In order to encourage resistance on the part of crews of British vessels attacked by German submarines, the British Government rewarded the crew of the steamship _Vosges_. It was announced on April 9, 1915, that the captain had been given a commission as a lieutenant in the Royal Naval Reserve and the Distinguished Service Cross; the remaining officers were given gold watches, and the crew were given $15 per man. Rumors had reached the outside world that the German submarines were using hidden spots to store fuel and provisions so that they might go about their raiding without having to return to German ports for reprovisioning. Neutral nations, such as the Netherlands and Norway, found it necessary, to maintain their neutrality, to keep watch for such action. On the 9th of April, 1915, Norwegian airmen reported to their Government that such a cache had been discovered by them behind the cliffs in Bergen Bay. Submarines found there were ordered to intern or to leave immediately, and chose to do the latter. Certain acts of the commanders of German submarines seemed to make it evident that their intention was to sink ships of every description, no matter where found, in order to make the "war zone" a reality, and to make it shunned by neutral as well as belligerent ships. Thus the Dutch steamship _Katwyk_, which lay at anchor seven miles west of the North Hinder Lightship off the Dutch coast, was sunk. This lightship was maintained by the Netherlands Government and stood at the mouth of the River Scheldt, forty-five miles northwest of Flushing. The _Katwyk_ was stationary there on the night of April 14, 1915, when the crew felt a great shock and saw that their ship was rapidly taking water. They managed to reach the lightship in their lifeboats just as their vessel sank. The same submarine sank the British steamer _Ptarmigan_ only a few hours later. Among victims flying the flags of neutral nations the next ship was of American register. This was the tank steamship _Gulflight_, which was torpedoed off the Scilly Islands on the 29th of May, 1915. The hole made in her hull was not large enough to cause her to sink, and she was able to get to port. But during the excitement of the attack her captain died of heart failure and two of her crew jumped into the sea and were drowned. Three days later the French steamship _Europe_ and the British ship _Fulgent_ were sent to the bottom, probably by the same submarine. The month of May, 1915, had opened with greater activity on the part of German submarines than had been shown for many weeks previous. Between the 1st and the 3d of that month seven ships were torpedoed, four of them being British, one Swedish, and two Norwegian. By the 5th of May, 1915, ten British trawlers had been sunk; some of these were armed for attack on either German submarines or torpedo boats. CHAPTER XXXIV SINKING OF THE "LUSITANIA"