It was not the easiest thing in the world to glimpse such a dusky looking object in such uncertain light, and with the waves rising and falling. But it happened that while they had been talking, Francois managed to keep his eye fixed on the boat, and so he was able to point it out to them.

"Oh! joy, she is still heading right for us!" said Jimmy, who had felt the slump worse than any of the others, because of the fact that the idea was his own.

What he said was true, and all of them could see that the two men in the boat were pulling hard to come along with the sweep of the sea.

"Better get ready to lay the trap, hadn't we?" asked Jack, nervously.

"Oh! that will be easy enough when we make sure of where they expect to board," the patrol leader told him; but, at the same time, he knew full well that the boat would naturally have to swing around to the sheltered side of the wreck, before those in it could hope to pull in.

All of them watched, with their hearts beating like trip-hammers, so excited had the sudden hope made them.

The seconds seemed to pass on leaden wings to Jimmy. Several times he moved uneasily, and Ned could hear the sigh that welled up from the depths of his heart. This happened when, to his excited fancy, the oncoming boat seemed to remain motionless on the swelling wave for a brief period. Possibly at such times the rowers ceased their labors, for the purpose of scrutinizing the dark hulk, which they were then approaching, as though to make sure that they would find all well.

Each time, however, they started to rowing again, and as they drew nearer to the shore, of course, they had to put more strength into their strokes, because of the suction of the eddies that surged around the bow of the derelict, standing at this time of nearly full tide, well in the water.

When they changed their course, so as to swing around to leeward of the wreck, Ned considered that it was time he and his comrades crept along in the shelter of the bulwark, and made ready to receive the uninvited guests.

First of all, they must allow them to come aboard, and also secure the boat. Any premature action was bound to ruin the whole affair. If one of the men got away, or the boat was set adrift, it would avail the prisoners of the hulk nothing. They wanted a means for leaving the hostile land, and the mere capture of these two men, who evidently intended to take them by surprise, would not satisfy them at all.