Talk:Winter 2017 Event/@comment-27881917-20170112154625/@comment-3502824-20170113185009

They were both reward ships yes.

In Littorio's case she returned in World 4-5 as temporary limited-time drop during 2015 Christmas, and came back in Spring 2016.

In U-511's case, after Spring 2016 Event, she never came back.

So when you have the chance to get a ship, go for it cause there is no guarantee the said ship will return right next event.