Marley's Chain by Alan E. Nourse, Science Fiction, Adventure

Finally, the Spaceport was empty, and the huge liner from the outer Asteroid Rings was being lifted and rolled by the giant hooks and cranes back into its berth for drydock and repair, her curved, meteor-dented hull gleaming dully in the harsh arc lights. Tam watched the creaking cranes, and shivered in the cold night air, feeling hunger and dread gnawing at his stomach. All he knew was the rumors he had heard, the whispered tales, the frightened eyes and the scarred backs and faces. He had just laughed and told himself that the stories weren't true. And now they all welled back into his mind, tightening his throat and making him tremble -- "Hey, Sharkie. Come here."