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→Dupe Cap List
=Overview=
=Overview=
When scoring a victory on certain combat nodes, depending on the situation, a ship might be dropped and added to the ship list.
When scoring a victory on certain combat nodes, a ship might drop and be added to the ship list.
* Ship drops are always level 1 and on base remodel and modernization.
* Ship drops are always level 1 and on base remodel with no modernization.
* Having either ship slots or equipment slots full will prevent any drop (similar to ship construction).
* Having insufficient spare ship slots or equipment slots will prevent any drop (similar to ship construction).
* The drop tables of each map are listed here on the wiki, as well as on each map page and ship page, please refer to those tables for each situation.
* The drop tables of each map are listed here on the wiki, as well as on each map page and ship page, please refer to those tables for each situation.
**Those tables are an approximation, as they fuse all formations drop tables. For the exact formation drop tables, please use [https://tsunkit.net/nav KcNav] drop tables.
For a given node drop pool, each droppable ship will have a given base drop rate which is then affected by the factors detailed below:
For a given node drop pool, each droppable ship will have a given base drop rate which is then affected by the factors detailed below:
;Combat Rank
;Combat Rank
* "Victories" (S, A, and B ranks) are the only way to drop a ship.
* Ships only drop on S, A, and B ranks.
* Scoring a greater victory will usually yield more and better drops.
* Scoring a greater victory will usually yield more and better drops.
;Nodes
;Nodes
** Some nodes will have a higher chance of dropping nothing,
** Some nodes will have a higher chance of dropping nothing,
** Some nodes do not drop ship in any situation (mostly minor event nodes),
** Some nodes do not drop ship in any situation (mostly minor event nodes),
* Boss nodes always dropping ships (only applicable to the final boss on most multi-boss maps),
* Boss nodes always drop ships (only applicable to the final boss on most multi-boss maps, and if the above-mentioned conditions are met),
**In the rare cases devs misimplement limited drops, it is possible to drop nothing even if all right conditions are met (notably if a drop cap is present with no proper replacement drop [https://discord.com/channels/749742270252843008/781602079319916546/1362111532300767404]).
;Enemy Formation
;Enemy Formation
* Some "easier" formations may not drop the rarer ship
* Drop tables are not determined by the node only, but each enemy formation that can be encountered on the node.
**Some nodes have the same drop tables for all formations
* Usually, "easier" formations may not drop some rarer ships, and some ship may be locked to few or even a single formation.
;Specific Mechanic
;Specific Mechanic
* In the case of [[Drop List#Limited Time Drops|limited time drops]] on normal maps, they usually overlap or replace existing drop rates.
* In the case of [[Drop List#Limited Time Drops|limited time drops]] on normal maps, they usually overlap or replace existing drop rates.
* Some individual drop rates might also be affected by [[#Drop Caps]], proportionally increasing the rest of the drop rates of the list.
* Some individual drop rates might also be affected by [[#Drop Caps]], proportionally increasing the rest of the drop rates of the list.
* Some ships are affected by [[scrap]]ping, notably all DE and some limited ones (''see [[#Scrap Locking|below]]'').
* The difficulty ([[event]] only) changing the enemy formations, with better drops being limited to higher difficulties' formations.
* The difficulty ([[event]] only) changing the enemy formations, with better drops being limited to higher difficulties' formations.
**Casual & Easy: limited "rare drops" available,
**Casual & Easy: limited "rare drops" available,
*"Perfect S Victory", being exactly the same as a regular S rank.
*"Perfect S Victory", being exactly the same as a regular S rank.
*Items drops (e.g. [[Saury]]), where it is possible to drop both a ship and an item when applicable, the two being independent.
*Items drops (e.g. [[Saury]]), where it is possible to drop both a ship and an item when applicable, the two being independent.
*Some "mercy mechanic", improving the odds of dropping something after a given amount of attempts.
*Some "mercy/pity mechanic", improving the odds of dropping something after a given amount of attempts.
*Any direct effect of HQ level is currently unproven. However HQ level has an indirect effect as it affects enemy formation.
*Any direct effect of HQ level is currently unproven. However HQ level has an indirect effect as it affects enemy formation.
=Drop Caps=
=Drop Caps=
The "drop cap" (only applicable for few ships), is when some "rarer/more valuable" ships are limited in how many copies can be owned at once ("dupe cap") or on how many can be dropped in a certain period of time ("overfishing cap"). This way, the majority of ships can be dropped an infinite amount of time (certain players have 200+ copies of a ship), but certain ships will have an arbitrary limit:
The "drop cap" (only applicable for few ships), is when some "rarer/valuable" ships are limited in how many copies can be obtained. It is believed to be mostly node-based, but some reports suggest it can be also world-wide, or even game-wide. It can take the form of a "'''[[#Dupe Cap|Dupe Cap]]'''" or an "'''[[#Overfishing Cap|Overfishing Cap]]'''".
*This way, the majority of ships can be dropped an infinite amount of times (certain players have 200+ copies of a ship), but certain ships will have an arbitrary limit.
