I failed to dodge an incoming bomb (shot down the plane) and got hit. 2 of my 4 diesels were knocked out (value of 1 on the damage screen). The other 2 were OK - so why couldn't I move? All other propulsion systems were fine. I would have thought that having 2 out of 4 diesels would have left me with some manoeuvering ability, maybe at reduced speed, but no go.