we should really remove the word "real" from pretty much everything, it should be replaced by ****. you'd never see a "real" shockwave because it travels at the speed of light, and light is necessary for seeing thigns, so the wave would hit you at the same time the energy would hit you (there wouldnt be any sort of concussion because space is vacuum and theres nothing to compress and expand)
throw real out the window
judge things by how cool they look
for coolness, DaB, i dont like how explosions of ships generate 2 perpendicular sets of shockwaves, i dont think it looks cool, stick with one set, maybe make it bigger, or slower moving, that would look cool