"Make it nor'west by west half west," Eric said a little tremulously to the helmsman, as they came in sight of Sankaty Head on Nantucket Island.

"Nor'west by west half west, sir," the helmsman repeated, porting his helm a trifle.

After the ship had proceeded a certain distance, the lieutenant called another of the first-class men on the bridge and he took his turn. At the end of the trip the officer summoned the class.

"Mr. Swift," he queried, "why did you not take the Muskeget Channel?"

Eric colored.

"I hadn't remembered exactly, sir," he explained, "the depths of the channels near the Cross Rip Shoals. I think I had them right, sir, but I wasn't sure enough of myself to feel that I ought to risk the ship."

"You will remember them, hereafter?"

"Yes, sir."

"Mr. Van Sluyd," continued the lieutenant, turning to another member of Eric's class.

"Yes, sir."