Combat/Installation Type


 * For special effect on non-installation enemies like PT Imp Pack, please refer to each of their own pages.

Abyssal Land Bases, otherwise known as Installations, are enemies representing land-based military fortifications and facilities. While categorized as various different ship classes within the game, they have numerous differences from ordinary ships that grant them unique defensive strengths and weaknesses against shipborne weapons.

General Rules

 * Cannot be attacked by Torpedoes.
 * Note that submarine can attack them during the night regardless of equipment.
 * Torpedo value isn't taken into calculation when attacking them, except during 2013 Fall Event. When targeted, torpedo attacks (during Torpedo Phase or Night Battle) will not activate either.
 * Cannot be attacked by Carriers equipped with Dive Bomber, but Dive Bombers can target them during Opening Air Strikes.
 * Torpedo Bombers CAN attack them during Opening Air Strikes.
 * However, the torpedo stat of Torpedo Bombers is not taken into calculation when attacking Installations.
 * Equipping Type 3 Shell and WG42 (Wurfgerät 42) deals extra damage to Installations.
 * BBV and CV type Installations attack power is calculated in the same way as Carrier Type ships.
 * Special damage labels are shown when damaged:
 * All Installation Type Abyssals that carry bombers will not attack during Day Battle when Moderately Damaged, just like Carriers.
 * Installations also activate the second shelling phase, like battleships.
 * Submarines will be forced to attack Installation Type enemies during day battle shelling phase when equipped with certain equipment, such as the WG42.
 * Can be identified by their speed (None).

Types
According to the March 11 2016 Update Patch Notes, there are now different types of Installations, with different characteristics.

Soft-Skinned
Soft-Skinned types refer to normal installations. Unless otherwise specified, most Installations introduced before March 11 2016 should belong to this category. All bonuses below are pre-cap.

Pillbox
Pillbox is a new type of Installations introduced via Map 6-4, added in the March 11 2016 update.
 * They take increased damage from any of the following equipment:
 * If more than one of the following bonus applies, then:
 * If those bonuses are from same category, then the highest bonus is selected,
 * If those bonuses are from different category, then they are multiplied together
 * For instance, if you equip a regular Daihatsu Landing Craft★1, a Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)★9 and a Special Type 2 Amphibious Tank onto same DD, then you can get 1.4×2.15×(1+[[1+9]/2]/50)×2.4=7.9464×
 * All the bonuses given above are calculated assuming that these are pre-cap bonuses, like the regular Type 3 Shell.
 * Land-based Attack Aircraft use dive-bombing stat against installations and are thus eligible for both bomber modifiers.
 * It is currently unknown if jet fighter-bombers and seaplane bombers are affected.

Artillery Imps are currently the only known Pillbox-type Abyssal Installation.

Others
These are Installations that (might) behave differently in regards to damage, and haven't been categorized in the above categories.

Supply Depot Princess

 * Regular pre-cap additive (from WG42) and multiplicative (from T3 Shell) bonuses apply.
 * Regular post-cap multiplicative day battle AP Shell bonus applies, as she is BBV.
 * Additional post-cap multiplicative bonuses (cross-category synergy bonuses exist):
 * The bonus for Daihatsu Landing Craft is still under investigation.
 * The bonus for Daihatsu w/ Tank may have been changed. (2.63-2.87x?)
 * The Dive Bomber modifier applies to bombers with dive bombing stat.
 * It is currently unknown if jet fighter-bombers and seaplane bombers are affected.
 * The two aircraft modifiers are applied only to aerial combat. Land-based Attack Aircrafts use the dive-bombing stat when attacking installations and gain both aircraft modifiers.

Isolated Island Princess
Pre-cap bonus: (See Pillbox section for how these bonuses multiply together)

Central Princess

 * Takes increased damage from dive bombers and seaplane bombers during opening stages.

Central Princess Damaged Form

 * Takes increased damage from WG42 and Type 2 Tanks. However, using both of them together cancels Tank bonus.[4 ]

Harbour Summer Princess
Pre-cap bonus : (See Pillbox section for how these bonuses multiply together, but the effects of having different equipment from the same category has not been tested on Harbour Summer Princess Damaged Form yet.)

