Early Spring 2023 Event/Info

Time remaining until Event ends [1]: 1 May 2023 11:00:00 +0900 The Early Spring 2023 Event has ended!
KC anniversary maintenance has started, time remaining until maintenance ends [2]: (~4h event pause) 23 April 2023 20:30:00 +0900 The maintenance has ended. See 2023-04-23 patch notes.
Early Spring 2023 Event Hub Overview Introduction & Overview Main Operation Maps Extra Operation Maps E-1 | E-2 | E-3 E-4 | E-5 | E-6

The Early Spring 2023 Event, also known under the title of Absolute Defense Line! "Ogasawara Regiment" Relief, started on the 1st of March 2023. It is a "Large Scale Event".

• The Main Operations consist of 3 maps, focused around Ogasawara Regiment on the Japanese mainland's shores.
  • E-3 was released on the 3rd of March.
• Extra Operations has been realized on the 18th of March, and is focused around Iwo Jima.
  • E-3 was released on the 20th of March.

6 new ships has been introduced in this event:

• 2 LHA:
  • "Kumano Maru", an IJA carrier/LHA, that, among others, can carry Fighters, Dive Bombers, and Underway Replenishments.
  • "No.101 Transport Ship", a.k.a. "Momochi‎" or "101-chan", an IJN LST/LHA, that, among others, can carry Landing Forces.
• 2 DD are dropable across the event
• 1 DE is dropable on the EO,
• 1 CA is rewarded on E5.

For additional information regarding event-related subjects and content, please refer to Mechanics.

Historical Background

Related Historical Campaigns

• Battle of Iwo Jima

Involved Ships

The following ships were involved in the upcoming operations:

Battle of Iwo Jima (500+ vessels)
US Forces CV Saratoga Mk.II FBB Washington Kai South Dakota Kai Massachusetts Kai

Information

Quick Info Table

Classification	Map	Name	Fleet Type	LBAS	Friendly Fleet	Fleet Tags	Notes
Main Operations	E-1	Operation S21	Single	1	No
	E-2	2nd Torpedo Squadron's Martime Guerrilla Warfare	Single Striking Force Combined	1/2	P1 & P3	·
	E-3	Defeat the Enemy Air Raid Force!	Single Striking Force Combined	2	P3	·  ·	Ship locks affect routing on ALL difficulties is in theory optional, but highly recommended.
Extra Operation	E-4	I-Go Transport Operation	Single Striking Force	2/3	TBA	·
	E-5	Sortie! Hachiman Force	Single Striking Force Combined	2/3	TBA	·  ·
	E-6	Decisive Battle! Counter Landing Operation at Iwo Jima	Single Striking Force Combined	0/1/2/3	TBA	·  ·  ·  ·  ·	Ship locks affect routing on ALL difficulties Lock limited to Hard Only Once E-6 is cleared, tag restrictions stop getting enforced on every map! Tag routing may still be applied.

Fleet Locking Table

Tags	E-1	E-2	E-3	E-4	E-5	E-6 (Hard Only)
Yokosuka Defence Squadron				P1 & P2
2nd Torpedo Squadron		P1 & P2	P1 (& P2)		P1	P3
Supporting Combined Fleet		P3				P4
Combined Fleet			P2			P4
Carrier Task Force			P3		P2 & P3
Operation I-go Fleet				P1 & P2	P1 & P2	P1
Counter Landing Force						P2
Decisive Combined Fleet						P4

New Mechanics

Airstrike Supported Battle

• LBAS can now equip Rotorcraft and Liaison Aircraft (since last update).
• There is a new node type: "Airstrike Supported Battle" nodes. On this node, the enemy fleet will consist of:
  • "Surface enemies" (4-5 SS so far), that are fought like in "Normal Battle" nodes,
  • Followed by "air support enemies" (1-2 CVL so far), bringing air support like in "Normal Combat" nodes, and that cannot be attacked, being visually behind the rest of the enemy fleet and with no visible HP.
  • It is advisable to use Vanguard Formation for Single and Strike Fleets and Cruising Formation 3 in Combined fleets.
• There is a new new equipment type: Landing Forces, only equipable on the new LHA: "No.101 Transport Ship".

New Ships

	DD	Yuugure	E-2, E-3, & E-5 Drop
	DD	Heywood L. Edwards	E-2 & E-3 Drop
	LHA	Kumano Maru	E-3 Reward
	DE	Noumi	E-4, E-5, & E-6 Drop
	CA	Tuscaloosa	E-5 Reward
	LHA (LST)	No.101 Transport Ship	E-6 Reward

Returning Ships

Please refer to drop databases for the most updated lists of event drops, such as TsunDB or Poi-Statistics (or via Discord).

