The first submarine that came over in 1918 was the U-151, and the first craft she sank were three small schooners, the _Hattie Dunn_, _Hauppauge_ and _Edna_, all sent down by bombs the same day, May 25th. To prevent disclosure of her presence, she kept the crews of all three, 23 men, imprisoned aboard her, and sailed well out at sea, submerging whenever a large vessel was sighted, until June 2nd, when she sank three other schooners, the _Isabel Wiley_, _Jacob M. Haskell_ and _Edward H. Cole_; a small steamer, the _Winneconne_, and late in the afternoon attacked the steamships _Texel_ and _Carolina_. All the _Texel's_ crew were saved, but they rowed to shore and the story of her sinking was not told until they reached Atlantic City next morning. En route from Porto Rico to New York, with a cargo of sugar, the _Texel_ was stopped at 4:21 p. m. by the firing of shells, one of which struck the vessel, and an hour later was sunk by bombs placed aboard. By sinking only small boats which had no radio apparatus, and holding their crews prisoners, the U-151 had for ten days concealed her whereabouts. But the Navy had warned shipping to be on the lookout, and on May 16th had sent this message to all section bases: _Most Secret_:--From information gained by contact with enemy submarine, one may be encountered anywhere west of 40 degrees west. No lights should be carried, except as may be necessary to avoid collision, and paravanes should be used when practicable and feasible. Acknowledge, Commander-in-Chief Atlantic Fleet; Commander Cruiser Force, Commander Patrol Squadron, Flag San Domingo, Governor Virgin Islands, Commandants 1st to 8th, inclusive, and 15th Naval Districts. 13016. OPNAV. The Department had been notified from London Headquarters early in May that a large-type submarine had left Germany for American waters, and on May 15th, the British steamer _Huntress_ reported that she had escaped a torpedo attack in latitude 34°-28' north, longitude 56°-09' west, about 1,000 miles east of Cape Hatteras. Four days later the _Nyanza_ was attacked 300 miles from our coast; the _Jonancy_ was gunned about 150 miles at sea, and on May 21st the British steamer _Crenelia_ reported sighting a submarine. This information was disseminated to all section bases, coast defense commanders and forces afloat; and in addition to the regular patrols, special sub-chaser detachments were organized, and ordered to proceed, upon the receipt of any "SOS" or "Allo" message, to the vessel attacked or in distress.