Ship Type
Despite those enemies are installations, they do have the "ship type" parameter which influence their behavior in battle.

Currently, there are Aviation Battleship, Battleship, and Carrier Installations.


 * Aviation Battleship type: Most Installations belong to this type, firepower calculation same as carriers, shelling attack animation in both day battle and night battle [in browser game version], cannot attack in day battle if heavily damaged.
 * Battleship type: Artillery Imp and Central Princess, firepower calculation same as battleships, shelling attack animation in both day battle and night battle, can attack in day battle even if they are heavily damaged.
 * Carrier type: Lycoris Princess, firepower calculation same as carriers, carrier attack animation in day battle and shelling attack animation in night battle, cannot attack in day battle if heavily damaged. Killing them count toward carrier kill quest.

List of Installation Type Enemies Sorted by Their Description and Appearance
Imp=


 * -|Demon=

{{#tag:tabber|Airfield Princess=
 * -|Princess=

{| class="wikitable" ! Name ! "Battle card" ! Notes {{!}} Spring 2016 Event E-6 Boss for easy difficulty. {{!}}- {{!}} Central Princess {{!}} {{ShipBattleCardKai|Central Princess/II}} {{!}} Spring 2016 Event E-6 Boss for normal/medium difficulty mainly. {{!}}- {{!}} Central Princess {{!}} {{ShipBattleCardKai|Central Princess/III}} {{!}} Spring 2016 Event E-6 Boss for hard difficulty mainly. {{!}}- {{!}} Central Princess {{!}} {{ShipBattleCardKai|Central Princess/Damaged}} {{!}} Spring 2016 Event E-7 Boss for easy difficulty. {{!}}- {{!}} Central Princess {{!}} {{ShipBattleCardKai|Central Princess/Damaged II}} {{!}} Spring 2016 Event E-7 Boss for normal/medium difficulty mainly. {{!}}- {{!}} Central Princess {{!}} {{ShipBattleCardKai|Central Princess/Damaged III}} {{!}} Spring 2016 Event E-7 Boss for hard difficulty mainly. {{!}}}
 * -|Central Princess=
 * Central Princess
 * {{ShipBattleCardKai|Central Princess}}
 * {{ShipBattleCardKai|Central Princess}}

{{!}}-{{!}}Harbour Princess= {{{!}} class="wikitable" ! Name ! "Battle card" ! Notes {{!}}- {{!}} Harbour Princess {{!}} {{ShipBattleCardKai|Harbour Princess}} {{!}} Appears in numerous event maps, see respective page for more information. {{!}}- {{!}} Harbour Princess {{!}} {{ShipBattleCardKai|Harbour Princess/Final}} {{!}} Final form. Appears in numerous event maps, see respective page for more information. {{!}}}

{{!}}-{{!}}Harbour Summer Princess= {{{!}} class="wikitable" ! Name ! "Battle card" ! Notes {{!}}- {{!}} Harbour Summer Princess {{!}} {{ShipBattleCardKai|Harbour Summer Princess}} {{!}} Summer 2016 Event E-3 Boss for easy difficulty. {{!}}- {{!}} Harbour Summer Princess {{!}} {{ShipBattleCardKai|Harbour Summer Princess/II}} {{!}} Summer 2016 Event E-3 Boss for medium difficulty. {{!}}- {{!}} Harbour Summer Princess {{!}} {{ShipBattleCardKai|Harbour Summer Princess/III}} {{!}} Summer 2016 Event E-3 Boss for hard difficulty. {{!}}- {{!}} Harbour Summer Princess {{!}} {{ShipBattleCardKai|Harbour Summer Princess/Damaged}} {{!}} Summer 2016 Event E-3 Boss for easy difficulty. Final form {{!}}- {{!}} Harbour Summer Princess {{!}} {{ShipBattleCardKai|Harbour Summer Princess/Damaged II}} {{!}} Summer 2016 Event E-3 Boss for medium difficulty. Final form {{!}}- {{!}} Harbour Summer Princess {{!}} {{ShipBattleCardKai|Harbour Summer Princess/Damaged III}} {{!}} Summer 2016 Event E-3 Boss for hard difficulty. Final form {{!}}}