Notable returning ships
	Yamashio Maru	E-1		Souya	E-1 & E-4		Yamato	E-2
	Suzutsuki	E-2		Unryuu	E-2		Ariake	E-2
	Amagi	E-3		Katsuragi	E-3		Nisshin	E-3
	Fuyutsuki	E-3 & E-4		I-201	E-3		I-203	E-3
	Scamp	E-4		Johnston	E-4		Akizuki	E-5 & E-6
	Hatsuzuki	E-5		Shinshuu Maru	E-5		Hornet	E-5
	Saratoga	E-5		Intrepid	E-5		Take	E-5
	Langley	E-6		Iowa	E-6		South Dakota	E-6
	Washington	E-6		Maryland	E-6		Atlanta	E-6
	Honolulu	E-6		Ranger	E-6		Massachusetts	E-6
	Fletcher	E-6		Helena	E-6		Brooklyn	E-6

New Equipment

	Shiden Kai (343 Air Group) 407th Fighter Squadron	Land-based Fighter	E-2
	Zero Fighter Model 52C (Hachiman Force)	Fighter	E-4 & E-5
	Type 1 Land-based Attack Aircraft (Hachiman Force)	Land-based Attack Aircraft	E-4
	Toku Daihatsu Landing Craft + Chi-Ha	Landing Craft	E-4 & E-5
	Toku Daihatsu Landing Craft + Chi-Ha Kai		E-5
	Army Infantry Corps	Landing Forces	E-5
	Type 97 Medium Tank (Chi-Ha)		E-6
	Type 97 Medium Tank New Turret (Chi-Ha Kai)		E-6
	Army Infantry Corps + Chi-Ha Kai		E-6

New Enemy Vessels

• Remodeled Wartime Cargo Princess (E3 Final boss)
• Abyssal Heavy Cruiser Water Princess (E5 Final boss)
• Supply Depot Princess D (E6 3rd boss)
• Abyssal Stranded Landing Princess (E6 Final boss)

New Enemy Equipment

• Abyssal Aviation Maintenance Bugs (Remodeled Wartime Cargo Princess Equipment)
• Abyssal Aviation Maintenance Bugs Pro (Remodeled Wartime Cargo Princess Equipment)
• Abyssal Breakthrough Assault Aircraft (Supply Depot Princess D Equipment)
• Abyssal Breakthrough Assault Aircraft Ace (Supply Depot Princess D Equipment)
• Coastal Ambush Semi-submersible Torpedo Boat (Supply Depot Princess D Equipment)
• Abyssal Rigging General Assault Seaplane (Abyssal Stranded Landing Princess Equipment)
• Abyssal 3inch Single High-angle Gun Mount + Deck Machine Gun (Abyssal Stranded Landing Princess Equipment)

Friendly Fleets

Friendly Fleets (FF) come with a function that allows players to choose if they want to use a FF to aid them in battle or not. It is possible to choose between using "normal only" or "normal and powerful" FF. Powerful FF have an additional cost of 6 Instant Constructions for each time they are deployed in a battle (the blowtorches won't be consumed unless a powerful FF appears).

