Then the fog closed in again, and we had to come back down.

There the natural wind fell off and thick fog closed in.

Then there was that ship we heard come in before the fog closed down.

The fog closed in on them and the day turned chill.

By the time the wind and fog closed in, they were through.

When the fog closed in they had no more idea of their direction than a blind man.

The fog closed around the boat and swallowed it up.

Then the fog closed down again, and in it we slipped through the French fleet.

One moment he was visible, the next the fog closed around him.

So Thorstein took his best guess, just before the fog closed in again.