Time until the end of the event:

12 May 2025 11:00:00 +0900 Event Has Ended!

Spring 2025 Event Hub Overview
Introduction & Overview	1st Stage Operations	2nd Stage Operations
Introduction & Overview	E-1 \| E-2 \| E-3	E-4 \| E-5 \| E-6

The Spring 2025 Event, is launched on the 8th of March, with a launch of the 2nd part scheduled for the 23rd of March. The event is planned to last 1 month and a half. It is a "Large Scale Event".

The 1st Stage Operations are titled "Hokkaido Defence Operation", a what-if scenario,
The 2nd Stage Operations are titled "Operation Rei-Go Part 2".

The event is still referred to as a "Winter Event" in the API.

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

Historical Background

1st Stage Operations - "Hokkaido Defence Operation"

The 1st Stage Operations have been announced to be a what-if scenario about an "Hokkaido Defence Operation".

See: [1].
Northeastern Air Group

This operation mainly revolves around the planned invasion of Northern Japan by the USSR in the last stages of the war. This initial plan was canceled after the Soviet experiences fighting the Japanese forces in the Kuriles. During the New Year 2025 Live event, there was mention and talk of the 11th Tank Regiment having a key role or bonuses. The historical note and reference for the 11th Tank Regiment was that their engagements with the Soviets during the war's end happened in Manchuria, Sakhalin, and the Kuriles. The Soviets thought it would be easy to defeat the Japanese with their numerous soldiers and more modern tanks compared to the poorly equipped Japanese Army (most of their best units and equipment had to be sent to fight in the Pacific over the years), yet despite the advantages, the Japanese resistance was very stiff. The 11th Tank regiment, along with other Imperial Japanese Army units, played a key role in the defense operation, and the fighting here showed the Russians the tenacity of the Japanese, which made Soviet commanders rethink their island-hopping campaign and the planned Hokkaido invasion. One of the reasons Soviet commanders underestimated the Japanese was that their armor technology was obsolete, and their T-34 would have no trouble fighting them. However, the Japanese did field a decent tank during WW2, and it was the Shinhoto Chi-Ha (an "improved" Chi-Ha tank utilizing the high-velocity 47 mm Type 1 gun). These tanks proved to be a decent match against the M4 Sherman in the American island-hopping campaign, particularly in the major tank battles in the Philippines, and later against the Soviet T-34 in the last days of the war. This was because the gun was able to penetrate the side and rear armor of both Allied tanks and were primarily used in ambush tactics.

Involved Forces

The following list of historical ships is based on the kanmusu currently implemented:

Hokkaido Defence Forces

5th Fleet
CA Ashigara Nachi
CL Abukuma Kiso Tama
DD Usugumo Shirakumo Akebono Ushio Hatsuharu Wakaba Hatsushimo Kasumi Shiranui

Main Forces
Toku Daihatsu Landing Craft + 11th Tank Regiment Type 97 Torpedo Bomber Kai (Northeastern Air Group) Arctic Gear & Deck Personnel

Soviet Navy Vessels
FBB
Gangut Dva
CL
Kirov Kai
DD
Tashkent Kai Verniy

2nd Stage Operations - "Operation Rei-Go Part 2"

The 2nd Stage Operations have been announced to be "Operation Rei-Go Part 2".

Rei-Go Part 1 was the Winter 2016 Event.
See: [2].

On the 24th of December 1944, a Japanese Navy force containing two cruisers: Ashigara and Ōyodo; plus eight destroyers: Kiyoshimo, Asashimo, Kasumi, Kaya, Kashi, and Sugi; departs Camranh Bay off Indochina (Vietnam) as part of "Operation Rei-Go" a raiding force to bombard the San Jose beachhead on the Philippine Island of Mindoro. On the evening of 26th of December 1944, the force was spotted and attacked by B-25 Mitchells and PT Boats. Kiyoshimo sustained heavy damage and was eventually sunk. Between 11 PM and 1 AM the next day, the remaining force bombards the beachhead area but causes little damage. This was one of the last Japanese surface unit attacks on an American beachhead during the Pacific War. The next day, the survivors return to Camranh Bay. (Pacific Wrecks)

The main goal of the operation was to counter "Operation Love III", the US seizure of a sizeable lodgement on Mindoro island in the central part of the Japanese-occupied Philippine islands group (15/21 December 1944).