Soon™

Voice Lines

Friend Fleet Voice Lines

Ship	Japanese/English	Notes
Coastal Defense Ships
Kaiboukan No.4 Kai Friend Fleet 1 Play	Yotsu, acknowledging. I've come to help.	Returning line from Winter 2022 Event.
	ヨツ、了解です。お助けします。
Destroyers
Ariake Kai Friend Fleet 1 Play	Ariake, acknowleging. Let them have it!	Returning line from Rainy-Summer 2020 Event.
	有明、了解だ。ぶちかませ！
Ariake Kai Friend Fleet 2 Play	DesDiv27 has arrived on the battlefield. We'll now begin the attack! Follow meee! Let's goooo!	Returning line from Rainy-Summer 2020 Event.
	二十七駆、戦場海域に到達。これより突撃する！続け〜！行くぜ〜！
Fletcher Kai Mod.2 Friend Fleet 2 Play	Fletcher, acknowledging!	Returning line from Spring 2019 Event.
	Fletcher, 了解しました！
Fuyutsuki Kai Friend Fleet 1 Play	41st Destroyer Division, Fuyutsuki, roger! I'll come!
	４１駆、冬月、了解 ！参る！
Fuyutsuki Kai Friend Fleet 2 Play	41st Destroyer Division, Fuyutsuki, dropping in! Going to support Friendly Fleet right now. Charging in!
	４１駆、冬月、推参！これより友軍艦隊を援護する。突入！
Hamakaze B Kai Friend Fleet 2 Play	Hamakaze, acknowledging.	Returning line from Spring 2019 Event.
	浜風、了解。
Heywood L. Edwards Kai Friend Fleet 1 Play	Heywood L. Edwards. Charging into battlefield. Going to support friendly forces for now. All ships, increase speed! Attack!
	Heywood L. Edwards. 戦場海域に突入。これより友軍を援護します。全艦増速！突撃！
Hibiki Kai Friend Fleet 1 Play	Full speed ahead... Hurrah!	Returning line from Spring 2019 Event.
	両舷いっぱい…Ура!
Isokaze B Kai Friend Fleet 1 Play	Steady, Fire!
	打ち方始めー！
Janus Kai Friend Fleet 1 Play	Allied forces engaged with the enemy fleet spotted ahead! Our fleet will now provide support. Forwards!	Returning line from Fall 2020 Event.
	Janus、前方に敵と交戦中の友軍を発見！我が艦隊はこれより援護する。続け！
Janus Kai Friend Fleet 1 Play	Janus, acknowledging. OK, leave it to me!	Returning line from Hinamatsuri 2020 Mini-Event.
	Janus、了解。OK、任せて！
Jervis Kai Friend Fleet 1 Play	Super lucky! Aha!	Returning line from Fall 2020 Event.
	Super lucky！あは！
Jervis Kai Friend Fleet 1 Play	The Royal Navy Fleet has recognised your fleet as an allied fleet. We'll now support you! Shoot!	Returning line from Hinamatsuri 2020 Mini-Event.
	Royal Navy Fleet、貴艦隊を友軍艦隊と認む。これより貴艦隊を援護する！ Shoot！
Matsu Kai Friend Fleet 1 Play	Matsu, acknowledging. Beginning the attack. Full speed ahead!	Returning line from Spring 2021 Event.
	松、了解！突撃する。両舷増速！
Matsu Kai Friend Fleet 2 Play	The 43rd Torpedo Squadron has arrived at the operation area. We'll now begin the attack!	Returning line from Spring 2021 Event.
	第四三水雷戦隊、戦場海域に到達。これより突撃すッ！
Momo Kai Friend Fleet 2 Play	Idol of the D-type destroyers, Momo, accepting this job. *sparkle*!	Returning line from Spring 2021 Event.
	丁型駆逐艦のアイドル、桃、お仕事了解。キラキラ！
Shigure Kai Ni Friend Fleet 1 Play	Shigure, acknowledging. Begin the attack.	Returning line from Rainy-Summer 2020 Event.
	時雨、了解。突入するよ。
Suzutsuki Kai Friend Fleet 1 Play	Suzutsuki, roger. I'm charging in.
	涼月、了解。突入します。
Take Kai Friend Fleet 2 Play	Destroyer Take, acknowledging. Let's do this!	Returning line from Fall 2020 Event.
	駆逐艦竹、了解だ。やってやるぜ！
Ushio Kai Ni Friend Fleet 1 Play	Don't hurt them!	Returning line from Spring 2022 Event.
	皆を傷付けないで！
Yuugure Kai Friend Fleet 1 Play	27th Destroyer Squadron, Yuugure Squadron, dropping in! We're supporting the fleet!
	第二十七駆逐隊、夕暮隊、推参！お見方いたします！
Yuugure Kai Friend Fleet 2 Play	Yuugure, acknowledged. We're charging in!
	夕暮、了解いたしました。突入します！
Light Cruisers
Jintsuu Kai Ni Friend Fleet 2 Play	Torpedo Squadron 2 has arrived at the operation area. We'll now begin the attack.	Returning line from Fall 2019 Event.
	第二水雷戦隊、戦場海域に到達。これより突入します。
Sakawa Kai Friend Fleet 1 Play	Sakawa, understood. Wait up, Yahagi. Charge!	Returning line from Spring 2022 Event.
	酒匂了解。待ってて、矢矧ちゃん、突入します！
Sakawa Kai Friend Fleet 2 Play	I-I've arrived to support you... Flagship of the 11th Torpedo Squadron, Sakawa... e-entering combat. All ships, commence attack to support the friendly forces.	Returning line from Spring 2022 Event.
	え、援護に参りました…。第十一水雷戦隊旗艦、さ、酒匂…じ、実戦です。これより、全艦突入、友軍を援護します。
Sheffield Kai Friend Fleet 2 Play	HMS Sheffield, acknowledging.	Returning line from Summer 2021 Event.
	HMS Sheffield, 了解。
Sheffield Kai Friend Fleet 1 Play	HMS Sheffield has arrived on the battlefield. I'll now support the allied forces. Charge.	Returning line from Fall 2020 Event.
	HMS Sheffield、戦場に到達した。これより、友軍を援護する。突入。
Yahagi Kai Ni B Friend Fleet 1 Play	2nd Torpedo Squadron, Yahagi, has arriving on the Battlefield. We will charging now, and support our friendly forces. Go get them!
	第二水雷戦隊、矢矧、戦場海域に到達。これより突入、友軍を援護する。掛かれ！
Yahagi Kai Ni B Friend Fleet 2 Play	2nd Torpedo Squadron, Yahagi, roger. DesRon2, charge. Go get them!
	第二水雷戦隊、矢矧、了解。二水戦、突入する。掛かれ！
Heavy Cruisers
