The inventor nodded.
He closed the metal shutters over the windows by pulling a lever, and geared the steering wheel to the stern rudder.
Then he started the big propellers fanning the air, and they drove the boat through the water at a moderate rate.
“It’s as good as a sthameboat she bes,” said Barney.
“Yes. The propellers move her fairly well.”
“By jingo! dey cotch us, dough, wif dem yere rowboats.”
“I expect they will, Pomp.”
Just then one of the pirates yelled in Spanish:
“Surrender!”
“Never!” replied Frank.