There is a heavy hint that the Extra Operation will incorporate many things from the official KanColle Operation Rei Go 1944 Stage Play which ran for a few weeks prior to the start of the Event.

See: [3]

Involved Forces

The following list of historical ships is based on the kanmusu currently implemented:

Operation Rei Go

Operation Love III

Penetration Force
CA/CL Ashigara Ooyodo
DD Kasumi Kiyoshimo Asashimo Matsu-class: Kaya, Sugi, Kashi

Reserve Forces
BB Ise Hyuuga
CV Ryuuhou Unryuu (sunk before the operation)
DD Hatsushimo Hibiki

USN Forces
Heavy Cover and Carrier Group
3 BB (West Virginia, Colorado, New Mexico), 6 CVE, 3 CL, 18 DD
Mindoro Attack Group
1 CL, 12 DD, 8 AP, 30 LST, 12 LCGM, 31 LCI, 7 AM
Close Covering Group
1 CA, 2 CL, 7 DD, 23 PT
Slow Tow Convoy
3 DD, 2 DE, 6 AT, 1 AO, 2 LST

Other Forces
CL Phoenix
DD Heywood L. Edwards

- "Operation Rei-Go Stage Play"

During the New Year Live 2025, C2 announced that they are collaborating with AVEX, ClubEX, and Kadokawa for a KanColle Stage Play using the theme of Operation Rei Go. In the lead up to the Spring 2025 Event and the stage play various information were revealed. Also many hints were given on how the play can be used as a reference for what to expect for the Extra Operations of the KanColle Spring 2025 Event. The stage actresses were made up of famous Japanese Theatre Actresses, Models, Personalities, and many veteran members of the Kanmusu Yugekitai who were official cosplayers and talents who perform on official Kancolle Live Events The following is the list of the cast for the play:

Kanmusu:
- Fuyuna Asakura as Ise
- Shiori Inaoka as Hyuuga
- Nozomi Shinohara as Ryuuhou
- Kaede Hanzawa as Ooyodo
- Ruka Aizawa and Miki Sawada as Ashigara
- Hina Kanzaki as Kiyoshimo
- Aoi Shono Asashimo
- Rio Tsukiyama as Kasumi
- Airi Wakamatsu as Hatsushimo
- Fuu Iwaki as Hibiki
- Saki Tateno as Sugi
- Haruna Hasegawa as Kashi
- Akaike Sayaka as Kaya

Abyssal Fleet:
- Hikaru Watanabe as the Abyssal Deep Sea Diva α
- Misaki Tanaka as the Abyssal Deep Sea Diva β
- Chie Nakahara as Abyssal Supply Depot Princess
- Ruka Kurata as the Abyssal Airfield Princess
- Nanaka Suzuki as Abyssal Heavy Cruiser Princess
- Natsumi Kitamura Abyssal New Light Cruiser Princess P
- Hinako Asakura as Abyssal New Light Cruiser Princess B
- Asuka Nagatsuki as Abyssal Ne-class Kai Heavy Cruiser
- Nao Tanaka as Abyssal Destroyer Ra-class α
- Haruka Tsuda Abyssal Destroyer Ra-class β
- Karin Mizuno as Abyssal Ra-class Destroyer γ
- Seina Ōotaku as Abyssal Ra-class Destroyer δ

It is highly suggested to reserve the Kanmusu who appeared in the stage play as well as the historical ships that took part in the shelling of San Jose during the historic Operation Rei Go for the locks of the Extra Operations Maps.

Although Kashi, USS Boise, & USS Louisville made their debut in the stage play, they have not made their appearance in the game yet.

