 2.0
naval_air = 0.75
}
}

convoy_sailing_ti = {

#same as convoy_sailing
# EFFECT #############
destroyer = {
max_organisation = 10
sub_detection = 0.05
}
convoy_escort_efficiency = 0.05
#####

path = {
leads_to_tech = subsidiary_carrier_role_ti
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
 trade_interdiction_tree
convoy_defense_tree
cat_trade_interdiction
}

folder = {
name = naval_doctrine_folder
position = { x = 0 y = 4 }
}

ai_will_do = {
factor = 1
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 1.0
naval_equipment = 1.0
}
}

subsidiary_carrier_role_ti = {

#same as subsidiary_carrier_role
# EFFECT #############
carrier = {
max_organisation = 10
}
sortie_efficiency = 0.1
########

path = {
leads_to_tech = naval_air_operations
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
trade_interdiction_tree
cat_trade_interdiction
}

folder = {
name = naval_doctrine_folder
position = { x = 0 y = 6 }
}

ai_will_do = {
factor = 1
}

ai_research_weights = {
naval_doctrine = -1.0
 carrier = 2.0
naval_air = 0.75
}
}

naval_air_operations = {
# slightly improved CV operation

# EFFECT #############
carrier = {
max_organisation = 10
}
modifier = {
naval_strike_targetting_factor = 0.1
}
########

path = {
leads_to_tech = floating_airfield_ti
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
trade_interdiction_tree
cat_trade_interdiction
}

folder = {
name = naval_doctrine_folder
position = { x = 0 y = 8 }
}

ai_will_do = {
factor = 1
}

ai_research_weights = {
naval_doctrine = -1.0
carrier = 2.0
naval_air = 0.75
}
}

base_strike = {
#This tree is primarily focused on Carriers. It should have the best
Carriers, Battleships that are better than Trade interdiction but worse than Fleet
in being, and has the same Sub tree as FiB. Convoy defense is better than TI but
worse than FiB

xp_research_type = navy

# EFFECT ##############
carrier = {
max_organisation = 20
}
port_strike = 0.5
#####

xor = { fleet_in_being trade_interdiction }

path = {
leads_to_tech = carrier_primacy
research_cost_coeff = 1
}

path = {
leads_to_tech = submarine_operations_bs
research_cost_coeff = 1
}

path = {
leads_to_tech = convoy_escorts_bs
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
cat_base_strike
}

folder = {
name = naval_doctrine_folder
position = { x = 0 y = 0 }
}

ai_will_do = {
factor = 1
modifier = {
has_war = yes
factor = 2
}
modifier = {
OR = {
tag = USA
tag = JAP
}
factor = 2.5
}
modifier = {
has_navy_experience > 120
factor = 2
}
}

ai_research_weights = {
 naval_doctrine = -1.0
carrier = 2.0
naval_air = 0.75
}
}

carrier_primacy = {
#The idea that the carrier is the primary naval weapon and that other
ships, even the BB, exist to support them
# EFFECT ##############
carrier = {
max_organisation = 20
}
sortie_efficiency = 0.1

modifier = {
naval_strike_targetting_factor = 0.1
}
#############

path = {
leads_to_tech = carrier_task_forces
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
base_strike_main
cat_base_strike
}

folder = {
name = naval_doctrine_folder
position = { x = 2 y = 2 }
}

ai_will_do = {
factor = 1.25

modifier = {
has_war = yes
factor = 2
}
modifier = {
OR = {
tag = USA
tag = JAP
}
factor = 2.5
}
modifier = {
OR = {
has_war_with = JAP
 has_war_with = USA
}
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
}

ai_research_weights = {
naval_doctrine = -1.0
carrier = 2.5
naval_air = 1.0
}
}

carrier_task_forces = {
#Task forces are based around carrier flagship
# EFFECT ##############
carrier = {
max_organisation = 20
}
light_cruiser = {
max_organisation = 20
}
modifier = {
naval_strike_targetting_factor = 0.1
}
##########

path = {
leads_to_tech = floating_airfield_bs
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
base_strike_main
cat_base_strike
}

