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===Tips===
* 2CA/CAV to guarantee sortie start→A, and H→I (boss) route
* 2DD for C→H.
* As such, 2CA2DD2XX guarantees boss routing
* Node D is an all sub node, Node A has 2/3 chance of having one sub, and Boss Node I 1/3 chance of having one sub
** Equipping at least one ship for a [[Combat#Anti-Sub_Warfare|preemptive anti-sub attack]] may assist with clearing the latter nodes by eliminating the lone sub, leaving all ships to focus on the surface ships during shelling phase.
* It's possible to level DDs here instead of at [[World_4|4-3]]. A fleet of 6DD arrives arrive at the sub node 75% of the time.
** This is also risky, as the other 25% runs into heavy enemy fleets..
** The maelstrom will result in increased fuel costs compared to 4-3.
;'''Monthly Quest: "Surface Strike Fleet" to the South! (Bm4) Advice:'''
* This quest requires three slow battleships (or BBVs), exactly one light cruiser, and two other ships, with an S-Rank at the boss node
** For branching reasons, those two other ships should either be CAs or CAVs
** Enemy carriers can easily take AS against a fleet without seaplane bombers, leaving your fleet open to enemy artillery spotting.
*** Carrying seaplane bombers means that BBVs and CAVs are forced to attack submarines, which may make it difficult to achieve the necessary S-rank at the boss node.
*** Using a seaplane fighter ''and'' a recon plane on BBVs and CAVs allows them to artillery spot while contributing air power to take AS
***3 BBVs and 2 CAVs equipped with seaplane fighters and/or bombers allows for AS to be taken easily, at the risk of being forced to attack the Ka-class flagship at the boss node.
**Double line formation is an ideal formation, allowing for both ASW and surface combat
***ASW performance in Double Line is not as strong as that of Line Abreast, so a dedicated-ASW setup is highly recommended. A [[Combat#Anti-Sub_Warfare|preemptive anti-sub attack]] setup can add additional benefit. A high-level [[Abukuma]] Kai Ni can achieve this while retaining her preemptive torpedo strike capability, although torpedo strength & accuracy would be reduced due to the use of Double Line formation.