Spring 2014 Event

The Spring 2014 event started on April 23th and will last until May 6th (TBC).

Official Twitter
Information from the official Twitter:
 * 1) Event Name "Recon planes, launching!"
 * 2) *High LOS will be the key to increase the chances of reaching the boss nodes.
 * 3) *To achieve a high value, use of seaplanes, recon aircraft and ships with high LOS is strongly recommended
 * 4) Event lasts 2 weeks from April 23rd.
 * 5) *Boss health in this event does not regenerate so stay calm and don't rush. Take it easy .
 * 6) Requires at least 75% sortie win ratio to participate.
 * 7) *At least 5 free ship slots for new girls to join your fleet before sortie.
 * 8) *At least 20 free equipment slots before sortie.
 * 9) 4 new ships added: DD Amatsukaze, DD Tanikaze, repair ship Akashi, and CL Sakawa.
 * 10) *Amatsukaze is an E-3 Reward (Port Darwin Area).
 * 11) *Tanikaze can be obtained from drops (E2, E3, E4 boss nodes are confirmed to drop her).
 * 12) *Akashi is an E-2 Reward (Battle of Sunda Strait), she can repair ships mid sortie (down to moderate damage). A new item, Ship Repair Facility, allows her to repair 2 ships at the same time. The times where she is allowed to repair are limited, however, she will get more functionality in the future.
 * 13) *Sakawa is an E-5 reward.
 * 14) Tone, Chikuma and Bismarck received a second remodel, with Tone-class being reclassified as CAVs. This can be unlocked by using a special Blueprint item, obtainable by trading Extra Operation and Event maps badges.
 * 15) New BGM added.
 * 16) New Recon Plane functionality:
 * 17) *Increased effectiveness in the aerial combat phase from successful scouting with carrier-based scouts and seaplane scouts
 * 18) **Effect depends on whether air superiority or air supremacy is obtained
 * 19) *Special bonus in shelling phase from seaplane scouts
 * 20) *Achieving Air Superiority / Air Supremacy allows ships with Recon Planes to do Double Attacks and Cut-Ins during Day Battle
 * 21) Reward for clearing event maps:
 * 22) *E-1: Medal, Reppuu Kai, Contruction Fairy, Damecon.
 * 23) *E-2: Medal, Akashi.
 * 24) *E-3: Medal x2, Amatsukaze.
 * 25) *E-4: Medal x2, 新型高温高圧缶.
 * 26) *E-5: Medal x3, Sakawa.

E-1 - Southwest of Surabaya Sea - Battle of Surabaya Sea

 * 100 exp
 * Node B contains 1 flagship and 1 elite Ka-class submarines
 * Rewards Furniture Fairy, Emergency Repair, Reppu Kai, and a Medal upon clear
 * Killing the boss 6 times will empty its HP gauge. Not being able to kill it by the end of boss battle will still do some damage to the gauge.
 * Boss is CA Ri-Class flagship Kai
 * Use expedition 117 if you think you need more damage during sortie and boss node.

Branching rules
 * CLT-CLT-CAV-BB-CV-CV seems to be the best fleet composition so far, with reported LoS of 298 to 408.
 * Some compositions have been reported to reach boss node with LoS of 226

Tips

Drops
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===E-2 - Southwest of Sunda Strait - Across The Sunda Strait===
 * Rewards a Medal and Construction Ship Akashi upon clear
 * 150 exp
 * Map gauge has 6 hp
 * Preboss node is night battle
 * Boss is BB Ru-Class Flagship Kai
 * Expedition 117 can be use for extra damage during sortie

Branching rules

 * 2 BB, 1 CLT, 1 CAV, 2 CV with BB and CAV equiped with Type 0 is really likely to reach boss node

Drops
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E-3 - Port Darwin Area - Assault! Destroy Port Darwin Operation

 * Rewards Amatsukaze and two Medals upon clear
 * 200 exp
 * Killing the boss 7 times will empty its HP gauge. Not being able to kill it by the end of boss battle will still do some damage to the gauge.
 * Node-A contains 2 Ka-class Submarines
 * Boss is Harbour Princess

Branching rules

 * Using 4 BB + 2 CV with 352+ LOS seems to give a 100% chance to reach the Boss node

Tips

 * Using Sanshiki gives you a damage bonus against the Boss.
 * Use expedition 118 if you think you need more damage in the boss node.

Drops
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E-4 - Central Pacific Sea - Sweep Against Subs in the Frontline

 * Rewards 新型高温高圧缶, Repair Goddess, 艦艇修理施設 and one Medal upon clear

Branching rules

 * From C to D : Fleet with 5 DD or 4DD + 1CL . The sixth ship can be any battleship or carrier. Fleet with less than 4 DD or have two BB/CV will always send to E
 * E to D or G is random.

Tips

 * Use diamond formation for pre-boss node, line-abreast for the rest.
 * Pre-boss node is very tough if you have no carrier and let the enemy get air superiority, your DD will get crit to red very frequently.

Drops
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E-5 - North Pacific Sea - Capture Peacock Island Operation

 * Rewards Sakawa and three Medals upon clear.

Branching rules

 * Starting point to A : Fleet with submarine(s).
 * B → C : Fleet with fast ship only.
 * B → D : Fleet with slow ship(s).
 * From F or G to J (boss node) : With a certain LOS (400+?), otherwise, send you to dead end (H or I)

Drops
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