For about four seconds Doc neglected his patient. That was so; so he was.
"Yes, tell the captain."
The quartermaster ran up the bridge ladder. Doc gazed over the chart-rail down to the deck, up and around on the ship. "Doggone!" he breathed. "I am the ranking—I'm the only naval officer present." Then he shook his head and bent to his patient. He might have the rank, but the last thing he was going to do was to butt in on any regular ship's officers.
The disabled ship went on to her new course, south half east magnetic, with the destroyer steaming twenty-knot circles around her. And late in the afternoon they made the convoy. By night she was tucked in the rear of twenty other ships, the doctor and his emergency staff still aboard. They were to remain aboard until the steamer made port.
That same night something happened. On the steamer they did not know just what it was. They saw a column of white, a column of black—those who happened to be looking—another column of white, from the big ship of the fleet. And then dark came. There were radios flying about, but they were code messages and the radio man could not decode them because the first thing the steamer captain had done that morning when it looked as though the U-boat was going to make them take to the boats was to heave the code-books overboard. In the morning they would know.
Morning came, but with it not a ship in sight. Of twenty ships and a group of destroyers the night before, not one now. It was his signal-officer who thought it out first. "U-boats thick last night, sir, and the convoy must 'a' got orders to disperse or else change course," he said to the doctor.
"That sounds like good dope to me too." He turned to the steamer's captain. "Where were you bound, sir?"
"To Havre."
The doctor could see nothing else but to proceed to Havre, and on a zigzag course. The old captain did not know about the zigzagging; he had never done any zigzagging and did not know why he should now—besides, it mixed his reckoning all up.
The doctor said he would fix the zigzagging part of it, and, telling his hospital steward to have a special eye out for the very sick man, went into the chart house and proceeded to explain the zigzagging stuff. He paused to recall all he had ever learned while elbowing the 352's navigator over the chart-table; also the answers he had got to his questions while so doing.