"An officer aboard," he whispered. "I was down looking for grub, and saw him. He's been asleep."

"Take the wheel," said Jenkins, calmly. "Keep her as she goes, and leave that black buoy to starboard." Then he stepped out on deck.

CHAPTER III

Seamen, officers as well as men, accustomed to "watch and watch," of four hours' alternate duty and sleep, usually waken at eight bells, even when sure of an all night's sleep. It was long after midnight when Denman had gone to sleep on the pantry floor, and the slight noise of getting under way did not arouse him; but when eight bells came around again, he sat up, confused, not conscious that he had been called, but dimly realizing that the boat was at sea, and that he was culpable in not being on deck.

The crew had come, no doubt, and he had over-slept. He did not immediately realize that it was still dark, and that if the crew had come the steward would have found him.

He dressed hurriedly in his room, and went on deck, spying a fleeing man in brown mounting the steps ahead of him, and looked around. Astern was a fog bank, and ahead the open sea, toward which the boat was charging at full speed. As he looked, a man came aft and faced him. Denman expected that he would step aside while he passed, but he did not; instead he blocked his way.

"Are you an officer of this boat, sir?" asked the man, respectfully.

"I am. What do you want?"

"Only to tell you, sir, that she is not now under the control of the Navy Department. My name is Jenkins, and with twelve others I escaped from the prison to-night, and took charge of this boat for a while. We did not know you were on board."

Denman started back and felt for his pocket pistol, but it was in his room. However, Jenkins had noticed the movement, and immediately sprang upon him, bearing him against the nearest ventilator, and pinioning his arms to his side.