To SeaQueen: DW uses no raytracer. It's much much simpler. Check my measurements
http://www.subsim.com/radioroom/showthread.php?t=117814
I have still found no effect simulated beyond what's in the thread.
In DW main advantage of Kilo in literal waters is that Kilo is smaller and turns better. Try 'Kilo Demo' mission with Seawolf.