{{!}}-{{!}}Isolated Island Princess= {{{!}} class="wikitable" ! Name ! "Battle card" ! Notes {{!}}- {{!}} Isolated Island Princess {{!}} {{ShipBattleCardKai|Isolated Island Princess}} {{!}} World 6: 中部海域 6-4. Standard Carrier Installation {{!}}- {{!}} Isolated Island Princess {{!}} {{ShipBattleCardKai|Isolated Island Princess/II}} {{!}} World 6: 中部海域 6-4. Standard Carrier Installation {{!}}- {{!}} Isolated Island Princess {{!}} {{ShipBattleCardKai|Isolated Island Princess/III}} {{!}} World 6: 中部海域 6-4. Standard Carrier Installation {{!}}- {{!}} Isolated Island Princess {{!}} {{ShipBattleCardKai|Isolated Island Princess/IV}} {{!}} World 6: 中部海域 6-4. Aviation Battleship Installation {{!}}- {{!}} Isolated Island Princess {{!}} {{ShipBattleCardKai|Isolated Island Princess/V}} {{!}} World 6: 中部海域 6-4. Battleship Installation {{!}}}

{{!}}-{{!}}Lycoris Princess= {{{!}} class="wikitable" ! Name ! "Battle card" ! Notes {{!}}- {{!}} Lycoris Princess {{!}} {{ShipBattleCardKai|Lycoris Princess}} {{!}} Spring 2016 Event E-5 Boss for easy difficulty. Standard Carrier Installation {{!}}- {{!}} Lycoris Princess {{!}} {{ShipBattleCardKai|Lycoris Princess/II}} {{!}} Spring 2016 Event E-5 Boss for normal/medium difficulty. Standard Carrier Installation {{!}}- {{!}} Lycoris Princess {{!}} {{ShipBattleCardKai|Lycoris Princess/III}} {{!}} Spring 2016 Event E-5 Boss for hard difficulty. Standard Carrier Installation {{!}}- {{!}} Lycoris Princess {{!}} {{ShipBattleCardKai|Lycoris Princess/IV}} {{!}} Spring 2016 Event E-5 Air Raid Node Standard Carrier Installation {{!}}- {{!}} Lycoris Princess {{!}} {{ShipBattleCardKai|Lycoris Princess/V}} {{!}} Spring 2016 Event E-5 Air Raid Node Standard Carrier Installation {{!}}}

{{!}}-{{!}}Midway Princess= {{{!}} class="wikitable" ! Name ! "Battle card" ! Notes {{!}}- {{!}} Midway Princess {{!}} {{ShipBattleCardKai|Midway Princess}} {{!}} Summer 2014 Event E-3 Pre-boss node. Summer 2014 Event E-4 boss. {{!}}- {{!}} Midway Princess {{!}} {{ShipBattleCardKai|Midway Princess/Final}} {{!}} Summer 2014 Event E-3 Pre-boss node. Summer 2014 Event E-4 boss. Final form {{!}}}

{{!}}-{{!}}Northern Princess= {{{!}} class="wikitable" ! Name ! "Battle card" ! Notes {{!}}- {{!}} Northern Princess {{!}} {{ShipBattleCardKai|Northern Princess}} {{!}} Summer 2014 Event E-2 boss. {{!}}- {{!}} Northern Princess {{!}} {{ShipBattleCardKai|Northern Princess/Final}} {{!}} Summer 2015 Event E-2 boss in final form. {{!}}- {{!}} Northern Princess {{!}} {{ShipBattleCardKai|Northern Princess/EO}} {{!}} World 3: 北方海域, 3-5 Pre-boss node. {{!}}- {{!}} Northern Princess {{!}} {{ShipBattleCardKai|Northern Princess/EO Weak}} {{!}} World 3: 北方海域, 3-5 Pre-boss node. Weak form {{!}}- {{!}} Northern Princess {{!}} {{ShipBattleCardKai|Northern Princess/EO Final}} {{!}} World 3: 北方海域, 3-5 Pre-boss node but in final form. {{!}}- {{!}} Northern Princess {{!}} {{ShipBattleCardKai|Northern Princess/EO Weak Final}} {{!}} World 3: 北方海域, 3-5 Pre-boss node but in final form. Weak form {{!}}}

