 Which is the best description of the relationship between the Doc and the captain?
Food, on the other hand, is a challenge shipmen face three times a day, so central to their thoughts that a history of sea-faring can be read from a commissary list. Should any groundsman dispute the importance of belly-furniture in history—whether it be exterminating whales, or introducing syphilis to the Fiji Islanders, or settling the Australian littoral with cross-coves from Middlesex and Hampshire—he is referred to the hundred-and-first chapter of Moby Dick , a book spooled in the amusement tanks of all but the smallest spacers. I trust, however, that no Marsman will undertake to review this inventory of refreshment more than a week from groundfall. The Triton made her underwater periplus of Earth with a galley stocked with frozen pizza and concentrated apple-juice. The Ship's Cook, the man who accomplishes the daily miracle of turning offal into eatables, is in many ways the most vital man aboard a spacer. Four officers and twenty-one Other Ranks were rescued from the Ajax in deep space, half dead from deuterium poisoning. Ship's Surgeon was myself, Paul Vilanova. Cooking aboard a spacer is a job combining the more frustrating tensions of biochemistry, applied mycology, high-speed farming, dietetics and sewage engineering. It's the Cook's responsibility to see that each man aboard gets each day no less than five pounds of water, two pounds of oxygen, and one-and-a-half pounds of dry food. This isn't just a paragraph from the Spacer Union Contract. Twelve tons of water, oxygen, and food would have filled the cargo compartments to bursting, and left a small ship like the C. P. Sale no reason to reach for Mars. By allowing a colony of Chlorella algae to work over our used air, water and other effluvia, though, three tons of metabolites would see us through from Brady Station to Piano West and back. Though I'm signed aboard as Ship's Surgeon, I seldom lift a knife in space. My duties are to serve as wailing-wall, morale officer, guardian of the medicinal whiskey and frustrator of mutual murder. Generally the man aboard who'd serve as the most popular murder-victim is the Cook. This trip, the-man-you-love-to-hate was our Captain. And it was Captain Willy Winkelmann who never referred to the ship's head by any other name than The Kitchen Cabinet.
 The Doc respects the captain's position but say something if he thinks he goes too far
 They are old friends and the Doc is happy to let poor behavior slide  The Doc respects the captain's position but say something if he thinks he goes too far  The Doc never puts up with the captain, which makes their relationship very tense  The Doc is the official mediator between the captian and the rest of the crew