Talk:Winter 2017 Event/@comment-217.246.12.196-20170216233807

Above is mentioned:

Sortieing two (or more) fast speed submarines will take the route CDEF, which will result in a net gain of ammo if the transport phase is already done. However, the exp rate is lower than the above method. What is missing, is that going all the way CDEF is also a good way to sparkle your subs, as you usually win 3 battles, two with S-rank, one B rank.
 * On Hard, the Nu-class flagships that sometimes appear on D can deal minor damage to submarines. However, reaching taiha on maximum armor submarines is uncommon.
 * The remaining two battles are air raid nodes, which are automatic S ranks.