Bill caught the sprawling, inert figure, with a cupped hand beneath the chin. Instantly his legs and free arm got into action again, but heading this time in the opposite direction. Up shot the drowning man and his rescuer. Bill’s head was whirling, his faculties were leaving him. The man would sink again if he lost his hold. Slipping the crook of his elbow beneath the unconscious lieutenant’s chin, he held his head close to his side. Would they never reach the surface—and air? What if his own unprotected skull should strike the bulging curve of a vessel’s hull? Sharp pain stabbed him between the eyes—he knew no more.