"Fire!" cried Lord Hastings.
"Boom!"
Jack had fired the gun.
There was another startled exclamation from ahead.
"Did you hit her?" asked Lord Hastings.
"Think so, sir," replied Jack. "Don't see how I could have missed at that distance."
"We'll cruise about a bit and see," said Lord Hastings.
He gave the command and the motorboat slowed down.
For half an hour the little craft circled about, but there was no trace of the other boat. All aboard flashed searchlights about the water, and the larger light in the bow was turned on, casting a bright ray over the water.
"They've either gone away or to the bottom, sir," said Frank.