Information

Quick Info Table

Classification	Map	Name	Fleet Type	LBAS	Friendly Fleet	Notes
1st Stage Operations	E-1	Hokkaido Defence Operation	Single Striking	1/2	TBA	AGDP Required for carriers.
	E-2	Otoineppu Defense Line	Striking Combined	2	TBA	AGDP Required for carriers.
	E-3	The Rumoi Sea Fleet's Decisive Battle	Striking Combined	2/3	TBA	AGDP Required for carriers.
2nd Stage Operations	E-4	War Clouds off the Spratly Islands	Striking Combined	2/3	TBA
	E-5	Second Operation Rei-Go	Striking Combined	1/3	TBA
	E-6	Return of the Second Striking Force	Striking Combined	TBA	TBA	Lock limited to Hard Only can be mixed during phases 2 & 3 Once E-6 is cleared, tag restrictions stop getting enforced on every map!

Fleet Locking Table

	E-1	E-2	E-3	E-4	E-5	E-6
104th Squadron	Gimmick 1 & 2 Single		Gimmick 2 Striking
1st Fleet	Gimmick 2 Phase 1 Striking	Gimmick 1 & 2 Striking
5th Fleet		Phase 1 & 2 Combined	Gimmick 1 Phase 1 Striking
Combined Fleet			Gimmick 2 Phase 2 & 3 Combined
Southwestern Area Unit				Gimmick 1 Phase 1 & 2 Striking
Operation Rei-go Unit				Phase 3 Combined	Phase 2 & 3 Combined	Gimmick 1 Phase 2 & 3 mix Striking
Cavite Reinforcement Unit					Gimmick 1 Phase 1 Striking
31st Squadron					Gimmick 1 Striking
4th Carrier Division						Gimmick 2 Phase 1 Phase 2 & 3 mix Combined
2nd Strike Force						Phase 2 & 3 mix Combined

Event-Wide Bonuses

Note: Ship-specific bonuses are displayed here.

Ship class bonuses are excluded from this table for simplicity but still apply.

Do note that several of the 5th fleet members will have historical significance in the "2nd Stage Operations"!

Event-Wide Bonus Ships: 1st Stage Operations

Mapwide

J/K/M/O

Mapwide

U

V

W

Mapwide

E/F

G

R/U

X

Ootomari

Souya

Fleet Oiler
(AO)

1.28

5th Fleet Heavy Cruisers
Ashigara Nachi

Heavy Cruiser
(CA)

1.16

1.2992

1.2296

1.3456

1.16

1.2064

1.2412

1.2296

5th Fleet Light Cruisers
Abukuma Tama Kiso

Light Cruiser / Torpedo Cruiser
(CL/CLT)

1.2528

1.218

1.2992

1.2296

1.2528

5th Fleet Destroyers
Akebono Hatsuharu Hatsushimo Kasumi Shiranui Ushio Usugumo Wakaba

Destroyer
(DD)

1.2296

1.2064

1.2528

1.218

1.2296

Soviet Ships
Gangut Kirov Tashkent Verniy only

Multiple

1.11

1.12

1.13

1st Fleet
Fusou Yamashiro Ise Hyuuga Nagato Mutsu Kako Furutaka Kinugasa Tatsuta Kitakami Ooi Sendai Fubuki Shirayuki Hatsuyuki Isonami Uranami Ayanami Shikinami Amagiri Sagiri Akatsuki Hibiki Ikazuchi Inazuma Asashio Yamagumo Tamanami Suzunami Hayanami Okinami Kishinami Note: Verniy stacks with her Soviet Ships bonus

Multiple

1.16

Event-Wide Bonus Ships: 2nd Stage Operations

Map-wide

Node L

Node R

Nodes D/T

Node W

Map-wide

Node K

Nodes M/N/Q

Node R

Node T

Nodes U/U2/X

Node Z

Map-wide

Node F

Node I

Node O

Node V

Node X

Node Z

Group A (Reserve Forces)
Ise Hyuuga Haruna Ryuuhou Haguro Hibiki Shigure Hatsushimo Ushio

