On the last day of March, a week before war was declared, Admiral Sims and his aide, Commander J. V. Babcock, boarded the steamship New York, entered upon the passenger list as "S. W. Davidson" and "V. J. Richardson." Their fellow voyagers had no idea that "Mr. Davidson" was an admiral of the United States Navy going abroad on an important mission, and "Mr. Richardson" was his aide.
Reaching Liverpool April 9th, after an uneventful voyage, the New York, as it approached the outer harbor, struck a mine. Though the ship was not damaged beyond repair, it was crippled, and the passengers were transferred to another vessel and taken ashore. At the dock the American officers were welcomed by Rear Admiral Hope, and they found that a special train, provided by the Admiralty, was waiting to take them to London. Admiral Sims on arrival there at once conferred with Ambassador Page and the British naval authorities, and was admitted to the confidence of the Admiralty.
Since his departure from America, there had been a radical change in the situation. The United States had declared war against Germany, and we were free to deal with the Allies as associates in the great conflict. While Sims was having his first interview with the authorities in London, we were in conference at Washington with the ranking British and French admirals in the Western Atlantic. In fact a working agreement was perfected, and orders had been issued to send destroyers to Europe before we received Sims' first dispatch. Thus Sims in London and our authorities in Washington carried out with the utmost cordiality that splendid coöperation between the British and American navies which continued throughout the war and which has hardly a parallel in naval history.
In his first cablegram from London, April 14, 1917, Sims reported:
The submarine issue is very much more serious than the people realize in America. The recent success of operations and the rapidity of construction constitute the real crisis of the war. The morale of the enemy submarines is not broken, only about fifty-four are known to have been captured or sunk and no voluntary surrenders have been recorded. ***
Supplies and communications of forces on all fronts, including the Russians, are threatened and control of the sea actually imperilled.
German submarines are constantly extending their operations into the Atlantic, increasing areas and the difficulty of patrolling. Russian situation critical. Baltic fleet mutiny, eighty-five admirals, captains, and commanders murdered, and in some armies there is insubordination.
The amount of British, neutral and Allied shipping lost in February was 536,000 tons, in March 571,000 tons, and in the first ten days of April 205,000 tons. With short nights and better weather these losses are increasing.
The Germans, he said, had seventy mine-laying submarines, and were building new ones at a rate approaching three a week.
What were the British doing to meet this perilous situation? What plans did they have to defeat the U-boats? That was what we particularly wanted to know, and were surprised when it was not stated in that dispatch.