Clout took from his pocket the canvas-covered stopper, and dipped it into the warm pitch.
“Make sure of it, Mr. Clout,” said Hornblower.
Clout rammed the stopper into the hole in the outer head. The action cut off the sound of the hissing fuse, but everyone in the boat knew that the fire was still pursuing its inexorable way inside. Clout smeared pitch thickly about the stopper and then moved out of the way.
“Now, my hearty,” he said to the sailmaker’s mate.
This last needed no urging. Needle and palm in hand, he took Clout’s place and sewed up the canvas cover over the top of the keg.
“Keep those stitches small,” said Hornblower; the sailmaker’s mate, crouching over instant death, was not unnaturally nervous. So was Hornblower, but the irritation caused by the previous failure made him anxious that the work should be well done.
The sailmaker’s mate finished the last stitch, oversewed it, and, whipping out his sheath knife, cut the twine. There could be hardly anything more harmless in appearance than that canvas-covered keg. It looked a stupid, a brainless object, standing there in the boat. Rout was already daubing pitch over the newly-sewn end; the sides and the other end had been thickly pitched before the keg was put into the launch.
“Now the line,” said Hornblower.
As on the previous occasion a loop of line attached to the keg was passed round the mooring line of the buoy and secured to the keg again.
“Hoist it, you two. Lower away. Handsomely.”
The keg sank below the surface, dangling on the lowering line as the men let it down hand over hand. There was a sudden relief from tension in the boat, marked by a sudden babble of talk.
“Silence!” said Hornblower.
Even though the thing was invisible now, sinking down to the bottom of the Bay, it was still deadly — the men did not understand that. One of the divers was already sitting on the gunwale, a cannon-ball in his hands — that was a ridiculous moment for Hornblower to remember that he had not carried out his earlier resolution to get in a store of rocks for that purpose — and his chest expanding and contracting. Hornblower would have liked to tell him to make certain to place the powder keg to the best advantage, but that was impossible owing to the difficulties of language. He had to content himself with a glance, half encouragement and half threat.
“Bottom, sir,” announced the seaman at the lowering line.
The diver slipped from the gunwale and vanished under the surface. Down there with the powder charge and the glowing fuse he was in worse peril even than before. “They’ve seen one of their mates blown to bits using a flying fuse off Cuddalore,” McCullum had said. Hornblower wanted nothing like that to happen now. It occurred to him that if it were to happen the launch, with him in it, would be on top of the explosion and turmoil, and he wondered what was the mysterious force that always drove him into voluntarily taking part in dangerous adventures. He thought it must be curiosity, and then he realized that it was a sense of shame as well; and it never occurred to him that a sense of duty had something to do with it too.
The second diver was sitting on the gunwale, cannon-ball in hand and breathing deeply, and the moment the first diver’s head broke water he let himself ship down and vanished. “I’ve put the fear of God into ‘em,” McCullum had said. “I’ve told ‘em that if the charge explodes without being properly placed they’ll all get two dozen. An’ I’ve said we’re here to stay. No matter how long we try to get the money up. So you can rely on ‘em. They’ll do their best.”
And they certainly were doing their best. Looney was waiting on the gunwale now, and down he went as soon as the second diver appeared. They wanted to waste no time at all. Not for the first time Hornblower peered overside in the attempt to see down through the water, unsuccessfully again. It was clear, and the loveliest deep green, but there was just sufficient lop and commotion on the surface to make it impossible to see down. Hornblower had to take it for granted that deep down below, in semi-darkness at least, and amid paralysing cold, Looney was dragging the powder charge towards the wreck and shoving it under the break of the poop. That powder keg under water could weigh little enough, thanks to the upthrust that Archimedes discovered, twenty centuries ago.
Looney reappeared, and the first diver instantly went down to replace him. This business was for the divers a gamble with life and death, a losing lottery. If the charge were to explode prematurely it would be chance that would dictate who would happen to be down there with it at that moment. But surely it could not take long to move the charge a few yards along the bottom and into the right place. And down there, he hoped, the fire was creeping along the coils of the fuse, sandwiched tight between the two barrel-heads. The philosophers had decided chat fuses were able to burn in the absence of air — unlike candles — because the nitre that permeated the cord supplied the same combustible substance that air supplied. It was a discovery that went close to solving the problem of life — a human being’s life went out like a candle’s in the absence of air. It might be reasonably expected soon that the discovery might be made as to how to maintain life without air.
Yet another dive. The fire was hurrying along the fuse. Clout had allowed enough for an hour’s burning — it must not be too little, obviously, but also it must not be too much, for the longer the keg was exposed to the water pressure the greater the chance of a weak point giving way and water seeping in. But Clout had pointed out that in that confined space between the barrel-heads the heat would not be able to escape; it would grow hotter and hotter in there and the fuse would burn faster — the fire might even jump from one part of the coil to another. The rate of burning, in other words, was unpredictable.
The diver who had just appeared gave a sharp cry, in time to prevent the next one — Looney — from going down. An eager question and answer, and Looney turned to Hornblower with a waving of hands.
“Get that man on board,” ordered Hornblower. “Up anchor!”
A few strokes of the oars got the launch under weigh; the Ceylonese in the bows were chattering like sparrows at dawn.
“Back to the ship,” ordered Hornblower.
He would go straight on board without looking back once; he would not compromise his dignity by awaiting an explosion which might never come. The tiller was put over and the launch began her steady course towards Atropos.
And then it happened, while Hornblower’s back was turned to it. A sullen, muffed roar, not very loud, as if a gun had been fired in a distant cave. Hornblower swung round in his seat just in time to see a bulging wave overtake them, heaving up the stern of the launch. The stern sank and bow rose, the launch pitching violently, like a child’s toy boat in a tub. The water that surged round them was discoloured and dark. It was only for a few seconds that the violent commotion lasted, and then it passed on, leaving the launch rocking jerkily.
“She’s gone up, sir,” said Clout, quite unnecessarily.
The hands were chattering as much as the Ceylonese.
“Silence in the boat!” said Hornblower.
He was angry with himself because the unexpected sound had caused him to leap in his seat. He glowered at the men, and they fell into a hushed silence.
“Starboard your helm,” growled Hornblower. “Give way!”
The launch swung round and retraced its course towards the scene of the explosion, marked by a dirty patch of water. Half a dozen big bubbles rose to the surface and burst as he watched. Then something else came up, and something else, dead fish floating up to the surface, their white bellies gleaming under the sky. The launch passed one which was not quite dead; it was making feeble efforts, just perceptible, to right itself and descend again.