Well, since this old, dusty thread was somehow brought to life again, I decided, having once more read through the various comments to do some adjustments on the latest version posted. Thus, erik_t, I followed your advice and lowered the nav radar so it will interfere as little as possible with the Type909 radar. Also, I designed an entirely new stabilisator system, with three variable stabilisators interspersed among an extended, but broken up (sectionalized) bilge keel. Hopefully this would take care of the stability issues the design suffered.
p.s. Since it's such a long time since I posted the last updated version, I'm posting this one separately for comparison's sake. d. s.