When this message had been sent, Jack sat in for an answer. Before long, out of the maze of other calls, he picked his summons and crackled out his reply, adding O.K. G.—“Go ahead.” When he had finished taking the message, merely a formal acknowledgment of the captain’s farewell despatch, Jack grounded his instruments and went forward with the reply in search of the skipper.

He found the Ajax wallowing through a somewhat heavy sea. Looking down from the narrow bridge, he could see the decks with their covered winches, steam-pipes and man-holes only at times through a smother of green water and white foam that swept over them.

Jack clawed his way forward and found the captain with his first officer on the bridge. The wheel was in the hands of a rugged, grizzled quartermaster, who stood like a figure of stone, his eyes glued to the swinging compass card. Occasionally, however, he gave an almost imperceptible move to the spokes of the brass-inlaid wheel he grasped, and a mighty rumbling of machinery followed. For the Ajax, like practically every vessel of to-day, steered by steam-power, and a twist of the wrist was sufficient to move the mighty rudder that was distant almost a tenth of a mile from the wheel-house.

But the boy did not give much observation to all this. He was intent on his duty. Touching his cap, he held out the neatly written message,—of which he had kept a carbon copy on his file.

“Despatch, sir!” he said respectfully.

The captain took the message and read it, and then eyed the boy attentively.

Captain Braceworth was a big figure of a man, bronzed, bearded and Viking-like. He was also known as a strict disciplinarian. Jack had not spoken to him till that moment. He decided that he liked the skipper’s looks, in spite of an air of cold authority that dwelt in his steady eyes.

“So you’re our wireless man, eh?” asked the skipper.

“Yes, sir. Mr. Jukes——”

“Humph! I know all about that. I understand this is your first voyage. Well, you have lots to learn. Do your duty and you’ll have no trouble with me. If not, you will find it very uncomfortable.”