Tuscaloosa Kai Friend Fleet 1 Play	Tuscaloosa, roger. Charge!
	Tuscaloosa, roger. 突っ込め！
Tuscaloosa Kai Friend Fleet 2 Play	USS Tuscaloosa Fleet, Ready! Support our friendly forces. Let's continue to attack!
	USS Tuscaloosa Fleet, 見参！友軍艦隊を援護する。突っ込むぞ、続け！
Light Carriers
Houshou Kai Ni Friend Fleet 1 Play	Houshou Air Corps, go!
	鳳翔航空隊、行きなさい！
Langley Kai Friend Fleet 1 Play	Langley, acknowledged! Shipboard aircraft, launch and engage! Attack!
	Langley、了解！艦載機、従事発艦！Attack!
Ryuuhou Kai Ni E Friend Fleet 1 Play	Ryuuhou Attack Squadron, take off! I'm counting on you.	Returning line from Summer 2021 Event.
	龍鳳攻撃隊、発艦！お願い致します。
Battleships
Haruna Kai Ni Friend Fleet 1 Play	I won't allow... that enemy fleet to get in the Admiral's way!	Returning line from Spring 2021 Event.
	提督の前を遮る敵艦隊は、この榛名が…許しません！
Iowa Kai Friend Fleet 1 Play	Haha, so that's how it is. Okay.
	はは、そういうこと～。O～kay.
Kongou Kai Ni C Friend Fleet 1 Play	I told you... I won't let you go once I've got you!	Returning line from Spring 2021 Event.
	食らいついたら離さないって…言ったデース！
South Dakota Kai Friend Fleet 1 Play	USS South Dakota, acknowledging. Charging in!	Returning line from Rainy-Summer 2020 Event.
	USS South Dakota, 了解。突入だ！
South Dakota Kai Friend Fleet 2 Play	Battleship South Dakota has arrived on the battlefield. We'll now support the friendly fleet. Open fire!	Returning line from Rainy-Summer 2020 Event.
	Battleship South Dakota, 戦場海域に到達。これより、友軍艦隊を援護する。Open fire!
Washington Kai Friend Fleet 1 Play	Washington, acknowledging. Ready all guns. Attack!	Returning line from Summer 2022 Event.
	Washington, 了解。各砲門開け。突入！
Washington Kai Friend Fleet 1 Play	USS battleship, Washington, has arrived on the battlefield. Now, let's do this. Open fire! All ships, follow me.	Returning line from Fall 2020 Event.
	USS battleship, Washington, 戦場海域に到達。さあ、やるわ。Open fire! 各艦、続いて。
Yamato Kai Ni Friend Fleet 1 Play	The First Fleet has reached the battlefield area. It will now cover the engaged friendly fleet! All ships, move in! Please follow me!
	第一戦隊、戦場海域に到達。これより交戦中の友軍艦隊を援護します！全艦突入！続いてください！
Warspite Kai Friend Fleet 1 Play	The European Combined Grand Fleet, flagship Warspite, has arrived at the operation area. We will not support the friendly fleets. All ships, attack!	Returning line from Summer 2019 Event.
	European Combined Grand Fleet、旗艦Warspite、戦場海域に到着。これよりfriend fleetを援護します。全艦、突撃！
Warspite Kai Friend Fleet 2 Play	Her Majesty's Ship, Warspite, has arrived to provide support. Come around the front of the enemy. Open fire!	Returning line from Summer 2019 Event.
	Her Majesty’s Ship、Warspite、援護に参りました。敵正面に回り込みます。砲撃、開始です！
Warspite Kai Friend Fleet 1 Play	Roger that! Begin the attack!	Returning line from Early Fall 2018 Event.
	Warspite、瞭解しました！突入、開始します！
Standard Aircraft Carriers
Ranger Kai Friend Fleet 1 Play	The Atlantic Fleet has arrived on the battlefield. We'll now support the friendly forces. Everyone, let's go.	Returning line from Summer 2022 Event.
	大西洋艦隊、戦場海域に到達。これより、友軍を援護します。みなさん、行きましょう。
Ranger Kai Friend Fleet 2 Play	CV4, USS Ranger, acknowledged. Arriving now!	Returning line from Summer 2022 Event.
	CV4 USS Ranger　了解しました。参ります！
Submarines
I-201 Kai Friend Fleet 1 Play	1st ship of the Sentaka-class, acknowledging. Shall we do this?	Returning line from Spring 2022 Event.
	潜高型一番艦、了解。やってみましょう？
I-203 Kai Friend Fleet 1 Play	SS I-203, acknowledging. Flood the tubes. Ready to fire torpedoes.	Returning line from Spring 2022 Event.
	伊203潜、了解。発射管注水。魚雷戦用意。
Armored Carriers
Victorious Kai Friend Fleet 1 Play	HMS Victorious will now commence supporting the friendly fleet. Fleet, increase speed. Planes, begin take-off!	Returning line from Winter 2022 Event.
	HMS Victorious, これより友軍艦隊を援護します。艦隊増速。艦載機、発艦始め！
Victorious Kai Friend Fleet 2 Play	HMS Victorious, acknowledging. Increase speed. Attack squadrons, begin take-off!	Returning line from Winter 2022 Event.
	HMS Victorious, 了解した。増速。攻撃隊、発艦始め！
Submarine Tenders
Chougei Kai Friend Fleet 1 Play	Chougei Squadron has arrived at the battlefield area. Ready? We will now support the friendly fleet! Everyone, let's go!
	長鯨隊、戦場海域に到達です！いい？これより友軍を援護！皆、行くよ！
Jingei Kai Friend Fleet 1 Play	The Jingei Squadron has arrived on the battlefield. We will now support the friendly fleet. Everyone, let's go!	Returning line from Rainy-Summer 2020 Event.
	迅鯨隊、戦場海域に到達しました。これより、友軍を援護します。みんなさん、行きましょう！
Fleet Oilers
Souya (AGS) Friend Fleet 1 Play	"The ship that makes the impossible, possible"? No, all I did was do the best I could.	Returning line from Spring 2022 Event.
	「不可能を可能にする船」？いえ、精一杯頑張るだけです。
Souya (AGS) Friend Fleet 1 Play	I-I have to...do this.	Returning line from Summer 2021 Event.
	や、やるしか…ありません。

