HMS Rubberduck

I've had a few instances where enemy ships at 1% seem to be nearly immortal, shrugging off repeated impacts for several minutes, and a case today where two ships were happily fighting on at 0% structural health. Both on the "Modern Battleship" mission. Also it would be nice to be able to assign guns to a secondary role, i.e. such as auto-targetting nearest enemy, or torpedo carrying boats. At present its almost pointless investing in the weight of secondary guns in a BB.