A mighty thrashing and foaming sounded astern and the _Adventurer_ trembled, hesitated and began to churn her way backward.
Perry, boat-hook in hand, was sliding and stumbling along the wet deck.
He reached the bow just in time to see the menacing face of a high stone jetty disappear again into the mist.

Phil, clinging to the flag-pole, was sprawled on the deck with his legs stretched out to fend the boat off.
"Just in time!" he muttered, pulling himself back to safety.

"Did you see it, Perry!" "Did I see it?
I almost fell overboard! That's enough, Steve!" The _Adventurer_ stopped going astern and Steve called anxiously from the wheel.

"What was it, Phil ?" he questioned.
"A breakwater about ten feet high! We almost hit it!" "A breakwater!" Steve turned swiftly to the chart.

"Then I know where we are at last! Look here, Joe!" He pointed.