Why, his balloons and his submersibles would not be a patch upon what are actually in use these days."
"The Hilltop Boys on Lost Island"
Cyril Burleigh
She was about to sail for Alexandria, carrying back, through an area infested with enemy submersibles, some of the cargo already discharged and reloaded in the southern port.
"Command"
William McFee
They have, though, and I heard Mr. Churchill say that the government hoped within another month to have rid British waters entirely of the German submersibles.
"The Boy Allies Under the Sea"
Robert L. Drake