As has been said before, the British Admiralty had adopted a new method of defence for the rudders and screw-propellers of naval vessels against the attacks of submerged craft. The work of constructing the new appliances had been pushed forward as fast as possible, but so far only one of these had been finished and attached to a man-of-war.

The Llangaron was a recently built ironclad of the same size and class as the Adamant; and to her had been attached the new stern-defence. This was an immense steel cylinder, entirely closed, and rounded at the ends. It was about ten feet in diameter, and strongly braced inside. It was suspended by chains from two davits which projected over the stern of the vessel. When sailing this cylinder was hoisted up to the davits, but when the ship was prepared for action it was lowered until it lay, nearly submerged, abaft of the rudder. In this position its ends projected about fifteen feet on either side of the propeller-blades.

It was believed that this cylinder would effectually prevent a crab from getting near enough to the propeller or the rudder to do any damage. It could not be torn away as the stern-jacket had been, for the rounded and smooth sides and ends of the massive cylinder would offer no hold to the forceps of the crabs; and, approaching from any quarter, it would be impossible for these forceps to reach rudder or screw.

The Syndicate's little fleet arrived in British waters late in the day, and early the next morning it appeared about twenty miles to the south of the Isle of Wight, and headed to the north-east, as if it were making for Portsmouth. The course of these vessels greatly surprised the English Government and naval authorities. It was expected that an attack would probably be made upon some comparatively unprotected spot on the British seaboard, and therefore on the west coast of Ireland and in St. George's Channel preparations of the most formidable character had been made to defend British ports against Repeller No. 11 and her attendant crabs. Particularly was this the case in Bristol Channel, where a large number of ironclads were stationed, and which was to have been the destination of the Llangaron if the Syndicate's vessels had delayed their coming long enough to allow her to get around there. That this little fleet should have sailed straight for England's great naval stronghold was something that the British Admiralty could not understand. The fact was not appreciated that it was the object of the Syndicate to measure its strength with the greatest strength of the enemy. Anything less than this would not avail its purpose.

Notwithstanding that so many vessels had been sent to different parts of the coast, there was still in Portsmouth harbour a large number of war vessels of various classes, all in commission and ready for action. The greater part of these had received orders to cruise that day in the channel. Consequently, it was still early in the morning when, around the eastern end of the Isle of Wight, there appeared a British fleet composed of fifteen of the finest ironclads, with several gunboats and cruisers, and a number of torpedo-boats.

It was a noble sight, for besides the warships there was another fleet hanging upon the outskirts of the first, and composed of craft, large and small, and from both sides of the channel, filled with those who were anxious to witness from afar the sea-fight which was to take place under such novel conditions. Many of these observers were reporters and special correspondents for great newspapers. On some of the vessels which came up from the French coast were men with marine glasses of extraordinary power, whose business it was to send an early and accurate report of the affair to the office of the War Syndicate in New York.

As soon as the British ships came in sight, the four crabs cast off from Repeller No. 11. Then with the other two they prepared for action, moving considerably in advance of the repeller, which now steamed forward very slowly. The wind was strong from the north-west, and the sea high, the shining tops of the crabs frequently disappearing under the waves.

The British fleet came steadily on, headed by the great Llangaron. This vessel was very much in advance of the others, for knowing that when she was really in action and the great cylinder which formed her stern-guard was lowered into the water her speed would be much retarded, she had put on all steam, and being the swiftest war-ship of her class, she had distanced all her consorts. It was highly important that she should begin the fight, and engage the attention of as many crabs as possible, while certain of the other ships attacked the repeller with their rams. Although it was now generally believed that motor-bombs from a repeller might destroy a man-of-war, it was also considered probable that the accurate calculations which appeared to be necessary to precision of aim could not be made when the object of the aim was in rapid motion.

But whether or not one or more motor-bombs did strike the mark, or whether or not one or more vessels were blown into fine particles, there were a dozen ironclads in that fleet, each of whose commanders and officers were determined to run into that repeller and crush her, if so be they held together long enough to reach her.

The commanders of the torpedo-boats had orders to direct their swift messengers of destruction first against the crabs, for these vessels were far in advance of the repeller, and coming on with a rapidity which showed that they were determined upon mischief. If a torpedo, shot from a torpedo-boat, and speeding swiftly by its own powers beneath the waves, should strike the submerged hull of a crab, there would be one crab the less in the English Channel.