Multiple

1.13x

1.03x

1.04x

-

1.13x

1.05x

-

1.17x

1.04x

1.08x

1.11x

1.08x

1.14x

Group B
Kitakami Yukikaze Amatsukaze Isokaze Hamakaze Take Ume Isuzu Kashima

Multiple

1.08x

1.04x

1.05x

1.08x

1.06x

1.12x

-

1.04x

-

Group C (Rei-Go fleet)
Ashigara Ooyodo Kasumi Asashimo Kiyoshimo Sugi Kaya

Multiple

1.11x

-

1.05x

1.08x

1.11x

-

1.05x

1.07x

1.09x

1.03x

1.11x

1.14x

-

1.14x

1.16x

1.18x

Ashigara

CA

-

1.06x

-

1.09x

-

Ooyodo

CL

1.04x

Kasumi

DD

1.08x

Sugi

Kaya

DD

-

1.12x

Yuugumo-class
Yuugumo Makigumo Kazagumo Naganami Makinami Takanami Tamanami Suzunami Fujinami Hayanami Hamanami Okinami Kishinami Asashimo Hayashimo Akishimo Kiyoshimo

DD

1.05x

-

Matsu-class
Matsu Momo Take Ume Sugi Kaya

DD

1.07x

1.09x

Minneapolis

Phoenix

Fletcher

Heywood L. Edwards

CA / CL / DD

-

1.04x

-

1.04x

Note that Ashigara, Ooyodo, Kasumi, Asashimo, Kiyoshimo, Take, Sugi and Kaya stack bonuses from multiple different groups.

New Mechanics

E-2 and E-5 have a new kind of Transport Operation, where "tanks" do work better:

Landing Operation success screen

Landing Operation tank counter

During "Landing Operation", the TP drain formula is altered, with regular modifiers being nerfed, and tanks gaining additional bonuses.

[math]\displaystyle{ \text{Mod}_\text{map} }[/math] is the map-dependent nerf moddifier, reducing the value of regular TP sources.

Event	Map	[math]\displaystyle{ \text{Mod}_\text{map} }[/math]
Spring 2025 Event	E-2	0.65
Spring 2025 Event	E-5	0.8
Fall 2025 Event	E-2	0.75

Tank TP

The additional "tank bonus" given by equipment Landing Operations is as follows:

The values are from the Spring 2025 Event.

Landing Operation - [math]\displaystyle{ \text{TP}_\text{tank} }[/math]
Type	Equipment	Spring 2025 [4] [5]		Fall 2025 [6]
Type	Equipment	E-2	E-5	E-2
	Daihatsu Landing Craft	0	0	0
	DLC + T89 Tank	9	6	8
	Toku Daihatsu Landing Craft	0	0	0
	Toku DLC + 11th Reg	41	12	13
	M4A1 DD	19	14	14
	Armed Daihatsu	0	0	0
	Soukoutei	0	0	0
	DLC + Panzer II	16	8	10
	Toku DLC + Ho-Ni Tank	35	22	15
	Toku DLC + Panzer III	22	10	13
	Toku DLC + Chi-Ha	16	11	11
	Toku DLC + Chi-Ha Kai	23	13	13
	Toku DLC + Panzer III J	37	15	17
	Ka-Mi tank	8	18	10
	Ka-Tsu tank	5	15	9
	Ka-Tsu tank Kai	6	18	11
	Army Infantry Corps	15	5	5
	Chi-Ha	17	8	7
	Chi-Ha Kai	23	10	9
	Infantry + Chi-Ha Kai	38	13	14
	Drum Canisters	0	0	0
	Rations	0	0	0

Seaplane Base

E-5's LBAS is a bit different. It is supposed to be a seaplane base coupled with a light field runway, and so has a severe melus on most planes.

It cannot be attacked by air raids.

New Ships

AO	Ootomari	E-1 & E-2 Drop
SS	Wahoo	E-2 Reward & E-3 Drop
DD	Kaya	E-2, E-3, E-4, E-5, E-6 Drop
CL	Kirov	E-3 Reward
DD	Sugi‎	E-4, E-5, E-6 Drop
AO	Shimane Maru	E-5 & E-6 Drop
CA	Minneapolis‎	E-6 Reward

Matsu-class "Kashi" have been announced but not introduced this event,
USS Boise (CL-47) and USS Louisville (CA-28) have been teased but not introduced this event.