*For the '''"dupe caps"''', some ships will be limited on how many can be owned at once, with their drop rate falling to zero on all locations when this cap is reached.
*Ships affected by a cap are notably replaced with "alternative drop slots" instead (''see [[#Drop Theory|below]]'').
===Drop Caps List===
==Dupe Cap==
Ships who are known to be limited in how many dupes can be obtained, as of the {{GameUpdates|2024/10/18}} update.
The "'''Dupe Cap'''" is for how many duplicates of a ship can be '''possessed at once'''.
*This can also come in a diminishing drop rate as the amount of duplicates increases, with their drop rate falling to zero when this cap is reached, and being reseted back if the duplicates are "removed" (scrapped, fodder uses, sunk...), unless it is also affected by some "[[#Scrap Locking|Scrap Locking]]".
*Famously, for [[Akashi]] on [[2-5]]'s boss node, she will drop '''only''' if currently not possessed, meaning that duplicates cannot be dropped here (dupes are still possible on any other location).
*Usually, the amount of a given ship being possessed will affect the drop rate, the more ships the worse the rate, down to 0 %,
*''See [[#Dupe Cap List|below]] for a list of the known ships with such a cap.
===Dupe Cap List===
Ships who are known to be limited in how many dupes can be obtained, as of the {{GameUpdates|2025/06/27}} update.
*Do note that this list may be erroneous or not up to date.
*Do note that this list may be erroneous or not up to date.
*Some ships were known to be limited to zero dupes when they were introduced, but so far, all ships but Valiant can be duped at least once.
*Some ships were known to be limited to zero dupes when they were introduced, but so far, all ships except Valiant can be duped at least once.
*Some ships may also have a diminishing drop rate, but no clear drop cap.
*Some ships may also have a diminishing drop rate, but no clear drop cap.
''Are listed below only ships who have never been recorded as more than a 5th dupe.
''Are listed below only ships who have never been recorded as more than a 5th dupe.
!Ship
!Ship
!Cap
!Cap
|-
|-
|[[Mogador]]
|[[Thonburi]]|| 2
| 2||
|-
|-
|[[Gloire]]
|[[Minneapolis]]|| 2
| 2||
|-
|-
|[[I-36]]
|[[Drum]]|| 2
| 2||
|-
|-
|[[Rodney]]
|[[Wahoo]]|| 2
|-
|-
|[[Jean Bart]]
|[[Lexington]]|| 2
|-
|-
|[[Natsugumo]]
|[[Kaya]]|| 2
|-
|-
|[[Heian Maru]]
|[[Sugi]]|| 2
|-
|-
|[[Hayashio]]
|[[Shimane Maru]]|| 2
|-
|-
|[[No.101 Transport Ship]]
|[[Ootomari]]|| 3
| 3||
|-
|-
|[[Nisshin]]
|[[Richard P. Leary]]|| 3
| 3||
|-
|-
|[[Sheffield]]
|[[Gloire]]|| 3
| 3||
|-
|-
|[[Asahi]]
|[[Rodney]]|| 3v
|-
|-
|[[Tuscaloosa]]
|[[Natsugumo]]|| 3
| 3||
|-
|-
|[[Heywood L. Edwards]]
|[[Heian Maru]]|| 3
| 3||
|-
|-
|[[Phoenix]]
|[[No.101 Transport Ship]]|| 3
| 3||
|-
|-
|[[Brooklyn]]
|[[Nisshin]]|| 3
|-
|-
|[[Honolulu]]
|[[Phoenix]]|| 4
| 4||
|-
|-
|[[Atlanta]]
|[[Heywood L. Edwards]]|| 4
| 4||
|-
|-
|[[Javelin]]
|[[Asahi]]|| 4
| 4||
|-
|-
|[[Maestrale]]
|[[Hayashio]]|| 4
| 4||
|-
|-
|[[I-47]]
|[[Honolulu]]|| 4
| 4||
|-
|-
|[[Akishimo]]
|[[Atlanta]]|| 4
| 4||
|-
|-
|[[Suzunami]]
|[[Javelin]]|| 4
| 4||
|-
|-
|[[Yuugure]]
|[[Maestrale]]|| 4
| 4||
|-
|-
|[[Tamanami]]
|[[I-47]]|| 4
| 4||
|-
|-
|[[Makinami]]
|[[Akishimo]]|| 4
| 4||
|-
|-
|[[Fuyutsuki]]
|[[Suzunami]]|| 4
| 4||
|-
|-
|[[Nelson]]
|[[Tamanami]]|| 4
|-
|-
|[[Prinz Eugen]]
|[[Makinami]]|| 4
|-
|-
|[[Fujinami]]
|[[Fuyutsuki]]|| 4
|-
|-
|[[Usugumo]]
|[[Kumano Maru]]|| 4
|-
|-
|[[Grecale]]
|[[Yuugure]]|| 5
| 5||
|-
|-
|[[Jingei]]
|[[Nelson]]|| 5
| 5||
|-
|-
|[[Kaiboukan No.30]]
|[[Prinz Eugen]]|| 5
| 5||
|-
|-
|[[Noumi]]
|[[Noumi]]|| 5
| 5||
|-
|-
|[[Sagiri]]
|[[Hayanami]]|| 5
| 5||
|-
|-
|[[Hayanami]]
|[[Kishinami]]|| 5
| 5||
|-
|-
|[[Kishinami]]
|[[Tuscaloosa]]|| 5
| 5||
| 5||
|}
|}
==Overfishing Cap==
The "'''Overfishing Cap'''" is for how many duplicates of a ship can be '''dropped in a certain limit quantity and in a certain period of time'''.
