Talk:Type 0 Observation Seaplane/@comment-25938809-20180501052143/@comment-24930367-20180501130828

It's because the bonus from improvement is square rooted.

1.25 x sqrt(improvementlevel). Obviously it's gonna get lower and lower the more you improve compared to first improvement.

Apart from what Akashi Arsenal's page says, I'm not sure what improvement does. I mean, if it does something else someone is bound to put it here some way or another...