folder = {
name = naval_doctrine_folder
position = { x = 2 y = 4 }
}

ai_will_do = {
factor = 1

modifier = {
has_war = yes
factor = 2
 }
modifier = {
OR = {
tag = USA
tag = JAP
}
factor = 2.5
}
modifier = {
OR = {
has_war_with = JAP
has_war_with = USA
}
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
has_navy_experience > 120
factor = 2
}
}

ai_research_weights = {
naval_doctrine = -1.0
carrier = 1.0
naval_air = 0.75
cruiser = 1.0
}
}

floating_airfield_bs = {

#same as floating_airfield
# EFFECT #############
carrier = {
max_organisation = 20
}
sortie_efficiency = 0.2
########

path = {
leads_to_tech = massed_strikes
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
base_strike_main
cat_base_strike
}
 folder = {
name = naval_doctrine_folder
position = { x = 2 y = 6 }
}

ai_will_do = {
factor = 1

modifier = {
has_war = yes
factor = 2
}
modifier = {
OR = {
tag = USA
tag = JAP
}
factor = 2.5
}
modifier = {
OR = {
has_war_with = JAP
has_war_with = USA
}
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 4
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
carrier = 2.0
naval_air = 0.75
}
}

massed_strikes = {
#CAGs are larger and more effort is made to have all planes arrive at
the target at the same time, even when launched from multiple CVs
# EFFECT #############
carrier = {
max_organisation = 20
}
carrier_capacity_penalty_reduction = -0.2
sortie_efficiency = 0.2

modifier = {
 naval_strike_targetting_factor = 0.2
}
########

path = {
leads_to_tech = floating_fortress_bs
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
base_strike_main
cat_base_strike
}

folder = {
name = naval_doctrine_folder
position = { x = 2 y = 8 }
}

ai_will_do = {
factor = 1

modifier = {
has_war = yes
factor = 2
}
modifier = {
OR = {
tag = USA
tag = JAP
}
factor = 2.5
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
modifier = {
OR = {
has_war_with = JAP
has_war_with = USA
}
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 4
 }
}

ai_research_weights = {
naval_doctrine = -1.0
carrier = 2.0
naval_air = 0.75
}
}

floating_fortress_bs = {

#same as floating_fortress
# EFFECT #############
battleship = {
max_organisation = 20
}
navy_capital_ship_defence_factor = 0.10
########

path = {
leads_to_tech = carrier_battlegroups
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
base_strike_main
cat_base_strike
}

folder = {
name = naval_doctrine_folder
position = { x = 2 y = 10 }
}

ai_will_do = {
factor = 1
modifier = {
OR = {
tag = USA
tag = JAP
}
factor = 4
}
modifier = {
OR = {
has_war_with = JAP
has_war_with = USA
}
factor = 2
}
modifier = {
 not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 2.0
}
}

carrier_battlegroups = {
#Larger carrier-lead fleets

# EFFECT ##############
carrier = {
max_organisation = 20
}
light_cruiser = {
max_organisation = 20
}

navy_carrier_air_agility_factor = 0.10

###########

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
base_strike_main
cat_base_strike
}

folder = {
name = naval_doctrine_folder
position = { x = 2 y = 12 }
}

ai_will_do = {
factor = 1

modifier = {
has_war = yes
factor = 2
}
modifier = {
OR = {
tag = USA
tag = JAP
}
 factor = 2.5
}
modifier = {
OR = {
has_war_with = JAP
has_war_with = USA
}
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
modifier = {
has_navy_experience > 120
factor = 4
}
}

ai_research_weights = {
naval_doctrine = -1.0
carrier = 1.5
naval_air = 0.75
naval_equipment = 1.0
}
}

submarine_operations_bs = {

# same as submarine_operations
# EFFECT ##############
submarine = {
max_organisation = 10
surface_detection = 0.05
}
naval_torpedo_reveal_chance_factor = -0.05
#######

path = {
leads_to_tech = undersea_blockade_bs
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
cat_base_strike
}

folder = {
 name = naval_doctrine_folder
position = { x = 0 y = 2 }
}

ai_will_do = {
factor = 1
modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = USA
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
}

ai_research_weights = {
naval_doctrine = -1.0
submarine = 2.0
}
}

undersea_blockade_bs = {

# same as undersea_blockade
# EFFECT ##############
submarine = {
max_organisation = 10
surface_detection = 0.1
}
#######

