Talk:World 1/@comment-99.16.101.30-20140824080235/@comment-24930367-20140824100331

The third node (either C or D) drops I-58 and I-168 at low HQ level, according to an information buried here somewhere.

So you could purposely bring 6 ASW-capable ships and steamroll to the node in the middle of the map, and hope that the Subs indeed dropped from that node.

Not only your HQ level will proceed slower (but still a bit fast), you can level multiple ships too.