The United States blue-jackets often have to perform the services of a soldier in time of war, and that they may be familiar with those duties special drills are devised. Often, when a ship is in port, the men will be landed and go through these drills on shore. But now, in the case of the Georgetown, they took place on the big decks.

The manual of arms was gone through with again and again, and the light artillery was brought up and put into action against an imaginary enemy, blank charges being fired. Frank, Ned and their chums greatly enjoyed this drill.

“If you do as well when you’re ordered ashore to proceed against a howling mob, you’ll be all right,” remarked one of the officers at the conclusion of some snappy work one day.

“Oh, we’ll do it!” said Ned, to his brother.

While it was not for a moment thought that the Georgetown would be endangered from the shots of any hostile ship, or from the guns of a fort on shore, still drills were held that would enable the men to repair any possible damage in such a contingency.

These drills were collision, fire-quarters, general-quarters, and clearing ship for action.

The signal for collision drill was unexpectedly sounded one day when they were but a short distance from Havana. At once all the water-tight doors in the battleship were closed by machinery, and Frank, Ned and the others rushed to the various stations that had previously been assigned to them.

It was the work of the squad, or division, that included Frank and Ned to put over the side a thick, heavy collision mat, which was lowered to cover an imaginary hole, supposed to have been blown in the ship below the water-line or near it by a torpedo or projectile. The object of the collision mat is to stop the inrush of water until the water-tight doors can be made fast, or dropped into place.

In order to give as many as possible practice at this drill it was gone through with a number of times, several collision mats being used. It was hard work, for the mats were heavy, and Frank and Ned were not sorry when it was over.

Havana was reached in due season, and shore liberty was allowed to all in turn, for the ship was to remain there two days. Frank and Ned greatly enjoyed the novel sights ashore, and were rather sorry when they were under way again. But they were also eager for the work ahead of them, and anxious about the prospect of aiding their uncle, and saving, if possible, their own fortunes.