Returning Ships

A non-exhaustive list of "notable returning ships". Please refer to drop table of each individual map for more complete lists.

See below for the full list of returning "Event Only Drops",
See uptodate drop database via KCnav, or via Discord bots.

Notable returning ships
[Toggle Names]

(F)BB
Gangut	E-3	Musashi	E-6	Iowa	E-6

CV(B/L)
Langley	E-2	Lexington	E-6	Saratoga	E-6
Hornet	E-6	Intrepid	E-6

CA/CL
Gotland	E-1	Honolulu	E-5	Phoenix	E-5
Brooklyn	E-5	Northampton	E-5	Tuscaloosa	E-5 & E-6

DD/DE
Akizuki	E-1	Hatsuzuki	E-1	Suzutsuki	E-1 & E-5
Tashkent	E-2	Matsu	E-2 & E-4	Take	E-2 & E-4
Ume	E-2, E-4, & E-5	Momo	E-2, E-4, & E-5	Hayashio	E-4
Ariake	E-4	Yuugure	E-4 & E-5	Inagi	E-4
Fuyutsuki	E-5

SS(V)
Scamp	E-2	I-36	E-2 & E-6	I-26	E-6

Aux
Akitsu Maru	E-1	No.101 Transport Ship	E-2	Yamashio Maru	E-2
Souya (AGS)	E-2 & E-3	Kamoi	E-3	Kumano Maru	E-3
Heian Maru	E-3 & E-6

New Equipment

18cm/57 Triple Main Gun Mount	Medium Caliber Main Gun	E-3 reward
10cm/56 Single High-angle Gun Mount (Concentrated Deployment)	Sec Secondary High-angle Gun	E-3 reward
Type 0 Fighter Model 62 Kai (Night Fighter-bomber)	Night Dive Bomber	E-5 & E-6 reward
Type 0 Fighter Model 62 Kai (Skilled/Night Fighter-bomber)	Night Dive Bomber	E-6 reward

New Enemy Vessels

New Enemy 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).

Friendly Fleets are available on:
- Soon™

Voice Lines

Spring 2025 Event/Voice Lines

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 stronger ones. Additionally, will vary:

The maps' phases' gauges (HP/TP),
The amount of map gimmicks to complete,
The routing requirements, notably LoS and Tags,
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 onwards:

It is possible to play any map on Medium/Easy/Casual difficulties in all situations.
It is only possible to play a map on Hard difficulty if the prior map has been completed on either 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).
See here for the full list of ship sinkings and such, for lock planning.

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.

For more information on this topic, see Transport Operation.

Transport Operations (TP) are an event mechanic, where unlike the usual map-clearing mechanic, completing a Transport Operation does not require to kill the boss.

The objective of the Transport Operation is to deplete a Transport Point (TP) gauge/bar.
The amount of TP that needs to be depleted varies by difficulty and map.
Using specialized ships and equipment will increase the amount TP of the fleet, making the depletion faster.
- Landing Craft, Drum Canisters , Amphibious Vehicles, Rations
  
  , and Landing Forces will increase the TP in the right situations.

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.
  - It is important to note that the debuff will stay applied to the map after clearing it, making subsequent farming easier. Clearing a map without debuffing it will also apply the debuff.
- 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.
- "Balloon 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)

Info:
- full list of ship sinkings and such (for lock planning)

Farming

LBAS Leveling

It is possible to regain Proficiency for LBAS aircraft on the following spots:

Map	Amount of LBAS	LBAS range	Recommended Fleets	Route
E-1	1	2	1 SS(V)	1 D 1 B B1
E-2	2	6	1 SS(V)	1 A A1
E-3	2	1	2 SS(V)	1 H H1 H3

Resource Farming

Resource Nodes are present on this event and can bring some substantial resources:

Map	Nodes	Resource	Gains	Cap	Recommended Fleets	Route	Lock	Notes
E-1	C2		33	144?	0-1 CVL, 1 CL/AO, 4/5 DD	1 A B B2 C1 C2		Type A: +7.5 Drum : +6

