James H. Schmitz 
Winds of Time 

(Excerpt): "Gefty Rammer came along the narrow passages between the Silver Queen’s control compartment and the staterooms, trying to exchange the haggard look on his face for one of competent self-assurance. There was nothing to gain by letting his two passengers suspect that during the past few minutes their pilot, the owner of Rammer Spacelines, had been a bare step away from plain and fancy gibbering."