The success of _Tenby Castle_ was such that half a dozen other trawlers were selected and stationed off that coast except in the wild wintry months, and this idea, as we shall presently see, was developed still further, but it will assist our interest if we appreciate first the difficulties as exemplified in the case of the _Tenby Castle_. On the last day of June, 1915, this trawler was about five miles N.E. of the Kya Islet, and it was not quite midday, when she sighted a steamer coming down from Nero Sound; so she closed her and read her name, _Pallas_. Inasmuch as the latter was showing no colours, _Tenby Castle_ now hoisted the White Ensign and the international signal to stop immediately. This was ignored, so the trawler came round and saw she was a German ship belonging to Flensburg, and fired a shot across the enemy’s bow. The German then stopped her engines, ported her helm, and headed in the direction of the coast, having a certain amount of way on. The trawler closed and ordered her to show her colours, but the German declined; so the latter was then told to steer to the westward, which he also refused to do. Lieutenant Randell, informing him now that he would give him five minutes in which to make up his mind either to come with him or be sunk, sent a wireless signal informing H.M. ships of the Tenth Cruiser Squadron, then went alongside the German and put an armed guard aboard; but the captain of _Pallas_ rang down for full speed ahead and starboarded his helm, whereupon _Tenby Castle_ fired a couple of shots at the steamer’s steering gear on the poop, damaging it. The German stopped his engines once more, but the ship was gradually drawing towards the shore, so that when _Victorian_ arrived _Pallas_ was about two and a half miles from the land, thus being just within territorial waters, and had to be released. There had been no casualties.