*''So far only observed for some rarer ships and all [[Kaiboukan]]s [https://twitter.com/Sashimi91640578/status/1852977074488897829][https://twitter.com/Sashimi91640578/status/1852977245671076129][https://twitter.com/Sashimi91640578/status/1852977384565460998].
*This cap can be further exacerbated by "Scrapping" said ships.
===Scrap Locking===
It is currently believed that there is a system ("scrap locking") preventing players from obtaining a disproportionately high amount of some "rarer/valuable" ships.
*This system seems to target ships that specifically grant desirable equipment such as [[Prinz Eugen]], {{Class|Fletcher}}, [[USN]] battleships, and ships that have other desirable uses such as [[DE]] with [[Modernization#Special Modernizations|special modfodding]].
*This is assumed to be a way to nerf workarounds of the above-mentioned dupe limitations, notably scrapping ships as soon as their desirable equipment obtained, in order to keep a lower "dupe count" and so a better drop rate.
This system's inner workings are not fully understood, however, there is substantial evidence of its existence through statistical feasibility: [https://x.com/zekamashinet/status/1713210060938379475].
*"Scrapping" here refers to any way of "decommissioning" a ship, aka '''"[[Scrap|dismantling]]", "[[Modernization|modfodding]]", or "sinking"'''.
Currently, it is believed the system works in three different possible ways:
*Scrapping a ship will trigger a flag for a specific node, which prevents said node from dropping the ship (i.e. multiple users reported that scrapping Johnston made it impossible for them to obtain Johnston from the 2-3 limited boss drop specifically, whereas she would drop normally from other nodes). This flag is supposedly cleared after an arbitrary time has passed, allowing the ship to be obtained again.
*Scrapping a ship would not decrease the "dupe count" of a specific node, meaning that scrapping ships to enjoy a higher drop rate would not be possible (i.e. Iowa drops during the Winter 2018 Event, where no more than a total of 2 Iowas would be obtainable from the last boss node, whether still having them or not).
*A combination of the above-mentioned systems with some dupe. [[DE]] drops are notably suspected to behave similarly (''see [[#DE Drop Cap|below]]'')
===DE Drop Cap===
[[DE]] seem to be affected by a mix of "dupe limitation", "scrap locking", and an "hard drop limit".
;Possession Penalty
*When owning '''3 copies''' of a DE and farming for her 4th copy onwards, her drop rate will decrease. So try to '''keep 2 copies''' of each DE at most.
;Cumulative Penalty
*For every time that DE is '''scrapped, sunk, or used as fodder''', the game will add '''+1''' to the player's "cumulative decommission" counter for that DE. If this counter '''reaches 10 or higher''', that DE's drop rate will also be decreased.
**This counter is '''invisible and will keep going up for each DE''', making it really hard to get more copies of each given DE after a certain amount of copies have been removed, unless there is a '''"hard reset of drop pool"'''.
***So far, only one "hard reset of drop pool" has been observed, with the {{GameUpdates|2023/11/02}} update [https://x.com/shiroos/status/1738122210588647929]. When this reset happens, every player's '''cumulative penalties''' are reseted back to 0, allowing to farm for all DE with their normal rate. However, it is unknown when/if the devs will reset the drop pool again.
**The cumulative penalty effects depend on the map, some being more or less affected.
***For map [[1-3]], it kicks in when the counter is '''10 or higher''' [https://x.com/shiroos/status/1728817901686452653], for [[Early Spring 2024 Event]] E2 Boss, the effect kicked in when the counter was '''14 or higher''' [https://x.com/shiroos/status/1772304298669457604].
**There is no fixed amount for this counter as it may change, so the safest bet is still to try to keep the counter at '''9 or less''' to avoid the penalty.
**When cumulative penalty kicks in, it '''does not reduce that DE drop rate to 0%''', but might get close to it.
Both '''penalties''' applies to the player in '''every maps, including events''' (as seen in map [[2-3]] [https://x.com/shiroos/status/1772303252454854707] and [[Early Spring 2024 Event]] E2 Boss [https://x.com/Sashimi91640578/status/1807745269595025450]), so it is possible to exhaust a DE's drop rate, with no possibility to get anywherelse easier.
''For full details of how it works, please check out these articles: [https://note.com/shiroos/n/nc69eeb09585f], [https://note.com/shiroos/n/nf94178915b6c].
=Drop Theory=
=Drop Theory=
*[[Drop List]]
*[[Drop List]]
*[[Sortie]]
*[[Sortie]]
*[[Help:Ship Farming]] (For guide of farming specific limited drops)
{{Mechanics}}
{{Mechanics}}