The officers of the Adamant little understood the resources and intentions of their opponents. Every vessel of the Syndicate carried a magnetic indicator, which was designed to prevent collisions with iron vessels. This little instrument was placed at night and during fogs at the bow of the vessel, and a delicate arm of steel, which ordinarily pointed upward at a considerable angle, fell into a horizontal position when any large body of iron approached within a quarter of a mile, and, so falling, rang a small bell. Its point then turned toward the mass of iron.
Soon after the fog came on, one of these indicators, properly protected from the attraction of the metal about it, was put into position on Crab C. Before very long it indicated the proximity of the Adamant; and, guided by its steel point, the Crab moved quietly to the ironclad, attached itself to its stern-post, and allowed the happy crew of Crab K to depart coastward.
When the fog rose the glasses of the Adamant showed the approach of no crab, but it was observed, in looking over the stern, that the beggarly devil-fish which had the ship in tow appeared to have made some change in its back.
In the afternoon of that day a truce boat was sent from the repeller to the Adamant. It was allowed to come alongside; but when the British captain found that the Syndicate merely renewed its demand for his surrender, he waxed fiercely angry, and sent the boat back with the word that no further message need be sent to him unless it should be one complying with the conditions he had offered.
The Syndicate now gave up the task of inducing the captain of the Adamant to surrender. Crab C was commanded to continue towing the great ship southward, and to keep her well away from the coast, in order to avoid danger to seaport towns and coasting vessels, while the repeller steamed away.
Week after week the Adamant moved southward, roaring away with her great guns whenever an American sail came within possible range, and surrounding herself with a circle of bursting bombs to let any crab know what it might expect if it attempted to come near. Blazing and thundering, stern foremost, but stoutly, she rode the waves, ready to show the world that she was an impregnable British battle-ship, from which no enemy could snatch the royal colours which floated high above her.
It was during the first week of the involuntary cruise of the Adamant that the Syndicate finished its preparations for what it hoped would be the decisive movement of its campaign. To do this a repeller and six crabs, all with extraordinary powers, had been fitted out with great care, and also with great rapidity, for the British Government was working night and day to get its fleet of ironclads in readiness for a descent upon the American coast. Many of the British vessels were already well prepared for ordinary naval warfare; but to resist crabs additional defences were necessary. It was known that the Adamant had been captured, and consequently the manufacture of stern-jackets had been abandoned; but it was believed that protection could be effectually given to rudders and propeller-blades by a new method which the Admiralty had adopted.
The repeller which was to take part in the Syndicate's proposed movement had been a vessel of the United States navy which for a long time had been out of commission, and undergoing a course of very slow and desultory repairs in a dockyard. She had always been considered the most unlucky craft in the service, and nearly every accident that could happen to a ship had happened to her. Years and years before, when she would set out upon a cruise, her officers and crew would receive the humorous sympathy of their friends, and wagers were frequently laid in regard to the different kinds of mishaps which might befall this unlucky vessel, which was then known as the Tallapoosa.
The Syndicate did not particularly desire this vessel, but there was no other that could readily be made available for its purposes, and accordingly the Tallapoosa was purchased from the Government and work immediately begun upon her. Her engines and hull were put into good condition, and outside of her was built another hull, composed of heavy steel armour-plates, and strongly braced by great transverse beams running through the ship.
Still outside of this was placed an improved system of spring armour, much stronger and more effective than any which had yet been constructed. This, with the armour-plate, added nearly fifteen feet to the width of the vessel above water. All her superstructures were removed from her deck, which was covered by a curved steel roof, and under a bomb-proof canopy at the bow were placed two guns capable of carrying the largest-sized motor-bombs. The Tallapoosa, thus transformed, was called Repeller No. 11.