The Submarine Hunters

Seeing that their work was completed, the pirates ceased fire, the guns' crews standing with folded arms and stolidly watching the tramp as she struggled in her death-throes.

Presently a vast cloud of steam issued from her engine-room. The inrush of water had damped her furnaces. The engineer and firemen, their faces black with coal-dust and streaming with moisture, hurried on deck.

For another quarter of a mile the doomed vessel carried way, then came to a sudden stop. As she did so she gave a quick list to starboard, until only a few inches of bulwark amidships showed above the waves.

Then, and only then, did the skipper give orders for the boats to be lowered. In an orderly manner the crew manned the falls, and the task of abandoning the ship began.

Without undue haste, the crew dropped into the waiting boats, each man with a bundle containing his scanty personal effects wrapped up in a handkerchief. The Captain was the last to leave. He did so reluctantly, his left hand tightly grasping the ship's papers.

Having rowed a safe distance from the foundering vessel, the men rested on their oars, and waited in silence for the end. It was not long in coming.

The tramp was heeling more and more, and slightly down by the bows. Suddenly she almost righted; then, amid a smother of foam as the compressed air burst open her hatches, she flung her stern high in the air.

Even then she seemed in no hurry. The after part from the mainmast remained in view, the now motionless propeller being well clear of the water.

For quite a minute she remained thus, then with a quick yet almost gentle movement slid under the waves. The last seen of her was the weather-worn red ensign still fluttering from the truck.

The periscope's bowl showed nothing but an expanse of sea and sky, and the two boats rising buoyantly to the waves.

A grim chuckle brought Ross and Vernon back to their surroundings. Herr Rix was rubbing his hands and grunting with evident satisfaction.

"Goot!" he ejaculated. "Now, how you like dat? Now you see how we German make blockade, hein?"

"A brave deed," replied Ross scornfully, and, gripping Vernon by the arm, led him back to their uncomfortable quarters in the alley-way.

CHAPTER VII

On the Bed of the Sea

For the next twenty-four hours nothing exciting occurred. The U-boat kept to the surface as much as possible, running under her petrol motors at fifteen knots. To exceed that pace would mean too great a consumption of fuel, and already the vessel was short of petrol.

Kapitan Schwalbe was prone to act on the side of extreme caution. Having sunk one vessel, he would not tackle another in the same vicinity. He invariably put at least a hundred miles between him and the scene of his latest ignominious exploit before attempting another act of kultur.

Three times during that twenty-four hours he dived: twice on sighting what were unquestionably Bristol Channel pilot-boats, and on the third occasion when a Penzance lugger under motor-power (for it was a dead calm) crossed his track.

All this time a regular stream of shipping was passing up and down the Bristol Channel, as unconcernedly as in the piping days of peace. To anyone but a bumptious German, the sight would have told its own tale; for the British Mercantile Marine, used to danger and difficulties, was not to be deterred by the "frightfulness" of von Tirpitz's blockade. On the contrary, the possibility of falling in with a hostile submarine gave an unwonted spice to the everyday routine of the toilers of the sea.

After breakfast on the following morning Ross and Vernon were told to go on deck. The sea was still calm, and the submarine, now running awash at full speed, was cleaving the water with practically dry decks.

The lads soon realized what was in progress. A couple of miles away was a large ocean cargo-boat, outward bound, and U75 was in pursuit.

Trefusis and his chum were not allowed for'ard, where the quick-firer was already in position for opening fire. They were ordered abaft the conning-tower, the hatch of which was open.

Kapitan Schwalbe's head and shoulders could be seen projecting above the opening. On the raised grating surrounding the conning-tower, stood a boyish-looking Unter-leutnant. Hermann Rix was nowhere to be seen. Apparently his duties compelled him to remain below.

Presently the quick-firer barked, and a projectile struck the water about a hundred yards from the starboard side of the pursued vessel. With the discharge of the gun, a sailor hoisted the black cross ensign of Germany from a small flagstaff aft, while a signal in the International Code ordering the British vessel to heave to instantly fluttered from the light mast immediately abaft the conning-tower.

The only response from the chase was the hoisting of the red ensign, for previously she had shown no colours. Slowly, defiantly, the bunting was hauled close up, and ironically "dipped" three times.