Moving a ship with less engines

My example:<br /><br />HS 6 Freighter with only a single B Ion Engine.  Could it move? Could it jump?<br /><br />IMO, move = yes, at somewhere near 1/3 ADF. Jump? No. I don't think the reaction mass could apply enough thrust to offset the weight and push the ship to 1%C.<br /><br />Thoughts?