The recruits are sharing a dangerous voyage across unknown seas but they know there is a safe harbor at the end.

A voyage of a hundred and fifty miles in a comparatively small vessel, over unknown seas, could not but cause him some anxiety.

I cried, "we are about to launch out upon an unknown sea; and where, if I may ask, is the vessel to carry us?"

Now, we can't provide an infallible pilot across that unknown sea.

His love was navigation and the challenge of unknown seas.

It is sooth that my heart did not relish this quest across unknown seas and lands.

"So I sit here, weak and helpless, while others sail into the unknown sea."

But the river-bank had become the shore of an unknown sea.

That's what you were trained for - to sail the unknown sea, to chart it and come home again.

I judged that we must have blown a hun-dred miles before the wind and straight out into an unknown sea!