Special Resource Nodes Gain Modifiers Type 1
Equipment / Ship			Bonus Gains (per DLC / Ship)^[1]
Type		Name	2-5		5-4 I	5-5 E	7-4 O
Type		Name	M	N	5-4 I	5-5 E
	A	Toku Daihatsu Landing Craft Daihatsu Landing Craft Armed Daihatsu DLC + T89 Tank DLC + Panzer II Soukoutei Toku DLC + Ho-Ni Tank	5.0	10.0	15.0	10.0	7.0	10.0
	A	Ka-Mi Tank Ka-Tsu Tank Ka-Tsu Tank Kai	5.0	10.0	15.0	10.0	7.0	10.0
	B	Drums	10.0	5.0	10.0	15.0	8.0	6.0
	C	Toku DLC + 11th Reg M4A1 DD Toku DLC + Panzer III Toku DLC + Chi-Ha Toku DLC + Chi-Ha Kai Toku DLC + Panzer III J	0.0
Ship		Souya	0.0	0.0	0.0	0.0	22.0	16.0
		AO					15.0	10.0
		BBV					10.0	10.0
		LHA					8.0	7.0
		CVL					7.0	4.0
		AV					6.0	5.0
		AS					5.0	5.0
		Other types					0.0	0.0

Resource Cap			150	150	180	180	200	120
Random Resource Increments			0
Notes: ↑ If the total value has a decimal, only the rounded-down value is applied. Sources: [7] [8] [9]

