One day one big freighter did not answer signals promptly. Perhaps she could not read them. In these war times it is not too easy to get crews who are sea-wise in every detail—the expert signalman among the officers might have been off watch and having a nap. Anyway, one of our little fighting fellows went bounding after her. It was like watching a sheep-dog at work. The war-ship moved up from behind, drew up, and then, showing her teeth, headed the freighter the other way and held her headed that way while she put an officer aboard and asked an explanation, which was probably given and doubtless all right, for the officer came back and the freighter resumed her regular course. Day in and day out that was the way of it, every passing ship being viewed as suspect and our own ships, of varying speeds and tonnage, trying to keep a good alignment.

The weather generally was fine, but one morning we ran into a fog. A fog has its virtues; a submarine cannot see you in a fog. [30]But neither can you see a submarine. And somewhere handy to you is a bunch of your own ships, and no telling when one of them may come riding out of the mist and climb aboard by way of your port or starboard quarter!

A whistle by day or a search-light by night would have been a great help to our naval officer on the bridge during that fog, but he was denied that. So he made out (as did every other commander on every other bridge during the fog) with whatever other means he could devise. Nothing happened to us.

The fog passed on, and then one day came a slaty gray sea and a slaty sky. Gray seas look hard; white crests moving across gray seas look hard too. Our naval officer took time to look around on them. Gray hulls were smashing high bows into them, making boiling white water