“That’s a good idea, too,” agreed Frank. “When we get to a port we can turn the submarine over to the English authorities as a prize of war. They’ll probably be glad enough to get the machine.”

“Then we’ll head for the little old U. S. A.!” cried Jimmie.

“You’re right we will. When we get there, we’ll chase ourselves out to Long Island. The first thing I’ll do will be to get the factory started on another engine like the Grey Eagle’s!” declared Harry.

“Good enough! Now let’s be ‘wenting’!” added Jimmie.

“But, boys,” objected Ned, “this hit or miss fashion of navigating is not correct. Something may happen to change our course. If we don’t know what we are doing, we might get into lots of trouble!”

“Maybe you’re right, Ned!” assented Frank. “What shall we do?”

“I think we’d better cruise carefully along on the surface until we see a ship. We can ask them for our latitude and longitude. From that we’ll be able to lay a course to any point.”

“Maybe they’ll give us a chart, too!” put in Harry.

“All right, then, here goes!” shouted Jimmie preparing to slide down the ladder. “Somebody’ll have to keep on deck.”

Harry at once followed Jimmie into the interior. The engines responded to his touch. The new “U-13” sprang forward half submerged.