Telegram from the Commander-in-Chief, Home Fleet [Admiral Sir John Jellicoe] to Admiralty, reporting that the Grand Fleet's sweep on 10 September was probably reported to the Germans by a complete cordon of apparently neutral fishing boats established about 150 miles from Heligoland [Germany]: Jellicoe suggests that the Dogger Bank Patrol take some of them into harbour for a strict search for wireless gear, and proposes a similar sweep further south to search for mines. [Carbon].