[edit]Event Only Drops History
Legend: R = Reward, R & D = Reward & Drop, 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		2025 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	Spring	Fall
Akizuki	R	N	N	D	N	D	N	D	N	N	N	N	D	D	D	D	N	N	D	D	D
Prinz Eugen	R	D	N	N	N	N	N	N	D	N	D	N	N	D	D	N	N	N	D	N	D
U-511	R	N	N	N	D	N	N	D	D	N	D	N	D	N	D	N	D	N	D	N	N
Littorio	R	D	N	N	D	N	N	N	D	N	D	N	N	N	D	N	D	N	D	N	N
Roma	D	D	N	N	D	N	N	N	N	N	D	N	N	N	D	N	D	N	D	N	N
Teruzuki	R	N	D	D	N	D	N	D	N	D	N	N	N	D	N	N	D	D	D	N	D
Graf Zeppelin	D	D	N	N	N	N	N	D	D	D	D	N	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	D	D
Aquila	D	D	N	N	D	N	N	N	D	N	D	N	N	N	D	N	D	N	D	N	N
I-26	D	D	N	N	D	D	N	D	N	D	N	D	N	N	D	D	D	D	N	D	N
Commandant Teste	R	D	N	D	D	N	N	N	D	N	N	D	N	D	D	N	D	N	D	N	D
I-14	R	D	N	N	N	N	N	D	N	N	N	N	N	D	N	N	D	D	N	N	N
I-13	D	D	N	N	N	D	N	D	N	N	N	N	N	D	N	N	D	D	N	N	N
Gangut	R	N	N	D	N	N	N	D	D	N	D	N	N	N	N	N	N	N	N	D	D
Shimushu	D	D	D	D	N	N	N	D	D	D	D	D	N	D	D	N	D	D	N	D	D
Kunashiri	D	D	D	D	N	D	N	D	N	D	D	D	N	N	D	N	D	D	N	D	D
Etorofu	D	D	D	D	D	D	D	D	N	D	D	D	D	D	D	N	D	D	N	D	D
Luigi Torelli	D	D	N	D	D	N	N	D	D	N	D	N	D	N	D	N	D	N	N	N	N
Suzutsuki	R	N	D	D	N	N	N	D	N	D	N	N	D	D	N	D	D	N	N	D	D
Sado	R	D	N	D	D	D	D	D	D	D	D	D	D	D	D	N	N	N	D	N	N
I-400	D	D	N	D	N	N	N	D	N	N	N	D	N	D	D	D	N	D	D	N	N
Gambier Bay	R	N	N	D	N	N	D	D	D	N	N	N	N	D	D	D	D	N	D	N	N
Intrepid	R	N	N	D	N	N	N	N	N	N	N	D	N	D	D	D	D	D	D	D	N
Jervis	D	N	N	N	D	N	N	N	D	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	D	D
Tashkent	D	N	N	D	D	N	N	D	D	N	N	N	N	N	N	N	N	N	D	D	D
Samuel B. Roberts	^{[EDT 1]}	N	N	D	N	N	D	N	N	N	N	N	D	D	D	N	D	D	N	N	D
Fukae	^{[EDT 2]}	D	D	D	D	D	D	D	N	N	N	D	D	D	D	N	N	N	N	D	N
Shinyou		R	N	D	D	D	N	D	D	N	D	D	D	D	D	N	D	N	N	N	N
Maestrale		R	N	N	D	N	N	N	N	N	D	N	N	N	D	N	D	N	D	N	N
Nelson		R	N	N	D	N	N	N	D	N	D	N	N	N	D	N	D	D	D	N	D
Gotland		D	D	D	D	N	D	N	D	N	N	N	N	D	N	N	D	N	D	D	D
Minegumo			R	N	D	D	D	D	N	D	N	N	N	D	N	N	N	N	N	N	N
Nisshin			R	N	N	N	N	D	N	D	N	N	N	D	N	D	N	D	N	N	N
Hayanami			D	D	D	D	D	D	D	D	D	N	D	D	D	N	N	N	D	D	D
Johnston			D	D	D	N	N	D	N	N	N	N	N	D	D	D	D	D	N	N	D
Giuseppe Garibaldi				R	N	N	N	N	D	N	D	N	N	N	D	N	D	N	N	N	N
Colorado				R	N	N	N	N	D	D	N	N	D	D	D	N	N	D	N	N	D
Hachijou				R	N	D	N	D	N	D	D	D	D	D	D	D	N	D	N	D	N
Ishigaki				D	N	D	N	D	N	D	D	D	D	D	D	D	N	D	N	N	N
Fletcher				D	N	D	N	D	N	D	N	D	N	D	D	D	D	D	D	N	N
Duca degli Abruzzi					R	N	N	N	N	N	D	N	N	N	D	N	D	N	N	N	N
Janus					R	N	N	N	D	N	D	N	N	N	D	N	D	N	D	N	D
Grecale					D	N	N	N	D	N	D	N	N	N	D	N	D	N	D	N	N
Atlanta						R	N	N	N	N	N	N	D	N	N	D	D	D	D	N	D
Akishimo						D	N	D	N	D	N	N	N	D	D	N	D	N	N	D	D
Usugumo								R	N	N	N	D	N	D	D	D	D	D	D	D	D
I-47								R	N	D	N	N	D	D	D	N	N	D	N	N	N
Matsu								R	N	N	N	D	D	N	N	D	D	N	N	D	D
South Dakota								R	N	D	N	N	D	D	D	D	D	D	N	N	D
Hornet								R	N	D	N	N	D	D	D	D	D	D	D	D	N
Jingei								D	D	D	N	N	D	D	D	D	D	D	D	N	D
Kaiboukan No.4								D	D	D	D	D	D	D	N	D	D	N	N	N	N
Ariake								D	N	D	D	N	D	D	N	D	D	N	D	D	D
Helena								D	N	D	N	N	D	N	D	D	D	D	N	N	N
Yashiro								D	N	D	N	D	D	D	N	D	N	D	D	D	N
Washington									R	D	D	N	D	N	D	D	D	D	N	N	N
Take									R	N	N	D	D	N	N	D	D	N	D	D	D
Scirocco									D	N	D	N	N	N	D	N	D	N	D	N	N
Sheffield									D	N	D	N	D	N	D	N	D	D	D	N	D
Momo										R	N	D	D	N	N	N	D	N	N	D	N
Northampton										R	N	N	N	N	D	N	N	D	N	D	N
Honolulu										R	N	N	N	N	N	D	D	D	D	D	D
I-203										D	N	D	D	D	N	D	D	N	N	N	N
Makinami										D	N	N	N	D	N	N	N	N	N	N	N
