He went down, submerged, and then rose to a giddy height again.

As he caught a great breath of air, he saw that McTee was no longer on the timber.
A shout reached him, the sound being cut off in the middle by the noise of the wind and waves.

He saw McTee a dozen feet away, swimming furiously.

He came almost close enough to touch the timber with his hands, and then a twist of the wave separated them.

Harrigan worked down the timber until he reached the end of the stanchion which was nearest Black McTee.