"What island?"
"Island called Kaiserland. There are also a nest of pirates here.
We've just captured the wireless room."
"How long can you hold out?"
"Indefinitely."
"Good! I'll summon assistance and we'll search South American waters thoroughly. We'll find you sooner or later."
"Very well," Jack flashed back, "but be careful. These waters are infested with the enemy and they'll sink you if possible."
"Don't worry about us," was the Virginia's reply. "We can take care of ourselves. Can't you give me an idea where you are?"
Jack thought rapidly. Then he sent this:
"We were aboard a pirate ship three nights ago and sank a German raider 75 miles from this island. If you can pick up the wreck, we are due west."
"Thanks. We'll find it if it is still afloat. What's the strength of this pirate crew?"