The mist closed in in swirling clouds that came along the calm water in lines a few hundred yards apart. One moment through the periscope the captain of the L-boat could see across the yellow-green sea a band of fog crossing his bows-the next, he could see nothing but the ripples that spread and vanished astern a few feet from the top prism of the instrument. It had been a poor visibility day since dawn, and now it looked like being thick weather till dark. He called to the first lieutenant and gave an order.
The hydroplane wheels whirred and the boat tilted up and climbed to the accompaniment of sighs and roars, as a couple of external tanks were partly blown. The captain looked down as he climbed the conning-tower ladder: "Slow ahead, port motor-put a charge on starboard-stop blowing." He threw back the lid and met the clammy touch of wet fog on his face. The boat was moving slowly east through a calm sea with only her conning-tower and guns above water, while a white line of foam running forward traced where her deck superstructure ran a few inches below the surface. If she had been on patrol anywhere but to the west of the Vyl Lightship the captain would have taken her to seventy feet and kept a hydrophone watch, but that billet is one that marks the end of a German swept channel, and he wanted to watch from above for the first sign of the fog clearing. He sat on the conning-tower lip, his sea-booted legs resting on the third ladder-rung, and his head twisting this way and that as he stared at the white wall of mist that was so close to him. He had sat there barely a minute, and the booming roar of the big charging engine had just begun sounding up the conning-tower when he slid forward and stood on the ladder with his head and shoulders only exposed; he leaned out to starboard trying to catch again the faint note of a syren that he had felt rather than heard through the note of his own engine. Then something showed dark through the fog, a grey blur with a line of foam below, and the L-boat's lid clanged down, and through her hull rang the startling, insistent blare of the electric alarm. The engine stopped, the port motor woke to full speed, and the control-room was alive with sound and rapid movement. She inclined down by the bow as the captain's boots appeared down the ladder, and as he jumped to the deck his hasty glance at the gauge showed her to be already at twelve feet. But twelve feet by gauge means a conning-tower top still exposed, and as the tanks filled and the internal noises died down a sound could be heard to starboard-a noise of high-speed engines that swelled till it seemed that every second would bring the crash and roar of water each man could imagine so clearly. The gauge-needle checked at fifteen, then swung rapidly up to thirty; the faces watching it relaxed slightly-for the noise swelling through the boat told of destroyers, and destroyers are shallow-draught vessels. The boat still raced on down, with the gauge jerking round through 60-70-80.... "Hold her up, now-back to seventy, coxswain"; the angle changed swiftly to "bow-up" as the spinning wheels reversed and the boat checked at eighty-five; a pump began to stamp and hammer as it drove out the water from a midship tank, and as the trim settled, the big main motors were steadily eased back to "dead slow." The first lieutenant looked up from the gauge and spoke over his shoulder to the captain. "I made it twelve seconds to twenty feet, sir; what was it that passed?"
"You're a cheery optimist with your twelve seconds. Your watch is stopped, Number One. It's destroyers, and they didn't give us much room either."
"Then d'you mean a fleet?"
"I mean I'm coming up to look in a quarter of an hour. I believe if it wasn't foggy I'd see them on the horizon now; that was a screening force that put us down. Here comes another."
Again the sound of a turbine-driven vessel came from the starboard hand. It swelled to its maximum and then suddenly died to a murmur, passing away to port. Twice more the warning came, and then fell a silence of just five minutes by the captain's wrist-watch. "Bring her up-twenty-four feet-and don't break surface now." He turned round to the periscope as the boat climbed and tested the raising gear, making the big shining tube move a few feet up and down. As the gauge moved to the 30 mark, the periscope rose with a rush, and he bowed his head to the eye-piece in readiness for an early glimpse of the surface world. At twenty-five feet a grunt of satisfaction and a quick swing round of the periscope spoke of his relief at being able to see at all; the fog was clearing and he was diving across one of the long lanes made in the mist by the rising wind. He turned the boat through eight points to keep her in the lane, turning up-wind to meet the clearer visibility that was coming. As he steadied on the new course he stiffened in his crouching attitude, staring to port: "Action Stations-evolution now-get a move on."