path = {
leads_to_tech = convoy_interdiction_bs
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
cat_base_strike
}

folder = {
name = naval_doctrine_folder
position = { x = 0 y = 4 }
}

ai_will_do = {
factor = 1
 modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = USA
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
submarine = 2.0
}
}

convoy_interdiction_bs = {

# same as convoy_interdiction
# EFFECT ##############
submarine = {
max_organisation = 10
surface_detection = 0.05
convoy_raiding_coordination = 0.05
}
naval_torpedo_reveal_chance_factor = -0.10
#######

path = {
leads_to_tech = submarine_offensive_bs
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
cat_base_strike
}

folder = {
name = naval_doctrine_folder
position = { x = 0 y = 6 }
 }

ai_will_do = {
factor = 1
modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = USA
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
submarine = 2.0
}
}

submarine_offensive_bs = {
# same as submarine_offensive
# EFFECT ##############
submarine = {
max_organisation = 10
surface_detection = 0.05
convoy_raiding_coordination = 0.10
}
#######

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
cat_base_strike
}

folder = {
name = naval_doctrine_folder
position = { x = 0 y = 8 }
}

ai_will_do = {
 factor = 1
modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = USA
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
submarine = 2.0
}
}

convoy_escorts_bs = {

#same as convoy_escorts
# EFFECT #############
destroyer = {
max_organisation = 10
sub_detection = 0.05
}
convoy_escort_efficiency = 0.1
#####

path = {
leads_to_tech = escort_patrols
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
convoy_defense_tree
cat_base_strike
}

folder = {
name = naval_doctrine_folder
 position = { x = -2 y = 2 }
}

ai_will_do = {
factor = 1
modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = USA
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 1.0
naval_equipment = 1.0
}
}

escort_patrols = {
# Lesser version of hunter-killer groups

# EFFECT ##############
destroyer = {
max_organisation = 10
sub_detection = 0.05
}
light_cruiser = {
max_organisation = 10
sub_detection = 0.1
}

convoy_escort_efficiency = 0.05

path = {
leads_to_tech = convoy_sailing_bs
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
convoy_defense_tree
cat_base_strike
}
 folder = {
name = naval_doctrine_folder
position = { x = -2 y = 4 }
}

ai_will_do = {
factor = 1
modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = USA
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 1.0
naval_equipment = 1.0
}
}

convoy_sailing_bs = {

#same as convoy_sailing
# EFFECT #############
destroyer = {
max_organisation = 10
sub_detection = 0.05
}
convoy_escort_efficiency = 0.05
#####

path = {
leads_to_tech = integrated_convoy_defence_bs
research_cost_coeff = 1
}

xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
 naval_doctrine
convoy_defense_tree
cat_base_strike
}

folder = {
name = naval_doctrine_folder
position = { x = -2 y = 6 }
}

ai_will_do = {
factor = 1
modifier = {
has_war = yes
factor = 5
}
modifier = {
tag = USA
factor = 2
}
modifier = {
has_navy_experience > 120
factor = 2
}
modifier = {
not = { ai_air_doctrine_tier_1_trigger = yes }
factor = 0.5
}
modifier = {
not = { ai_air_doctrine_tier_2_trigger = yes }
factor = 0.75
}
}

ai_research_weights = {
naval_doctrine = -1.0
battleship = 1.0
naval_equipment = 1.0
}
}

integrated_convoy_defence_bs = {

#same as integrated_convoy_defence
# EFFECT #############
destroyer = {
max_organisation = 20
sub_detection = 0.10
}
light_cruiser = {
max_organisation = 10
sub_detection = 0.15
}
carrier = {
sub_detection = 0.25
}
convoy_escort_efficiency = 0.1
#####
 xp_research_type = navy
xp_research_cost = 100
xp_research_bonus = 1.00
doctrine = yes
research_cost = 3

categories = {
naval_doctrine
convoy_defense_tree
cat_base_strike
}

folder = {
name = naval_doctrine_folder
position = { x = -2 y = 8 }
}

ai_will_do = {
factor = 1
}

ai_research_weights = {
naval_doctrine = -1.0
naval_equipment = 1.0
battleship = 1.0
}
}