The other's eyebrows twitched suddenly. "They're speeding up!" he shouted, and then: "That torpoon ready, there? Good." His voice lowered again as Ken pulled his belt a notch tighter and snatched a last glimpse of the fish before leaving. "I want you to try for three, son," he said soberly: "but—be careful. Don't take fool chances, and keep alert. Remember Beddoes."
Ken nodded and walked to the torpoon catapult, hearing Streight's familiar send-off echoed by the men of the crew who were nearby:
"Good hunting!"
The idea of an underwater craft for the pursuit of killer whales—tremendously valuable since the discovery of valuable medicinal qualities in their oil—had been scoffed at by the majority of the Alaska Whaling Company's officials at the time of its suggestion, but the Narwhal after her first two months of service had decisively proved her worth. She was not restricted to the open seas, now swept almost clean of the highly prized killers; she could follow them to their last refuge, right beneath the floe-edges of the Arctic Circle; and as a result she could bring back more oil than any four surface whalers.
With a cruising radius of twenty-five hundred miles, she stayed out from the base until her torpoons had accounted for anywhere from sixty to eighty killers. One by one these sea-animals would be taken to the surface and there cut up and boiled down, until her tanks were full of the precious blubber oil. Ever farther she pressed in her quest for the fish schools, dipping for leagues into a silent sea that for ages had been known only to the whale and the seal and their kindred; a sea always dark and mysterious beneath its sheath of ice.
The inner catapult door closed behind Kenneth Torrance, and he slid into his torpoon. Twelve feet long, and resembling in miniature a dirigible, was this weapon that made practical an underwater whaling craft. The tapered stern bore long directional rudders, which curved round the squat high-speed propeller: its smooth flanks of burnished steel were marked only by the lines of the entrance port, which the torpooner now drew tight and locked. Twin eyes of light-beam projectors were set in the bow, which was cut also by a vision-plate of fused quartz and the nitro-shell gun's tube, successor to the gun-cast harpoon.
Ken lay full-length in the padded body compartment, his feet resting on the controlling bars of the directional planes, hands on the torpoon's engine levers. A harness was buckled all around him, to keep him in place. His gray eyes, level and sober, peered through the vision-plate at the outer catapult door.
Suddenly a spot of red light glowed in it; the door quivered, swung out. A black tide swirled into the chamber. There came the hiss of released air-pressure, and the slim undersea steed rocketed out into the exterior gloom, her light-beams flashing on and propeller settling into a blur of speed as she was flung.