There was no time to be lost. I hastened back by the most direct way I could find, to the dockyard gates. The little postern was still unlocked, and I passed out, the sentry again taking no notice of my passage.

But at the first street corner I saw a man in seafaring dress who fixed a very keen gaze on me as I came up, and saluted me by touching his cap.

“Good-night,” I said in a friendly voice, slowing down in my walk.

“Good-night, sir. Beg pardon, Captain,”—he came and moved along beside me—“but you don’t happen to know of a job for a seafaring man, I suppose?”

I stopped dead, and looked him straight in the eyes.

“How many men do you estimate are required to navigate a submarine?” I asked.

“Fifteen,” was the prompt answer.

“How soon can you have them here?” was my next question.

The fellow glanced at his watch.