I shall try to go in." A fog-siren somewhere on the invisible shore was sending out its unearthly blasts.

Then a whistle seemed to cut the gloom right ahead, and a big black shape loomed through the murk.

The _Merry Seas_ sounded her warning, and the helm was jammed hard a-starboard.

Another shriek came from the phantom that had seemed to rise right out of the sea.

With that shriek, she also swung off.
"I thought we were in for a collision!" said Frank, breathing more freely.