BRS-132 vs ships (bug?)

[cacha]

One thing that always bothered me it that BRS-132 rockets seem to do no damage against ships. It does not matter how many times I hit a transport ship with them, it never shows any damage. RS-132s, on the other hand, can kill a transport ship in a few hits.
In earlier versions, like 4.06, BRS rockets were more effective against ships than RSs. They are even part of the standard loadout for one the single missions that come with the game (IL2 N7), where you attack a convoy of several warships.
So, is this a bug, or BRS-132 really shouldn't be effective against ships?