was able to see more fragments of wreckage farther along the reef.
"Some boat has been battered to pieces along here. There isn't enough wreckage left to tell whether it was a motorboat or a sailing vessel." He scrutinized the mainland. "Nothing there," he announced finally. "Not a sign of life—nor wreckage either. It's all on the reef."
So interested had the boys been in the fragments of broken wood on the jagged rocks that they had not noticed that the motorboat was edging in closer to the reef. There was a strong current at this point and, unnoticed by the boys, the boat was being carried irresistibly forward.
A warning shout from the lads in the Napoli told them of their danger.
Frank had throttled down the engine so that the Sleuth had been almost drifting. Now he sprang for the helm, conscious of the peril that had crept so insidiously upon them.
The great black rocks of the reef loomed closer. The motorboat seemed to be dragged mercilessly toward its doom. The powerful current had the craft firmly in its grasp!