{{!}}-{{!}}Northernmost Landing Princess= {{{!}} class="wikitable" ! Name ! "Battle card" ! Notes {{!}}- {{!}} Northernmost Landing Princess {{!}} {{ShipBattleCardKai|Northernmost Landing Princess}} {{!}} Spring 2017 Event E-4 boss for easy difficulty. {{!}}- {{!}} Northernmost Landing Princess {{!}} {{ShipBattleCardKai|Northernmost Landing Princess}} {{!}} Spring 2017 Event E-4 boss for medium difficulty. {{!}}- {{!}} Northernmost Landing Princess {{!}} {{ShipBattleCardKai|Northernmost Landing Princess}} {{!}} Spring 2017 Event E-4 boss for hard difficulty. {{!}}-

{{!}}-{{!}}Supply Depot Princess= {{{!}} class="wikitable" ! Name ! "Battle card" ! Notes {{!}}- {{!}} Supply Depot Princess {{!}} {{ShipBattleCardKai|Supply Depot Princess}} {{!}} Winter 2016 Event E-2 Boss for easy difficulty. {{!}}- {{!}} Supply Depot Princess {{!}} {{ShipBattleCardKai|Supply Depot Princess/Damaged}} {{!}} Winter 2016 Event E-2 Boss for easy difficulty. Final form {{!}}- {{!}} Supply Depot Princess {{!}} {{ShipBattleCardKai|Supply Depot Princess/II}} {{!}} Winter 2016 Event E-2 Boss for normal/medium difficulty. {{!}}- {{!}} Supply Depot Princess {{!}} {{ShipBattleCardKai|Supply Depot Princess/Damaged II}} {{!}} Winter 2016 Event E-2 Boss for normal/medium difficulty. Final form {{!}}- {{!}} Supply Depot Princess {{!}} {{ShipBattleCardKai|Supply Depot Princess/III}} {{!}} Winter 2016 Event E-2 Boss for hard difficulty. {{!}}- {{!}} Supply Depot Princess {{!}} {{ShipBattleCardKai|Supply Depot Princess/Damaged III}} {{!}} Winter 2016 Event E-2 Boss for hard difficulty. Final form {{!}}} }}


 * -|Water Demon=

{{#tag:tabber|Anchorage Water Demon= {{{!}} class="wikitable" ! Name ! "Battle card" ! Notes {{!}}- {{!}} Anchorage Water Demon {{!}} {{!}} Spring 2015 Event E-5 Boss. Appears also in Fall 2015 Event E-4 node M. {{!}}- {{!}} Anchorage Water Demon {{!}} {{!}} Spring 2015 Event E-5 Boss "final form". Appears also in Fall 2015 Event E-4 node M. {{!}}- {{!}} Anchorage Water Demon {{!}} {{!}} Spring 2015 Event E-5 Boss "strong form". {{!}}- {{!}} Anchorage Water Demon {{!}} {{!}} Spring 2015 Event E-5 Boss "final and strong form". {{!}}}

{{!}}-{{!}}Harbour Water Demon= {{{!}} class="wikitable" ! Name ! "Battle card" ! Notes {{!}}- {{!}} Harbour Water Demon {{!}} {{!}} Spring 2015 Event E-4 boss. {{!}}- {{!}} Harbour Water Demon {{!}} {{!}} Spring 2015 Event E-4 boss in final form. {{!}}- {{!}} Harbour Water Demon {{!}} {{!}} Spring 2015 Event E-4 boss in strong form. {{!}}- {{!}} Harbour Water Demon {{!}} {{!}} Spring 2015 Event E-4 boss in final and strong form. {{!}}} }}