Letter from Rear-Admiral David Beatty [Commander, 1st Battle Cruiser Squadron], on the situation in the North Sea and defences for the naval bases, suggesting that Rear- Admiral John de Robeck [Admiral of Patrols] should be put in charge of countering the submarine and mine menace, with more disciplined forces; he also suggests that if the Scapa Flow [Orkney, Scotland] anchorage were to be used again, steps should be taken to deal with the spies there, with the introduction of martial law. [Incomplete typescript copy].