The clatter and excitement of flooding tubes and opening doors lasted hardly sixty seconds, but it was punctuated by several sentences from the periscope position such as: "Are you going to get those tubes ready?" and less plaintively, "How much something longer now?" The captain's thoughts were out in the mist above him where his range of view was bounded on two sides by faintly seen grey masses that rushed past him at close range. The reports of, "Ready, bow tubes"; "beam tubes ready, sir," came through the voice-pipes as the first lieutenant hurried from forward, panting from his exertions. "All ready, sir," he said, and paused for breath. "What is it, sir; can you see?..." The captain interrupted: "Yes," he said, "blinkin' mist and battle-cruisers. Port beam, stand by; port beam, fire! Starboard twenty-five; stop port, full speed starboard; look out forrard, Number One, I'm going to let go the lot."
The first lieutenant vanished through the control-room door as the familiar sound of a destroyer passing at short range began again to fill the boat. At the periscope the captain swore silently and continuously at the mist, the enemy, and the L-boat. He was between the destroyer screen and the big ships; the whole High Sea Fleet seemed to be coming by, and he had the very vaguest idea of their formation or even of their course. His first torpedo had missed, and it was more than likely the track of it would be seen. The L-boat spun round under the drive of the screw and the helm she carried, and as two destroyers of the screen converged on her periscope in high fountains of spray, she fired her bow salvo of torpedoes at the nearest of the big dim ships that crossed her bows. The range was short and the salvo ragged, for one torpedo "hung in the tube" a few seconds before leaving, its engines roaring and driving the water from the tube over the men abaft it in a drenching shower. That torpedo hit the ship astern of and beyond the target-the first bow torpedo to leave exploding right aft on the target herself. The converging destroyers swerved outwards slightly to avoid mutual collision, and the two "Wasserbomben" they dropped as they turned were let go more in anger than with accurate aim. Thirty feet down the L-boat, her forward tanks flooding and her nose down at an angle of 15°, was driving her gauge round in an urgent hurry to gain depth. Seventy-eighty-ninety-five. "Hold her up now. Blow number two external. Stop both-dammit, hold her up, man. Stop both-hold on, everybody!"
The gauge-needle went round with a rush; there was a heavy shock, and the boat's bow sprang upwards (the captain, holding with one arm to the periscope and bracing his feet, had a momentary vision in his memory of a photograph of a tank climbing a parapet-a trivial recollection of a Bond Street shop window); she rolled to starboard as the gauge-needle jumped back from a hundred and twenty to the hundred mark, then bounced again as her tail touched, rolled to port, and slid along the bottom to rest on an even keel. Whang-bang-whang. The explosions of depth-charges passed overhead and made the lights flicker; then a succession of fainter reports continuing to the southward told of a chase misled in the mist. A voice spoke from a tube at the captain's side, "Did they hit, sir?"
The captain was feeling vaguely in his pockets. A reaction from the tense concentration of the last few minutes was approaching, and the habits of an habitual smoker were calling to him. "Yes, I think so," he said; "but there were so many explosions I can't swear to it. We'll know when we get in."
He took a cigarette from his case and lit it. The match burnt blue and went out quickly; the cigarette gave him a mouthful of acrid smoke, and also failed. The short time the conning-tower had been open before the destroyers came had not cleared the air, and the work and excitement of the crew in the attack had consumed as much oxygen as if the boat had been diving for a summer's day. There is only one kind of cigarette which will burn in bad air; a stoker kneeling by the main line flooding-valve fumbled in his cap, and then held out a packet of five of them to the captain. The officer took one with a grunt of thanks, lit it, and spoke again. "Watch remain at diving-stations-fall out the rest-torpedo hands reload."