User blog comment:Kuras/Fall Event 2016/@comment-118.70.128.222-20161130022721/@comment-29735334-20161130024051

Is that for E-5? To be able to reach the boss, your planes need to have 11 range.

While Type 1 Mod 22A (range 10) can reach the boss with PBY boost (+1 range), Type 1 (range 9) cannot. Solution - If you have Type 2 Large Flying Boat, use it. It boosts range by 2. Otherwise, you may have to only sortie LBAS planes that can reach the boss...