Talk:World 4/@comment-84.198.160.57-20150103082718/@comment-25784159-20150103092246

A rank+ allow you to get rare drop (ie red drop)

S rank give more chance to get them than A rank

and because you need 2 DDs for easy pathing, give them a sonar + depth charge (type 3 preferred) and engage in double line formation. they can kill easily kill that SS