Mechanics

Participation requirements

To take part in any event, a player MUST HAVE at least:

• A 75% sortie win ratio.
• 5 empty ship slots.
• 20 empty equipment slots.

Special Mechanics

In addition to regular Sortie mechanics, events often involve some specific or rarer mechanics :

Map Clearing Medals
Hard	Medium	Easy	Casual

Depending of the HQ level, it is possible to choose between:

• Hard ("operation A", 甲), at HQ 80+
• Medium ("operation B", 乙), at HQ 35+
• Easy ("operation C", 丙), at HQ 1+
• Casual ("operation D", 丁), at HQ 1+

The map difficulty will directly affect the enemy encounters, making them more numerous, with higher stats, or even replacing weaker ships with stonger ones. Additionaly, will vary:

• The maps' phases' gauges (HP/TP),
• The amount of map gimmicks to complete,
• The LoS requirements,
• The maps' rewards,
• The ship Drops.

Changing difficulty is possible but limited:

• When switching from any "lower" difficulty to any "higher" difficulty, the map will fully be reset.
• When switching from any "higher" difficulty to any "lower" difficulty, the map will stay in the very same state it was previously, with only +25% of TP/HP being reset on the current phase's TP/HP bar.
  • Gimmicks might also be reset when applicable, notably the debuffs.

Beginning with the second map, difficulty progression rules apply.

• In order to play a map on Hard difficulty, the prior map must have been completed on either Medium or Hard.
• In order to play a map on Medium difficulty, the prior map must have been completed on either Easy, Medium, or Hard.

To simulate simultaneity of battles in different locations, Fleet Tags conditions & deployment restrictions are employed.

• Ships not already tagged will be tagged with the associated tag of the map phase when deployed. This tag will be applied regardless of the difficulty and can't be removed by any measure before the end of the event.
• One map can use multiple tags, usually separated by phases or fleets.
• Several maps can share one or more tags.
• On Medium or Hard difficulty, ships must have either the same tag as the map/phase they are being deployed to, or have no tag at all.
  • This requirement is sometimes waived on certain maps, mostly on the last map of the event where tags only matter on Hard.
  • Once the event is cleared (last map of the EO), all tag restrictions stop getting enforced on every map (tag routing will still apply).

The Combined Fleet (CF), a fleet assembling both the 1st and 2nd fleets, may come back.

• The CF is only available for the two 1st fleets, where the 2nd fleet can be merged with the 1st one in the "Fleet menu".
• The CF cannot be used in anything outside of event sorties.
• 3 different types of CF are available, depending on the map requirements and the current fleet setup.
• CF with a flagship that carries the Fleet Command Facility, will be able to make use of the Evacuation mechanic.
  • The evacuation requires an escort destroyer.
  • Only one ship can be evacuated per battle.

The Flagship of the Escorting fleet cannot sink!

The Striking Force Fleet (SF), a fleet with seven ships, may come back.

• The SF is only available for the 3rd fleet, where an extra 7th ship can be added in the Fleet menu.
• The SF cannot be used in anything outside of event sorties.
• A SF with a flagship that carries the Striking Force Fleet Command Facility, will be able to make use of the Evacuation mechanic.
  • Only one ship can be evacuated per battle.

The Vanguard Formation can be used.

• This formation will organize the fleet such that the 2 to 3 last ships protect the 2 to 4 first ships of the Fleet.
• This formation is available for single and Strike Force fleets made of 4 to 7 ships.
  • The formation makes ships way more evasive in combat, especially DD, and more accurate against DD, especially PT Imps.
  • This formation is available only during the duration of the event, on the event's maps as well as on the regular maps.

NPC Friendly Fleets (FF) may be introduced to the event.

• FFs act as another unit that appears in particular battles to help aid the fleet when attacking the enemy.
• It is possible to choose between using "normal only" or "normal and powerful" FF in the main menu.
  • Powerful FFs have an additional cost of 6 Instant Constructions for each time they are deployed in a battle.
    • The blowtorches won't be consumed unless a powerful FF appears.
  • If activated, one FF is randomly selected from a preset list of fleets to help the fleet.
  • Which ships are in the fleet will influence which FF can help, excluding the FFs containing ships also in the main fleet.
  • The FF will appear at the start of either day or night battle, depending on the node.
• FFs are usually available sometime after the start of the event, to help Admirals facing difficulties clearing the maps.

Most maps have various bonuses, coming in many shapes. Since most of those bonuses follow the historical formations/tactics used in the relevant operations, they are referred to as "Historical Bonuses". Such bonuses are also found on 7-4 and 7-5.

• The bonuses can be given to:
  • Ships, including all remodels,
  • Ship types, with all ships of a given type sharing a bonus,
    • In those cases, types do not overlap (e.g. a CLT does not count as a CL),
  • Ships Nationalities, with foreigners (non-Japanese) sharing a bonus,
  • Equipment, with some types or specific ones giving a bonus,
    • It is only applied to the ship they are equipped on,
    • For planes, those bonuses won't work if the plane count is 0, but for the Foreign Plane Bonuses.

• Then, bonuses can be applied:
  • Map-wide, working on all nodes
  • On some Nodes only, with usually boss or gimmick nodes having some bonuses,
    • Those node bonuses are often split following the map's phases.
  • Against some abyssals specifically,
    • Usually bosses and their escorts,

Bonuses can stack or not between each other depending on the case.

