Talk:Combat/@comment-26316660-20151014092102/@comment-26154973-20151019085741

Evasion stat (together with morale and battle formation) determines evasion rate for friendly ships, roughly: evasion rate = evasion stat / (40 + evasion stat), evasion stat is doubled when ship is sparkled. This is similar to how enemy evasion works: friendly accuracy rate is determined by friendly ship accuracy power (depends on ship level, accuracy stat including equipment bonuses and improvements, morale, luck and equipment fit) and enemy evasion power that is enemy evasion stat / (40 + enemy evasion stat) when enemy evasion stat > 40 or enemy evasion stat / 40 otherwise (maybe 37.5 instead of 40, this enemy evasion power is distracted linearly, same way as enemy armor is distracted from friendly attack power).

If you go with this theory, lv150 Shimakaze with normal morale will have 75% evasion rate, or 80% with 3 boilers, lv150 Yuudachi: 74% or 79%, lv20 Shimakaze: 58% or 70%, lv20 Yuudachi: 53% or 68%.

As a source: http://jbbs.shitaraba.net/bbs/read_archive.cgi/netgame/12394/1387515725/ (428 and 434)