Board Thread:Game Updates/@comment-3502824-20171207155334/@comment-5380363-20171231061107

Since 1-5 commonly drops 4 submarines already (I-8, I-19, I-58 and I-168), you'll just have to pray that U-511, I-26 or the twins drop in the next event.

Well, there's I-401 in World 6 and LSC, but that's a fair bit of investment...