Talk:Recent Updates/@comment-24880599-20140606082808/@comment-24900018-20140606153210

>its somehow not an instant return

From the Kancolle Twitter account:

※艦隊は(出発後の航海に応じて)早く母港に帰投します. ※遠征資源は消費します.

It says that it all depends on which map's expedition you went on; say map 1 recalls could be shorter and map 2 recalls could be longer. Also, it says that the expedition's resources will be consumed on recall.