The appearance off the American coast of the unidentified submarine, or submarines, which made the raid on American and neutral shipping in May and June, 1918, was not altogether unexpected. For several weeks the American naval authorities had been searching for U-boats in home waters in consequence of a dispatch from the British Admiralty stating that two German submarines of the latest type, with a cruising capacity of 10,000 miles, had left the North Sea and were observed proceeding westward, probably in an attempt to cross the Atlantic. The first information that German U-boats were conducting a transatlantic campaign was brought to New York City on June 4 by Captain Humphrey G. Newcombe and the ten members of the crew of the American four-masted schooner Edward H. Cole, which was sunk with bombs on the afternoon of June 2, fifty miles southeast of Barnegat, N. J. All were agreed that the U-boat was about 200 feet long, of more than 20 feet beam, and with 5 feet freeboard, that it carried a three-inch gun fore and aft, and a one-pounder quick-firer amidships, and that it had a speed of 17 knots. The mate of the Edward H. Cole told how he had noticed a submarine moving around the vessel at a high speed and believed that it was an American craft with Naval Reserve cadets on board, who were trying to have some fun with the sailors of the merchant ship. "I thought," the mate continued, "that it would be a good idea to have a little fun with our skipper, who had turned in for a nap in his cabin, and I yelled down the skylight, 'Tumble up on deck lively, Cap! There's a big German submarine close astern, getting ready to attack us.' Then I took the marine glasses and looked through them at the stern of the U-boat, where her ensign was flapping limply against the short flagstaff. For a moment or two I could not make out her nationality, and then a gust of wind came and blew the ensign straight so that I could see that it was the German flag, and then I shouted in earnest to Captain Newcombe, 'It's no joke this time. By gosh, she is a German submarine!'" The schooners Hattie Dunn and Edna were the first vessels sunk--on May 25. Their crews, as well as that of the schooner Hauppauge, which was sunk three days later, numbering twenty-three men, were taken on board the submarine and kept prisoner there for eight days. When the tank steamer Isabel Wiley was sunk, on June 2, the twenty-three prisoners were placed, with the crew of the Isabel Wiley, in the tanker's four boats and left to find their way to the shore. They were picked up by a coastwise steamer and brought safely back to land. Captain Charles E. Holbrook of the Hattie Dunn, the first skipper to encounter the U-boat, thus described his experience: