Expeditions

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Expeditions button in your sortie screen

Expeditions are the backbone of naval economy. They provide a safe and steady income of virtually all common in-game resources with the exception of Improvement materials.

  • The fuel, ammo, steel and bauxite gained from expeditions can accumulate beyond the soft cap. This makes expeditions the best way to stockpile resources for events.
  • Expeditions also provide experience, making them useful for levelling up weak ships.
  • A few expeditions are sortie support expeditions, which provide additional support fire for difficult sorties and events.
  • Many expeditions are also quest requirements.

Expeditions themselves need to be unlocked first, usually by completing other expeditions or quests. Once they have been unlocked, they can be repeated indefinitely. The list of expeditions does not change from one update to another. However, support expeditions for special event maps might be temporarily included during events.

Unlocking Expeditions

Expeditions are unlocked by completing Quest A4.

 
An expedition page showing a new expedition, an incomplete expedition and several completed expeditions. The number 3 marker denotes the third fleet is on this expedition

Normally, completing an expedition will unlock the next one in numerical order. However, there are exceptions:

  • Expedition 5 unlocks Expedition 9.
  • Expedition 18 unlocks Expeditions 22, 25 and 33.
  • Expedition 20 unlocks Expedition 27.
  • Expeditions 1 through 8 unlock Expedition 32.
  • Expedition 26 unlocks Expeditions 34 and 35.

Additionally, some expeditions require clearing a certain map and completing multiple expeditions. They are:

  • Clearing 1-5, Expedition 9-20 and 27-29 unlocks Expedition 30 and 31 (for Quests D5, D6, D7 and D8).
  • Clearing 1-5, Expedition 9-18, 25, 35 and 36 unlocks Expeditions 37, 38, 39 (for Quests D9, 11, 13 and 14).
  • Clearing 1-5, Expedition 9-18 and 22 unlocks Expedition 23 (for Quests D10 and D12).

Sending a Fleet on an Expedition

For instructions on how to access Sortie screen , see Tutorial: How to Play.
 
Sending a fleet on expedition

To send fleets on expedition:

  1. Access the Sortie screen and click the rightmost, blue button.
  2. Select an expedition.
  3. Select a fleet to send on the expedition.
  4. Click the bottom right button to send the selected fleet on the expedition.

Once unlocked, an expedition can be repeated indefinitely without any penalty to subsequent runs. However, an expedition can only be attempted once at any given moment. Multiple fleets can go on different expeditions, but not the same expedition.

The first fleet (main fleet) cannot go on an expedition; only the second, third and fourth fleets.

  • Quest A4 unlocks the second fleet at the same time as expeditions
  • Quest A14 unlocks the third fleet
  • Quest A16 unlocks the fourth fleet.

Every expedition has its own success conditions. Failure to meet the conditions results in a failed expedition and the fleet will still consume fuel, ammunition and the time specified by the expedition but no resources or reward will be returned. HQ XP gained from failed expeditions is reduced significantly to 30%, however, Ship XP gained remains unaffected. While this might prove desirable for those who want to suppress their HQ level, it is generally not recommended due to the resource costs involved.

Check the top right corner of the home screen for the bubble indicating an expedition has returned, click on the home screen to view the results of the expedition and obtain any rewards.

  • Expedition quests only count when the expedition fleet returns, therefore, one only needs to activate the quest when the fleet returns.
  • Expeditions can be completed earlier by entering the main screen when there is less than one minute remaining in the expedition.
  • Ships lose 3 morale per expedition.

Damage state cannot cause an expedition to fail; however, heavily-damaged ships cannot be deployed as flagships.

Recalling an Expedition

 
Only seen in an active expedition

In the event where the wrong fleet was accidentally sent on expedition, an "Expedition Recall" is possible to cancel the expedition and save the time otherwise would be wasted on expedition.

An expedition cancelled in this manner yields no resources, rewards, or experience. It is also counted as a fail in the Admiral's profile. Fuel, ammunition and morale required by the expedition are still consumed. This should be used with care as a recall cannot be cancelled.

The recalled fleet does not return immediately as it will take a while to return to base. The calculation for return call time is as follows:

The smaller time between remaining time and elapsed time / 3.

For example, a fleet is sent on expedition #1 (15 minutes), then after 6 minutes, it is recalled.

  1. The remaining time is 9 minutes.
  2. The elapsed time is 6 minutes.
  3. The smaller number of the two, 6 minutes elapsed time in this case, is divided by 3.
  4. The final recall time is 2 minutes.

Note that Expedition Recall cannot be used if the expedition in question is a support expedition. The only way to recall such fleet early is to deploy to a map that corresponds with that support expedition.

Success Conditions

Normal Success

Meeting all the following conditions guarantees a Normal Success:

  • Fleet's supply
    • Fleets sent on expedition should be fully resupplied.
      • There are reports of success even when the fleet is not fully resupplied, but it is risky.
  • Flagship's level
    • The level of the flagship (first ship of a fleet) must be greater than or equal to the flagship's level specified by the expedition.
  • Total level of fleet
    • The total level of every ship in the fleet must be greater than or equal to the total level of fleet specified by the expedition, if any.
  • Ship types
    • Most expeditions require a certain number of ships of specific types. The ships in a fleet can be in any order but the required number of ships in each type must be met. Some ship types can be used as substitutes for other ship types, some remodelled ship types and their old models are not interchangeable, while other types follow a one-way relationship.
      • Light aircraft carriers (CVL) and seaplane tenders (AV) can be used as substitutes for standard aircraft carriers (CV).
      • Submarine aircraft carriers (SSV) can be used as substitutes for submarines (SS).
      • Aviation cruisers (CAV) and heavy cruisers (CA) are not interchangeable.
      • Torpedo cruisers (CLT) and light cruisers (CL) are not interchangeable.
      • Battleships (BB) and fast battleships (FBB) cannot be used as substitutes for aviation battleships (BBV).
      • Light aircraft carriers (CVL) and standard aircraft carriers (CV) cannot be used as substitutes for seaplane tenders (AV).
  • Number of ships in fleet
    • Fleets sent on an expedition must contain at least a certain number of ships. After ship type requirements are met, wild card ships (denoted as type XX in the expedition tables) can be added to meet the minimum number of ships condition. Extra ships beyond the minimum number to help with other conditions are allowed.
  • Number of drum canisters and drum carrying ships
    • Expedition 21, 37, 38 also require Drum Canisters to be equipped. The total number of drums and the number of ships carrying drums must be greater than or equal to a minimum value.
 Drum Canister

The Drum Canister is obtainable through quests F11, F12 and via development. Only destroyers, light cruisers, aviation cruisers, amphibious assault ships, and seaplane tenders can equip drums.

 

Great Success

For more information and tips on how to sparkle ships , see Morale/Fatigue.

Great success is an advanced form of success. It grants 50% additional resources, twice the Admiral experience, four times the ship experience and great success item reward if applicable. Great success can be achieved when:

  • Normal Success conditions are met.
  • There are a few great success factor(s):
    • Fleets containing ships with 50 morale or higher (i.e. sparkling).
    • Expedition requiring Drum Canisters, as well as expeditions #24 and #40 (if drums are equipped).

The chance of achieving great success increases approximately 16% per sparkled ship. Furthermore, expeditions that require Drum Canisters have a chance to produce great success independently of morale. These two factors can be stacked so as to achieve Great Success with less sparkling.

Please note that success rate increased per sparkled ship for drum canister expeditions is less than expeditions without drum canisters. Exceedingly high number of drums (drum overload) affect the great success chance of these expeditions.

Damage state is speculated to reduce your chances of great success.

Ratings and Rewards

Expeditions will always yield the primary resources upon success and they will always grant experience unless recalled. However, secondary item rewards are not guaranteed to be obtained upon success.

 
Expedition 12 gives medium box (left) and development material (right)
  • For expeditions that give only one type of item, there is 50% chance of getting the item.
  • For expeditions that give two types of items, the item listed on the left of the game screen will have 50% chance. The item on the right will always be rewarded upon Great Success, and has a low reward chance with Normal Success.

The outcome of expeditions depends on several conditions. There exists four possible outcome ratings; each of which has different resource, experience and item reward yield ratios.

Rating Resources Experiences Rewards
HQ XP Ship XP
(Flagship gets 1.5x the shown multiplier)
Left Right
Recall None None None None None
Failure x0.3 x1
Normal Success x1 x1 x1 or x2 (50% chance for each;
determined randomly per ship)
50%
Great Success x1.5 x2 x2 or x4 (50% chance for each;
determined randomly per ship)
50% 50% for only 1 (if reward shown is x2)
Otherwise guaranteed
 Daihatsu-class Landing Craft

The Daihatsu-class Landing Craft (LC) is obtainable from Akitsu Maru as stock equipment. Each equipped LC will net an additional 5% gain in resources from expeditions, up to 20%.

Total resource gain is multiplied with great success bonus. Combined with great success bonus, the net resource gain is calculated as 50%+7.5% per LC. Thus the max resource bonus is an additional 80% with great success and 4 LC.

Akitsu Maru can be constructed in Large Ship Construction

 

Support Expeditions

Support expeditions involve sending a fleet into an expedition to provide additional bombardment during the opening stages of Combat. There are two types of support expedition; normal support and boss support:

  • Expedition 33 is a normal support expedition (15 minutes). It gives support at every node other than a boss node with ~50% chance to trigger at each node.
  • Expedition 34 is a boss support expedition (30 minutes). It gives support at a boss node with ~80% chance to trigger.

Events usually come with their own exclusive support expeditions (e.g. Expedition 133 & 134) that can only be used throughout the event. These event expeditions are unlocked by default.

Sparkling your ships (mainly flagship) increases the probability to trigger support while using fatigued ships reduces it. Currently, support expeditions only work in World 5 and events. Furthermore, support does not work on nodes that begin in a night battle. Support expeditions will end if either of these two conditions are fulfilled:

  1. Finish a sortie.
  2. The timer runs out.

It is recommended to start a sortie immediately after the support expedition has been sent in order to avoid the timer running out halfway through the sortie.

Support Types

A support expedition requires a minimum of 2 DDs (Destroyers). The other 4 slots affect what type of support will be provided. The three types provided are Aerial Support, Long Range Torpedo Attack, and Support Shelling:

Type Info Requirement Costs Pros Cons

Aerial Support

Sends a number of planes to carry out bombardment
  • Behaves like a normal aerial battle
    • May require fighter planes due to AS affecting performance
3 or more total ships from the following classes: CV, CVL, LHA, and AV 50% Fuel, 40% Ammo
Bauxite (only if support arrives and planes shot down)
  • Many smaller damage attacks spread out, possibly allowing multiple scratch damage on high HP enemies (which can be significant)
  • Low cost (less ammo used and no bauxite used if support does not arrive)
  • Engagement or Formation Modifier do not apply.
  • For certain maps where night battle precedes day battle, supporting fire may concentrate more (since it arrives after night battle).
  • Unlikely to sink any ship.
  • Affected by enemy's AA and AS.
  • The DDs cannot affect the battle as they cannot participate in aerial combat
Long Range Torpedo Attack Long range torpedo attack with high miss chance and low damage 4 or more total ships from the following classes: CL, CLT, DD (counting the 2 DDs you must include) 50% Fuel, 80% Ammo
  • No particular advantage
  • High cost, low damage.
  • Possibly implemented to prevent a low cost torpedo squadron doing support shelling.
Support Shelling Medium to long distance shelling attack with concentrated power
  • CVLs have great performance despite cost.
    • But only up to 2; 3 or more turns the support into Aerial Support.
  • 2DDs + 2CVLs run at about 50 fuel and 100 ammo but the CVLs can hit day attack power cap easily, making this very effective.
Any other fleet not meeting either of the two requirements above. 50% Fuel, 80% Ammo
  • High damage if hit.
  • Likely to sink enemy's ship.
  • High cost (especially if boss node is not reached)
  • Affected by Engagement and Formation Modifier (so Crossing the T - Disadvantage is a huge detriment)

Damage calculation

All damage dealt by support expedition follows the rule for regular combat, with two exceptions:

  1. Aerial support does not get the +25 to the Base Attack Power. Thus, each attack uses the following formula for damage: [math]\displaystyle{ \text {Modifier} \times \text {(Bomber's Dive Bomb or Torpedo stat)} \times \sqrt {Number \space of \space Planes} }[/math], where Modifier = 1.0 for dive bombers and either 0.8 or 1.5 (50% chance of either) for torpedo bombers.
  2. Shelling support does not get the Effective Bonus provided by improving equipment and uses (Firepower + 5) as attack power instead.

Reference Tables

Legends

About Total Yield
HQ Admiral exp gain from expedition
Ship Ship exp gain from expedition
     Base resources gain from expedition (at 100% ratio).

For hourly rate, there are colored markers denoting above average and outstanding rate.

Rewards The item on the right side is always given upon great success. The one on the left has 50% chance to be rewarded. The quantities in the table denote only the maximum, it's possible to get fewer.
About Requirements
Σ(Lv) Minimum total level of fleet
  Minimum level of flagship
Minimum Fleet Size Required number of ships per type. XX denotes the minimum number of wild cards (any ship) necessary in addition to the specified ship types to reach minimum number of ships in fleet. For expeditions requiring less than 6 ships, extras may be added (e.g. to hit fleet level requirements). See Glossary for more ship type abbreviations.
  Minimum number of drums (Hovers over the asterisk *)
   Ammo and fuel consumption per ship given in supply bars. Each ship has 10 bars when fully resupplied. The value for each bar varies from one ship class to another.

World 1

File:World1icon.png
鎮守府海域
# Name Time HQ Ship         Rewards
1 練習航海 00:15 10 10 30
2 長距離練習航海 00:30 20 15 100 30  x1
3 警備任務 00:20 30 30 30 30 40
4 対潜警戒任務 00:50 30 40 60  x1  x1
5 海上護衛任務 01:30 40 40 200 200 20 20
6 防空射撃演習 00:40 30 50 80  x1
7 観艦式予行 01:00 60 120 50 30  x1
8 観艦式 03:00 120 140 50 100 50 50  x2  x1

World 1

File:World1icon.png
鎮守府海域
# Name Time HQ Ship         Rewards
1 練習航海 00:15 40 40 120
2 長距離練習航海 00:30 40 30 200 60  x1
3 警備任務 00:20 90 90 90 90 120
4 対潜警戒任務 00:50 36 48 72  x1  x1
5 海上護衛任務 01:30 26 26 133 133 13 13
6 防空射撃演習 00:40 45 75 120  x1
7 観艦式予行 01:00 60 120 50 30  x1
8 観艦式 03:00 40 46 16 33 16 16  x2  x1

File:World1icon.png
鎮守府海域
# Name Time Σ(Lv)   Minimum Fleet Size      
1 練習航海 00:15 Lv 1 2XX -3
2 長距離練習航海 00:30 Lv 2 4XX -5
3 警備任務 00:20 Lv 3 3XX -3 -2
4 対潜警戒任務 00:50 Lv 3 1CL 2DD -5
5 海上護衛任務 01:30 Lv 3 1CL 2DD 1XX -5
6 防空射撃演習 00:40 Lv 4 4XX -3 -2
7 観艦式予行 01:00 Lv 5 6XX -5
8 観艦式 03:00 Lv 6 6XX -5 -2

World 2

File:World2icon.png
南西諸島海域
# Name Time HQ Ship         Rewards
9 タンカー護衛任務 04:00 60 60 350  x1  x2
10 強行偵察任務 01:30 40 50 50 30  x1  x1
11 ボーキサイト輸送任務 05:00 40 40 250  x1  x1
12 資源輸送任務 08:00 60 50 50 250 200 50  x1  x1
13 鼠輸送作戦 04:00 70 60 240 300  x2  x1
14 包囲陸戦隊撤収作戦 06:00 90 100 240 200  x1  x1
15 囮機動部隊支援作戦 12:00 100 160 300 400  x1  x1
16 艦隊決戦援護作戦 15:00 120 200 500 500 200 200  x2  x2

File:World2icon.png
南西諸島海域
# Name Time HQ Ship         Rewards
9 タンカー護衛任務 04:00 15 15 87  x1  x2
10 強行偵察任務 01:30 26 33 33 19  x1  x1
11 ボーキサイト輸送任務 05:00 8 8 50  x1  x1
12 資源輸送任務 08:00 7 6 6 31 25 6  x1  x1
13 鼠輸送作戦 04:00 17 15 60 75  x2  x1
14 包囲陸戦隊撤収作戦 06:00 15 16 40 33  x1  x1
15 囮機動部隊支援作戦 12:00 8 13 25 33  x1  x1
16 艦隊決戦援護作戦 15:00 8 13 33 33 13 13  x2  x2

File:World2icon.png
南西諸島海域
# Name Time Σ(Lv)   Minimum Fleet Size      
9 タンカー護衛任務 04:00 Lv 3 1CL 2DD 1XX -5
10 強行偵察任務 01:30 Lv 3 2CL 1XX -3
11 ボーキサイト輸送任務 05:00 Lv 6 2DD 2XX -5
12 資源輸送任務 08:00 Lv 4 2DD 2XX -5
13 鼠輸送作戦 04:00 Lv 5 1CL 4DD 1XX -5 -4
14 包囲陸戦隊撤収作戦 06:00 Lv 6 1CL 3DD 2XX -5
15 囮機動部隊支援作戦 12:00 Lv 8 2CV* 2DD 2XX -5 -4
16 艦隊決戦援護作戦 15:00 Lv 10 1CL 2DD 3XX -5 -4
CV*: CVL and AV can be substituted for CV.

World 3

File:World3icon.png
北方海域
# Name Time HQ Ship         Rewards
17 敵地偵察作戦 00:45 30 40 70 70 50
18 航空機輸送作戦 05:00 60 60 300 100  x1
19 北号作戦 06:00 60 70 400 50 30  x1  x1
20 潜水艦哨戒任務 02:00 40 50 150  x1  x1
21 北方鼠輸送作戦 02:20 45 55 320 270  x1
22 艦隊演習 03:00 45 400 10
23 航空戦艦運用演習 04:00 70 420 20 100
24 北方航路海上護衛 08:20 65 ? 500 150  x2  x1

File:World3icon.png
北方海域
# Name Time HQ Ship         Rewards
17 敵地偵察作戦 00:45 40 53 93 93 67
18 航空機輸送作戦 05:00 12 12 60 20  x1
19 北号作戦 06:00 10 11 67 8 5  x1  x1
20 潜水艦哨戒任務 02:00 20 25 75  x1  x1
21 北方鼠輸送作戦 02:20 19 23 137 116  x1
22 艦隊演習 03:00 15 133 3
23 航空戦艦運用演習 04:00 17 105 5 25
24 北方航路海上護衛 08:20 7 ? 60 18  x2  x1

File:World3icon.png
北方海域
# Name Time Σ(Lv)   Minimum Fleet Size      
17 敵地偵察作戦 00:45 Lv 20 1CL 3DD 2XX -3 -4
18 航空機輸送作戦 05:00 Lv 15 3CV* 2DD 1XX -5 -2
19 北号作戦 06:00 Lv 20 2BBV 2DD 2XX -5 -4
20 潜水艦哨戒任務 02:00 Lv 1 1SS 1CL -5 -4
21 北方鼠輸送作戦 02:20 30 Lv 15 1CL 4DD 3(3*) -8 -7
22 艦隊演習 03:00 45 Lv 30 1CA 1CL 2DD 2XX -8 -7
23 航空戦艦運用演習 04:00 200 Lv 50 2BBV 2DD 2XX -8 -8
24 北方航路海上護衛 08:20 200 Lv 50 CL* 4DD 1XX None* -8 -6

3* : Minimum of Drum carrying ships
CV*: CVL and AV can be substituted for CV.
CL*: CL must be flagship.

None*: Affects great success rate.

World 4

File:World4icon.png
西方海域
# Name Time HQ Ship         Rewards
25 通商破壊作戦 40:00 80 180 900 500
26 敵母港空襲作戦 80:00 150 200 900  x3
27 潜水艦通商破壊作戦 20:00 80 60 800  x1  x2
28 西方海域封鎖作戦 25:00 100 140 900 350  x2  x2
29 潜水艦派遣演習 24:00 100 100 100  x1  x1
30 潜水艦派遣作戦 48:00 100 150 100  x3
31 海外艦との接触 02:00 50 50 30  x1
32 遠洋練習航海 24:00 300 Var* 50 50 50 50  x1  x3
Var*: Varies due to several factors, including (but no limited to) Katori's level and individual ship's level

File:World4icon.png
西方海域
# Name Time HQ Ship         Rewards
25 通商破壊作戦 40:00 2 4 23 13
26 敵母港空襲作戦 80:00 1.87 2.5 11.25  x3
27 潜水艦通商破壊作戦 20:00 4 3 40  x1  x2
28 西方海域封鎖作戦 25:00 4 5 36 14  x2  x2
29 潜水艦派遣演習 24:00 4 4 4  x1  x1
30 潜水艦派遣作戦 48:00 2 3 2  x3
31 海外艦との接触 02:00 25 25 15  x1
32 遠洋練習航海 24:00 12.5 ?? 2 2 2 2  x1  x3

File:World4icon.png
西方海域
# Name Time Σ(Lv)   Minimum Fleet Size      
25 通商破壊作戦 40:00 Lv 25 2CA 2DD -5 -8
26 敵母港空襲作戦 80:00 Lv 30 1CV* 1CL 2DD -8 -8
27 潜水艦通商破壊作戦 20:00 Lv 1 2SS -8 -8
28 西方海域封鎖作戦 25:00 Lv 30 3SS -8 -8
29 潜水艦派遣演習 24:00 Lv 50 3SS -9 -4
30 潜水艦派遣作戦 48:00 Lv 55 4SS -9 -7
31 海外艦との接触 02:00 200 Lv 60 4SS -5
32 遠洋練習航海 24:00 Lv 5 CT* 2DD 3XX -9 -3

CV*: CVL and AV can be substituted for CV.

CT*: Katori (CT) must be the flagship

World 5

File:World5icon.png
南方海域
# Name Time HQ Ship         Rewards
33 前衛支援任務 00:15 Sortie support expedition (normal)
34 艦隊決戦支援任務 00:30 Sortie support expedition (boss)
35 MO作戦 07:00 100 100 240 280  x2  x1
36 水上機基地建設 09:00 100 100 480 200 200  x2  x1
37 東京急行 02:45 50 65 380 270  x2
38 東京急行(弐) 02:55 100 70 420 200  x1
39 遠洋潜水艦作戦 30:00 130 320 300  x2  x1
40 水上機前線輸送 06:50 60 140 300 300 100  x3  x1

File:World5icon.png
南方海域
# Name Time HQ Ship         Rewards
33 前衛支援任務 00:15 Sortie support expedition (normal)
34 艦隊決戦支援任務 00:30 Sortie support expedition (boss)
35 MO作戦 07:00 14 14 34 40  x2  x1
36 水上機基地建設 09:00 11 11 53 22 22  x2  x1
37 東京急行 02:45 18 23 138 98  x2
38 東京急行(弐) 02:55 34 24 144 69  x1
39 遠洋潜水艦作戦 30:00 4 11 10  x2  x1
40 水上機前線輸送 06:50 8 ? 44 44 14  x3  x1

File:World5icon.png
南方海域
# Name Time Σ(Lv)   Minimum Fleet Size      
33 前衛支援任務 00:15 Sortie support expedition (normal)
34 艦隊決戦支援任務 00:30 Sortie support expedition (boss)
35 MO作戦 07:00 Lv 40 2CV* 1CA 1DD 2XX -8 -8
36 水上機基地建設 09:00 Lv 30 2AV 1CL 1DD 2XX -8 -8
37 東京急行 02:45 200 Lv 50 1CL 5DD 4(4*) -8 -8
38 東京急行(弐) 02:55 240 Lv 65 5DD 1XX 8(4*) -8 -8
39 遠洋潜水艦作戦 30:00 180 Lv 3 1AS 4SS -9 -9
40 水上機前線輸送 06:50 150 Lv25 CL*, 2AV, 2DD, 1XX None* -8 -7

4* : Minimum of Drum carrying ships.
CV*: CVL and AV can be substituted for CV.
CL*: CL must be flagship.

None*: Drums affect Great Success Rate.

  • Light carriers [CVL] and Seaplane tenders [AV] can be used as substitutes for Fleet carriers [CV]
  • Aviation submarines [SSV] can be used as substitutes for Submarines [SS]
  • Aviation cruisers [CAV] and Heavy cruisers [CA] are not interchangeable.
  • Torpedo cruisers [CLT] and Light cruisers [CL] are not interchangeable
  • Battleships [BB] and Fast battleships [FBB] cannot be used as substitutes for Aviation battleships [BBV]
  • Light carriers [CVL] and Fleet carriers [CV] cannot be used as substitutes for Seaplane tenders [AV]

Related links