Next question: Looking through the shiplist, I am once again confused by the term BCH when applied to the roms. What, exactly, is the rom BCH? Other than the KHK, which is literally supposed to replace a destroyed DN, or a KCN, which in SFB is a conjectural design since the klinks could never spare a C7 for any reason. The Firehawk-A is listed as a BCH. Two S torps and two F torps, plus 4 ph-3 and 5 ph-1 don't normally add up to a BCH. I went and checked advanced missions (my rom stuff is limited to this and basic) and it's listed as a CA. However, it also lists the KHK as a CA.
I get the feeling that there are errors here, but I don't have the reference material to correct.