Board Thread:Fleet's Prepared-ness/@comment-2A02:C7F:9608:CE00:9CFB:B39C:BB51:5C29-20170730121653/@comment-30750174-20171002145910

Subs are kinda of the rare drop (though no really that rare) of 1-5, so don't expect too much from it. I think you may have a better chance of getting a sub (like Hachi) if you do a construction, but no harm in doing more 1-5 with the saury event and the possibility of getting some DEs