Changes

===Tips===

===Tips===

* 2CA/CAV to guarantee sortie start→A, and H→I (boss) route

* 2 DD and 2 or less (F)BB(V) + CV(B/L) to guarantee B start.

* 2DD for C→H.

* 1 CL and 2 DD to guarantee boss node.

* As such, 2CA2DD2XX guarantees boss routing

** 3 XX 1 CL 2 DD with a maximum of 2 (F)BB(V) will take the shortest BCFJ route.

* 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

*** 1 BB can be replaced for a CVL for this.

** 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.

* Node E is a submarine node without warning.

* 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.

** The maelstrom will result in increased fuel costs compared to 4-3.

;'''Monthly Quest: "Surface Strike Fleet" to the South! (Bm4) Advice:'''

;'''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

* 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

** Those other two ships should be 2 DD to guarantee boss routing.

*** You can also use 2 ships of any other class though all branches will be random without 2 DD.

*** 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.

***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.