• Bonuses are either damage, accuracy, and/or evasion,
• Damage and evasion bonuses are "post-cap",
• Some gimmicks like the map's phase can further affect the bonuses (usually the Debuff).

• Completion Gimmicks might be required to further progress the map, demanding certain conditions to be accomplished on a given map to unlock several things :
  • Boss Debuffs, where once the "Last Dance" of the final boss of a given map is reached, its debuffed form can be unlocked.
  • Map phases, where some map areas need to be unlocked, like on 7-2, 7-3, and 7-5.
    • Map areas can either be a path to the next boss, an intermediate path asking for new gimmicks, or a shortcut.
  • LBAS Relocation.
  • Choosing a higher difficulty on an event map will reset it to its initial state.
  • These conditions range from reaching certain nodes, defeating specific nodes, attaining air superiority on certain nodes, and defending against Air Raids. As soon as all the given conditions are met, the map advances to the next phase. Lower difficulties may require fewer conditions to be met to complete the phase. The order in which the gimmicks are completed does not matter.
  • Completing a gimmick will play a "bell" sound once back in the main port (Play Bell Completion Sound Effect).
  • Nodes required to be visited/defeated in gimmicks are highlighted.

• Special Nodes:
  • Emergency Anchorage Repairs:
    • Akashi Kai, Asahi Kai, and Akitsushima Kai can be capable of conducting emergency repairs; however, only Akashi has the full capabilities compared to the others.
    • This consumes Emergency Repair Materials.
    • AR Kai, Akitsushima Kai, and AO Kai will also take advantage of the special routing linked to this mechanic, even if it is not used.
  • Enemy Ambush Nodes, "off-route ambush nodes",
    

    Ambush
    • They serve as a "radar check", with fleets lacking enough Surface Radars being off-routed there,
    • The fleet will not be able to fight against the enemy fleet.
  • Airstrike Supported Battle Nodes, ("ASS nodes") "off-route combat nodes",
    

    ASS
    • The enemy fleet will consist of "normal surface enemies" (4-5 SS so far), followed by "air support enemies" (1-2 CVL so far), bringing air support, and that cannot be attacked,
    • By meeting certain conditions, these nodes can be evaded.
  • "Installation Nodes", being most nodes having one or more Installation in it, and were Barrage Balloons can be deployed.
  • "Atoll Nodes", being some nodes located on atolls, and were Ka-Tsu tanks
    spacial attack can be triggered.

• High-Altitude Abyssal Bombers that are resistant to all types of interceptors other than the Land-Based Rocket Interceptors
  
  .

• Superfortress Air-Raid Sequence, a QTE where the LBAS is attacked by bombers, and where the player must click on a button at the right moment to obtain better interception, using "Land-based high-altitude interceptors".

• AGDP Arctic Gear & Deck Personnel (AGDP) needs to be equipped on CV(B/L), Ise-class Kai Ni, and Akitsu Maru Kai, to sortie them on "arctic" maps. Exclusive to the Fall 2020 Event and Early Spring 2024 Event so far.

Bug: It is possible to save a sunk ship in events:

• When sinking a ship on a "time-limited event map", by closing the game before the battle ends (before battle result screen is shown), and refraining from logging in until a maintenance in which the time-limited map is removed from the game occurs, upon entering the game after the map is removed, the sunken ship will remain in the game, at 0 HP and with the "Sunk" status.
• The ship can be repaired as per normal; removing this status, and sortieing it at 0HP will cause it to return to 1HP.
• Opening the game at any time before the map is removed, or sinking a ship in a normal map will not enact this behavior, regardless of whether a maintenance has occurred or not.

This probably comes from the fact that the game is unable to resolve the battle state due to the map the ship was sunk in, no longer existing. This presumably aborts the game's attempt to check for and delete the sunken ship in question from the roster.

Some error messages you may encounter before a sortie.

• Do note that:
  • Most errors are "general" and can be seen in many situations,
  • Some errors are event only, being liked to event maps/locks/mechanics.

Original message	Translation

• Event mechanics:
  • Help:Event Preparation
  • Ship Locking ("Tags")
  • Combined Fleet (STF/CTF/TCF)
  • Striking Force Fleet (SF)
  • Vanguard Formation ("Spoon")
  • Transport Operation (TP)
  • Debuffs
  • Friendly Fleets (FF)
  • Emergency Anchorage Repair
  • Foreign Plane Bonuses

• General mechanics:
  • Map Mechanics and Nodes
  • Land-Based Air Squadron (LBAS)
  • Support Expeditions
  • Anti-Air Cut-in (AACI)
  • Anti-Installation
  • Line of Sight (LoS)
  • Improving Ship Speed
  • Special Attacks (Touch)

