How does the speed of the void ships in warhammer work ? Why is it that when ships come out of the warp they need days to slow down ? For example if I remember this correctly, in the Call of the Lion (I think) the Space Marine Battlebarge the silent spear , comes out of the warp and the captain of the ship states that it would take the ship 7 days (I think) to slow down and some hours for it's instruments to start working properly. Why? Take the chaos cruisers speed what does it mean?