Suzunami										D	D	N	N	D	D	N	D	N	D	D	N
Souya (AGS)										D	D	D	D	D	N	D	D	D	N	D	D
Conte di Cavour											R	N	N	N	N	N	N	N	D	N	N
Victorious											R	N	D	N	N	N	D	D	D	N	D
Chougei											D	D	D	D	D	N	D	D	D	N	N
Kaiboukan No.30											D	D	D	D	N	D	D	N	N	N	N
Scamp												R	N	D	N	D	D	D	N	D	D
Shounan												D	D	D	D	N	D	D	D	D	N
Yamashio Maru													R	N	N	D	D	N	N	D	D
Fuyutsuki													R	N	N	D	D	N	D	D	D
Ume													D	N	N	D	D	N	N	D	N
Tamanami													D	D	N	N	N	N	N	D	N
Hayashio														R	N	N	N	N	D	D	D
Maryland														R	N	D	N	N	N	N	N
I-201														D	N	D	N	N	N	N	N
Kurahashi														D	N	N	N	D	D	D	N
Langley															R	D	N	N	D	D	N
Ranger															R	D	D	D	D	N	N
Ukuru															D	N	D	N	D	D	D
Natsugumo															D	N	N	N	D	N	N
Brooklyn															D	D	D	D	D	D	D
Massachusetts															D	D	D	D	N	N	D
Kumano Maru																R	D	N	N	D	D
Tuscaloosa																R&D	D	D	N	D	D
No.101 Transport Ship																R	D	D	D	D	N
Yuugure																D	D	N	D	D	D
Heywood L. Edwards																D	D	D	N	N	D
Noumi																D	N	N	D	D	N
Inagi																	R&D	N	D	D	D
Shirakumo																	R	D	N	D	D
Nevada																	R&D	N	D	N	D
Rodney																	R	N	D	N	D
Kaiboukan No.22																	D	N	N	D	N
Asahi																	D	D	N	N	N
Salmon																	D	D	N	N	N
C.Cappellini																	D	D	D	N	N
Javelin																	D	N	D	N	D
Drum																		R	N	N	D
I-41																		R	N	N	N
I-36																		D	N	D	N
Heian Maru																		D	D	D	N
Gloire																			R&D	N	D
Lexington																			R	D	N
Mogador																			D	N	D
Phoenix																			D	D	D
Wahoo																				R&D	D
Kirov																				R	D
Minneapolis‎																				R	D
Ootomari																				D	N
Kaya																				D	D
Sugi‎																				D	D
Shimane Maru																				D	D
Richard P. Leary																				^{[EDT 3]}	D
Norge																					R
Glorious (BC)																					R
Wasp																					R
Eidsvold																					D
Nankai																					D
Dace																					D
Kashi																					D
Thonburi																					^{[EDT 4]}
This table includes all ships that are currently not permanently available outside of events (Limited Time Drops are still counted as "event drops"). ↑ Samuel B. Roberts was introduced as a quest 5A05's reward during the Kancolle 5th Anniversary ↑ Fukae was introduced as limited drop in 2-4 & 6-3 during the Spring 2018 Mini-Event (Phase 1) ↑ Richard P. Leary was introduced as a limited drop in 2-3 & 2-4 after the Kancolle 12th Anniversary ↑ Thonburi was introduced as a limited drop in 2-3, 2-5, & 7-3 on the 2025/12/27

Spring 2025 Event

Contents

Historical Background

1st Stage Operations - "Hokkaido Defence Operation"

Involved Forces

2nd Stage Operations - "Operation Rei-Go Part 2"

Involved Forces

- "Operation Rei-Go Stage Play"

Information

Quick Info Table

Fleet Locking Table

Event-Wide Bonuses

New Mechanics

Tank TP

Seaplane Base

New Ships

Returning Ships

New Equipment

New Enemy Vessels

New Enemy Equipment

Friendly Fleets

Voice Lines

Mechanics

Participation requirements

Special Mechanics

Farming

LBAS Leveling

Resource Farming

See Also