“Shut up, Jack!” said Moy with a solemn growl, “wot a tremendous jaw you’ve got w’en you let loose! Why, wot are ’ee starin’ at now? ’Ave ’ee seed a ghost?”

“No, Dick,” said Shales, in a tone of voice from which every vestige of jocularity had disappeared; “look steady in the direction of the South sandhead light and—see! ain’t that the flash of a gun?”

“It looks like it. A wreck on the sand, I fear,” muttered Dick Moy, putting up both hands to guard his eyes from the snow-flakes that were driven wildly about by the wind, which had by that time increased to a furious gale.

For a few minutes the two men stood gazing intently towards the south-west horizon. Presently a faint flash was seen, so faint that they could not be certain it was that of a signal-gun. In a few minutes, however, a thin thread of red light was seen to curve upwards into the black sky.

“No mistake now,” cried Jack, leaping towards the cabin skylight, which he threw up, and bending down, shouted—“South sandhead light is firing, sir, and sending up rockets!”

The mate, who was at the moment in the land of dreams, sprang out of them and out of his bunk, and stood on the cabin floor almost before the sentence was finished. His son, who had just drawn the blanket over his shoulders, and given vent to the first sigh of contentment with which a man usually lays his head on his pillow for the night, also jumped up, drew on coat, nether garments, and shoes, as if his life depended on his speed, and dashed on deck. There was unusual need for clothing that night, for it had become bitterly cold, a coat of ice having formed even on the salt-water spray which had blown into the boats. They found Dick Moy and Jack Shales already actively engaged—the one loading the lee gun, the other adjusting a rocket to its stick. A few hurried questions from the mate elicited all that it was needful to know. The flash of the gun from the South sandhead lightship, about six miles off, had been distinctly seen a third time, and a third rocket went up just as Welton and his son gained the deck, indicating that a vessel had struck upon the fatal Goodwin Sands. The report of the gun could not be heard, owing to the gale carrying the sound to leeward, but the bright line of the rocket was distinctly visible. At the same moment the flaring light of a burning tar-barrel was observed. It was the signal of the vessel in distress just on the southern tail of the sands.

By this time the gun was charged and the rocket in position.

“Look alive, Jack, fetch the poker!” cried the mate as he primed the gun.

Jack Shales dived down the companion-hatch, and in another moment returned with a red-hot poker, which the mate had thrust into the cabin fire at the first alarm. He applied it in quick succession to the gun and rocket. A blinding flash and deafening crash were followed by the whiz of the rocket as it sprang with a magnificent curve far away into the surrounding darkness.

This was their answer to the South sandhead light, which, having fired three guns and sent up three rockets to attract the attention of the Gull, then ceased firing. It was also their first note of warning to the look-out on the pier of Ramsgate harbour. Of the three light-ships that guarded the sands, the Gull lay nearest to Ramsgate; hence, whichever of the other two happened to send up signals, the Gull had to reply and thenceforward to continue repeating them until the attention of the Ramsgate look-out should be gained, and a reply given.