Board Thread:Fleet's Prepared-ness/@comment-32826611-20180213015205/@comment-30501447-20180214055047

I don't rely much on TCI but better be safe, and there's not many options for CA TCI if you don't luck mod (like me) (Aoba Kai is too weak, Prinz is an event ship).

@Cyhne torpedo cut-in is an attack triggered by luck stat, at night, and is the most powerful type of night cut-in (there are other type such as gun cut-in and mixed weapon cut-in). It got its name by its animation. To trigger it, equips your DD/CA/SS/CL(T) with 2 - 3 torpedoes (no main gun/secondary gun equipped). Fill the rest of the slots with auxilary equipments (night scout plane, radar, machine gun, kohyoteki, searchlight, star shell, sonar... ; if your ship has below 50 luck (all but Yukikaze) you can equip her with the skilled lookout (an equipment that add +20 to luck) (for starting, only do TCI with ships >30 luck)

In easy mode, normally double attack at night is enough, but for high amored enemies, cut-in are sometimes needed (there are times you even need several cut-in ships to break through)

For more accurate information, read the wiki: http://kancolle.wikia.com/wiki/Combat#/Night_Battle