See Also

[edit]Event Only Drops History
Legend: R = Reward, D = Drop, Empty = not implemented yet, N = not dropped
Exclusive Ships	2018 Events		2019 Events				2020 Events			2021 Events			2022 Events			2023 Events		2024 Events
Portrait Name	Phase 1	Early Fall	Winter	Spring	Summer	Fall	Hinamatsuri	Rainy-Summer	Fall	Spring	Summer	Fall	Winter	Spring	Summer	Early Spring	Summer	Early Spring	Summer
Akizuki	R	N	N	D	N	D	N	D	N	N	N	N	D	D	D	D	N	N	D
Prinz Eugen	R	D	N	N	N	N	N	N	D	N	D	N	N	D	D	N	N	N	D
U-511	R	N	N	N	D	N	N	D	D	N	D	N	D	N	D	N	D	N	D
Amagi	R	N	N	N	N	D	N	N	N	N	N	N	N	D	N	D	N	N	N
Katsuragi	R	N	N	D	N	N	N	N	N	N	N	N	D	N	N	D	N	N	N
Littorio	R	D	N	N	D	N	N	N	D	N	D	N	N	N	D	N	D	N	D
Roma	D	D	N	N	D	N	N	N	N	N	D	N	N	N	D	N	D	N	D
Teruzuki	R	N	D	D	N	D	N	D	N	D	N	N	N	D	N	N	D	D	D
Graf Zeppelin	D	D	N	N	N	N	N	D	D	D	D	N	D	N	D	N	D	N	D
Hatsuzuki	R	D	N	N	N	D	N	D	D	D	N	N	D	N	N	D	N	N	D
Iowa	R	N	N	D	N	N	N	N	N	N	N	N	D	N	D	D	N	N	N
Pola	R	D	N	N	D	N	N	N	N	N	D	N	N	N	D	N	D	N	D
Harukaze	D	N	N	N	N	D	N	N	D	D	N	N	N	D	N	D	N	N	N
Aquila	D	D	N	N	D	N	N	N	D	N	D	N	N	N	D	N	D	N	D
I-26	D	D	N	N	D	D	N	D	N	D	N	D	N	N	D	D	D	D	N
Commandant Teste	R	D	N	D	D	N	N	N	D	N	N	D	N	D	D	N	D	N	D
Matsukaze	R	D	N	N	N	D	N	D	D	D	N	N	N	D	N	D	N	N	N
I-14	R	D	N	N	N	N	N	D	N	N	N	N	N	D	N	N	D	D	N
I-13	D	D	N	N	N	D	N	D	N	N	N	N	N	D	N	N	D	D	N
Kasuga Maru	R	D	D	D	N	D	N	D	D	D	N	D	D	N	N	N	N	N	N
Gangut	R	N	N	D	N	N	N	D	D	N	D	N	N	N	N	N	N	N	N
Shimushu	D	D	D	D	N	N	N	D	D	D	D	D	N	D	D	N	D	D	N
Kunashiri	D	D	D	D	N	D	N	D	N	D	D	D	N	N	D	N	D	D	N
Etorofu	D	D	D	D	D	D	D	D	N	D	D	D	D	D	D	N	D	D	N
Hatakaze	R	N	N	N	N	D	N	D	D	D	N	D	N	D	N	D	N	N	N
Richelieu	R	D	N	N	D	N	D	N	D	N	D	N	N	N	D	N	D	N	D
Luigi Torelli	D	D	N	D	D	N	N	D	D	N	D	N	D	N	D	N	D	N	N
Matsuwa	D	D	N	D	N	D	D	D	D	D	D	N	D	D	D	N	N	D	N
Suzutsuki	R	N	D	D	N	N	N	D	N	D	N	N	D	D	N	D	D	N	N
Sado	R	D	N	D	D	D	D	D	D	D	D	D	D	D	D	N	N	N	D
Tsushima	D	D	D	D	D	D	D	D	D	D	N	D	D	D	D	D	D	N	D
I-400	D	D	N	D	N	N	N	D	N	N	N	D	N	D	D	D	N	D	D
Hiburi	R	D	D	D	D	D	N	D	D	D	N	D	D	D	D	N	N	D	N
Gambier Bay	R	N	N	D	N	N	D	D	D	N	N	N	N	D	D	D	D	N	D
Intrepid	R	N	N	D	N	N	N	N	N	N	N	D	N	D	D	D	D	D	D
Daitou	D	D	D	D	D	D	N	D	D	D	N	D	D	D	D	N	D	N	D
Jervis	D	N	N	N	D	N	N	N	D	N	D	N	D	N	D	N	D	N	D
Hamanami	D	N	D	D	D	D	D	D	D	D	D	N	D	D	D	N	N	N	D
Tashkent	D	N	N	D	D	N	N	D	D	N	N	N	N	N	N	N	N	N	D
Samuel B. Roberts		N	N	D	N	N	D	N	N	N	N	N	D	D	D	N	D	D	N
Fukae		D	D	D	D	D	D	D	N	N	N	D	D	D	D	N	N	N	N
Shinyou		R	N	D	D	D	N	D	D	N	D	D	D	D	D	N	D	N	N
Maestrale		R	N	N	D	N	N	N	N	N	D	N	N	N	D	N	D	N	D
Nelson		R	N	N	D	N	N	N	D	N	D	N	N	N	D	N	D	D	D
Gotland		D	D	D	D	N	D	N	D	N	N	N	N	D	N	N	D	N	D
Minegumo			R	N	D	D	D	D	N	D	N	N	N	D	N	N	N	N	N
Nisshin			R	N	N	N	N	D	N	D	N	N	N	D	N	D	N	D	N
Hayanami			D	D	D	D	D	D	D	D	D	N	D	D	D	N	N	N	D
Johnston			D	D	D	N	N	D	N	N	N	N	N	D	D	D	D	D	N
Giuseppe Garibaldi				R	N	N	N	N	D	N	D	N	N	N	D	N	D	N	N
Colorado				R	N	N	N	N	D	D	N	N	D	D	D	N	N	D	N
Hachijou				R	N	D	N	D	N	D	D	D	D	D	D	D	N	D	N
Ishigaki				D	N	D	N	D	N	D	D	D	D	D	D	D	N	D	N
Fletcher				D	N	D	N	D	N	D	N	D	N	D	D	D	D	D	D
Duca degli Abruzzi					R	N	N	N	N	N	D	N	N	N	D	N	D	N	N
Janus					R	N	N	N	D	N	D	N	N	N	D	N	D	N	D
Mikura					D	D	N	D	N	D	N	D	D	D	N	D	N	N	D
Grecale					D	N	N	N	D	N	D	N	N	N	D	N	D	N	D
Perth						R	N	D	D	D	D	N	D	D	D	N	D	N	N
Shinshuu Maru						R	N	N	D	D	N	D	D	N	N	D	D	N	D
