"Port a point, Mr Bush!" yelled Hornblower — already the group of boats was out of the field of fire of the gun, and yet was far too tempting a mark to ignore.
The French pilot groaned as he helped to run the gun up, but Hornblower had no time for his patriotic protests.
He sighted carefully, and fired. Again there was no sign of a splash — the ball had taken effect, but presumably upon the boat which had already been hit, for immediately afterwards the other two drew away from their water-logged fellow to resume the pursuit.
Brown was changing over the men at the sweeps — Hornblower remembered now that he had heard him cheering hoarsely when he had scored his hit — and Hornblower found a second in which to admire his masterful handling of the men, prisoners of war and escaping slaves alike.
There was time for admiration, but no time for envy.
The pursuers were changing their tactics — one boat was heading straight at them, while the other, diverging a little, was still heading to intercept them.
The reason was soon obvious, for from the bows of the former boat came a puff of smoke, and a cannon-ball raised a splash from the surface of the water on the cutter's quarter and skipped past the stern.
Hornblower shrugged his shoulders at that — a three-pounder boat gun, fired from a platform far more unsteady even than the Witch of Endor, could hardly do them any harm at that range, and every shot meant delay in the pursuit.
He trained his gun round upon the intercepting boat, fired, and missed.
He was already taking aim again before the sound of the second shot from the boat gun reached his ears, and he did not trouble to find out where the ball went.
His own shot fell close to its target, for the range was shortening and he was growing more experienced with the gun and more imbued with the rhythm of the long Atlantic swell which rocked the Witch of Endor.
Three times he dropped a shot so close to the boat that the men at the oars must have been wetted by the splashes — each shot deserved to be a hit, he knew, but the incalculable residuum of variables in powder and ball and gun made it a matter of chance just where the ball fell in a circle of fifty yards radius, however well aimed.
Ten guns properly controlled, and fired together in a broadside, would do the business, but there was no chance of firing ten guns together.
There was a crash from forward, a fountain of splinters from the base of a stanchion, and a shot scarred the deck diagonally close beside the fore hatchway.
"No you don't," roared Brown, leaping forward with his rope's end.
"Keep pulling, you bastard!"
He jerked the scared galley slave who had dropped his sweep — the shot must have missed him by no more than a yard — back into position.
"Pull!" he shouted, standing, magnificent in his superb physique, right in the midst of them, the weary ones lying on the deck, the others sweating at the sweeps, the knotted rope swinging from his hand.
He was like a lion tamer in a cage.
Hornblower could see there was no need for him and his pistols, and he bent again, this time with a real twinge of envy, over his gun.
The boat which was firing at them had not closed in at all — if anything she had fallen a trifle back — but the other one was far nearer by now.
Hornblower could see the individual men in her, the dark heads and the brown shoulders.
Her oars were still for the moment, and there was some movement in her, as if they were re-arranging the men at the oars. Now she was in motion again, and moving far faster, and heading straight at them.
The officer in charge, having worked up as close as this, had double-banked his oars so as to cover the last, most dangerous zone with a rush, pouring out the carefully conserved energy of his men prodigally in his haste to come alongside.
Hornblower estimated the rapidly diminishing range, twirled the elevating screw, and fired.
The shot hit the water ten yards from her bows and must have ricochetted clean over her.
He sponged and loaded and rammed — a miss-fire now, he told himself, would be fatal, and he forced himself to go through the routine with all the exactness he had employed before.
The sights of the gun were looking straight at the bows of the boat, it was point blank range.
He jerked the lanyard and sprang instantly to reload without wasting time by seeing where the shot went.
It must have passed close over the heads of the men at the oars, for when he looked along the sights again there she was, still heading straight at him.
A tiny reduction in elevation, and he stepped aside and jerked the lanyard. He was dragging at the train tackles before he could look again.
The bows of the boat had opened like a fan.
In the air above her there was a black dot — a water breaker, presumably, sent flying like a football by the impact of the shot, which had hit clean and square upon her stem at water level.
Her bows were lifted a little out of the water, the loose strakes spread wide, and then they came down again and the water surged in, and she was gunwale deep in a flash, her bottom smashed, presumably, as well as her bows, by the passage of the shot.
Brown was cheering again, and Bush was capering as well as he could with a wooden leg while steering, and the little French pilot at his side pulling in his breath with a sharp hissing noise.
There were black dots on the surface of the blue water where men struggled for their lives — it must be bitter cold and they would die quickly, those who could not find support on the shattered hull, but nothing could be done to help them. Already they had more prisoners than they could conveniently handle, and any delay would bring the other boat alongside them.
"Keep the men at work!" said Hornblower, harshly, to Brown, and unnecessarily. Then he bent to reload the gun once more.
"What course, sir?" asked Bush, from the tiller.
He wanted to know if he should steer so as to allow fire to be opened on the third boat, which had ceased firing now and was pulling hastily towards the wreck.
"Keep her as she is," snapped Hornblower.
He knew perfectly well that the boat would not annoy them further; having seen two of her fellows sunk and being of necessity vastly overcrowded she would turn back sooner than maintain the contest.
And so it proved.
After the boat had picked up the survivors they saw her swing round and head towards Noirmoutier, followed by a derisive cheer from Brown.
Hornblower could look round him now.
He walked aft to the taffrail beside Bush — it was curious how much more natural it felt to be there than at the gun — and scanned the horizon.
During the fight the cutter had made very decided progress under her sweeps.
The mainland was lost in the faint haze; Noirmoutier was already far behind.
But there was still no sign of a breeze.
They were still in danger — if darkness should find them where boats could reach them from the islands a night attack would tell a very different story.
They needed every yard they could gain, and the men must go on slaving at the sweeps all through the day, all through the night too, if necessary.