Admiral, the bombards that replace the TH are front fire only.
Str6 is the forward arc's armament, no supporting WB. Otherwise its SC as usual.
Edit: The reason I had it at str4 was for a str7 in the front, which, assuming the opponent is smart and is abeam in his facing, would actually net you more than 2 measly shots for giving up your launch bay. str5 and str6 have exactly the same results, come to look at it, which makes me wonder what the point of it is. I guess for combined fire and halfing strengths.
Still against str4 replacement of TH bay if its only front firing?