Atlanta						R	N	N	N	N	N	N	D	N	N	D	D	D	D
De Ruyter						D	N	D	N	N	N	N	D	N	N	N	D	N	N
Houston						D	N	D	N	D	N	N	D	N	D	D	D	D	N
Hirato						D	D	D	N	D	N	D	D	D	D	D	N	N	N
Akishimo						D	N	D	N	D	N	N	N	D	D	N	D	N	N
Usugumo								R	N	N	N	D	N	D	D	D	D	D	D
I-47								R	N	D	N	N	D	D	D	N	N	D	N
Matsu								R	N	N	N	D	D	N	N	D	D	N	N
South Dakota								R	N	D	N	N	D	D	D	D	D	D	N
Hornet								R	N	D	N	N	D	D	D	D	D	D	D
Jingei								D	D	D	N	N	D	D	D	D	D	D	D
Kaiboukan No.4								D	D	D	D	D	D	D	N	D	D	N	N
Ariake								D	N	D	D	N	D	D	N	D	D	N	D
Helena								D	N	D	N	N	D	N	D	D	D	D	N
Yashiro								D	N	D	N	D	D	D	N	D	N	D	D
Washington									R	D	D	N	D	N	D	D	D	D	N
Take									R	N	N	D	D	N	N	D	D	N	D
Scirocco									D	N	D	N	N	N	D	N	D	N	D
Sheffield									D	N	D	N	D	N	D	N	D	D	D
Momo										R	N	D	D	N	N	N	D	N	N
Northampton										R	N	N	N	N	D	N	N	D	N
Honolulu										R	N	N	N	N	N	D	D	D	D
I-203										D	N	D	D	D	N	D	D	N	N
Makinami										D	N	N	N	D	N	N	N	N	N
Suzunami										D	D	N	N	D	D	N	D	N	D
Souya (AGS)										D	D	D	D	D	N	D	D	D	N
Conte di Cavour											R	N	N	N	N	N	N	N	D
Victorious											R	N	D	N	N	N	D	D	D
Chougei											D	D	D	D	D	N	D	D	D
Kaiboukan No.30											D	D	D	D	N	D	D	N	N
Scamp												R	N	D	N	D	D	D	N
Shounan												D	D	D	D	N	D	D	D
Yamashio Maru													R	N	N	D	D	N	N
Fuyutsuki													R	N	N	D	D	N	D
Ume													D	N	N	D	D	N	N
Tamanami													D	D	N	N	N	N	N
Hayashio														R	N	N	N	N	D
Maryland														R	N	D	N	N	N
I-201														D	N	D	N	N	N
Kurahashi														D	N	N	N	D	D
Langley															R	D	N	N	D
Ranger															R	D	D	D	D
Jean Bart															R	N	D	N	D
Ukuru															D	N	D	N	D
Natsugumo															D	N	N	N	D
Brooklyn															D	D	D	D	D
Massachusetts															D	D	D	D	N
Kumano Maru																R	D	N	N
Tuscaloosa																R	D	D	N
																D
No.101 Transport Ship																R	D	D	D
Yuugure																D	D	N	D
Heywood L. Edwards																D	D	D	N
Noumi																D	N	N	D
Inagi																	R	N	D
																	D
Shirakumo																	R	D	N
Nevada																	R	N	D
																	D
Rodney																	R	N	D
Kaiboukan No.22																	D	N	N
Asahi																	D	D	N
Salmon																	D	D	N
C.Cappellini																	D	D	D
Javelin																	D	N	D
Drum																		R	N
I-41																		R	N
I-36																		D	N
Heian Maru																		D	D
Gloire																			R
																			D
Lexington																			R
Mogador																			D
Valiant																			D
Phoenix																			D
This table includes all ships that are currently not permanently available outside of events (Limited Time Drops are still counted as "event drops").

Time remaining until Event ends [3]: 1 May 2023 11:00:00 +0900 The Early Spring 2023 Event has ended!
KC anniversary maintenance has started, time remaining until maintenance ends [4]: (~4h event pause) 23 April 2023 20:30:00 +0900 The maintenance has ended. See 2023-04-23 patch notes.
Early Spring 2023 Event Hub Overview Introduction & Overview Main Operation Maps Extra Operation Maps E-1 | E-2 | E-3 E-4 | E-5 | E-6