User blog comment:DynamitMC/How to use "Player Ship Protection Mechanism" in our advantage/@comment-749631-20151102122506/@comment-1421453-20151102155039

It can surely save your life, but with a very low chance. Still, it is mathematically a little bit better to use such ships then 4n ones. Such as Abukuma K2 (45HP) - Kiso K2 (44HP)

But depending on the enemy, this might give you a very small disadvantage as well. Imagine those ships taking exactly 44 dmg. In this case, Kiso will survive with 83% chance, but Abukuma will be KO.

However the good thing about it is that your ship can avoid a chuuha(medium dmg), which can give you better shelling and being able to shoot a torpedo at the end. So i prefer and advise to use such ships (4n+1).