It is time now to give some description of the evolution of that terrible instrument of destruction, the Submarine Mine, under which head may be included both those that are placed below water and those that float or drift at the surface. The utilization of explosives for the attack of shipping has been attempted by belligerents for centuries, but I am not aware that they have ever been employed against peaceful traders and fishermen before the Great War. The Germans may attempt to excuse themselves by alleging that some merchantmen carry guns for defence; but that has been the universal practice for centuries, and no merchantmen were more heavily armed than the old trading-ships of the Hansa League. Such ships were entirely different from the privateers, provided with Letters of Marque which entitled them to attack and capture enemy vessels if they could. On principles of self-defence, merchantmen were always entitled to beat off an attack if they could, and such action exposed other merchantmen to no reprisals. It is only of late years, when civilization was supposed to be so far advanced as to render the sinking of merchantmen "on their lawful occasions" an impossibility, that they ceased to carry guns.
Probably the first inventor of a floating mine—in the shape of an explosion-ship, as distinguished from a fire-ship—was an Italian engineer, who in contemporary accounts is variously referred to as "Gianibelli", "Gedevilo", "Genebelli", "Gienily", "Jenabel", and "Innibel", who, by means of a couple of small vessels filled with powder, which was built over with tons of bricks, gravestones, millstones, and "everything heavy, hooked, and sharp which 'this wicked witty man thought most damageable'", blew to absolute "smithereens" the great bridge which the Duke of Parma had built across the Scheldt in order to complete the blockade of Antwerp in 1585. It is rather interesting to note in passing that Gianibelli seems to have spent some time in this country. He had a good deal to do with the building of Tilbury Fort, and brought forward extended proposals for the reopening of Rye Harbour, which had become silted up. This he does not seem to have effected satisfactorily, and payment of £821, 9s., which he demanded of the Mayor and jurats of that famous town, was refused. He may have had something to do with the preparation of the fire-ships sent against the Spanish Armada in Calais Roads. At any rate the Spaniards on board thought so, for they, considering them "to be of those kind of dreadful Powder-Ships, which that famous Enginier Frederick Innibel had devised not long before in the River of Skeld", cried "the Fire Antwerp", cut their cables, and put to sea in the confusion that proved their ruin.
Submarine Mine laid by the Russians in the Crimean War
Made of staves about 3 in. thick, and containing an inner case filled with flue gunpowder.
We have already mentioned the attempts made by the British at La Rochelle with floating mines and devices of that kind, and, coming to the time of William III, we find "Honest Benbow" employing an explosion-ship, evidently modelled on those of Gianibelli, against the town of St. Malo. It did a lot of damage and unroofed a great number of houses, but effected nothing of any military value. One Meesters, a Dutchman, was the leading spirit in this kind of warfare. Whether he was any connection of Van Drebbel and Dr. Kuffler I cannot say, but he induced the Government to use his explosion-ships, or "machines" as they were termed, probably with the view of emulating these two nautical Guy Fawkeses who had succeeded in getting good incomes and considerable sums of money out of the British Government for their ideas and inventions, although, as far as can be ascertained, none of them had proved of the slightest value or efficiency. Explosion-ships or machines became for a time recognized units in the British navy, and were employed against Dunkirk, Dieppe, and various French ports without much effect. "At the former, the machine-ships, as they are called, did nothing but blow up themselves, and the credit of their inventor, as some say; but he being come hither, complains he was not seconded with ships as he ought to have been."[53] Very possibly he was not, for this class of warfare did not meet with much appreciation in the Royal Navy. On the other hand, the naval commanders complained that Mr. Meesters "had not his machine-ships in readiness when they had a fair opportunity of wind and weather to attack the forts at Dunkirk, and that he had trifled all the time and put the Government to great expense only to enrich himself, when the whole matter was impracticable". It is not surprising, therefore, that we hear no more of explosion-ships for a very long time.[54] The attempts made against the British ships by the Americans, and those we ourselves carried out with indifferent success against the French Invasion flotillas, have been already referred to. Though this form of attack was not again employed by the navy for many years, the following description in Müller's Elements of the Science of War (1811) shows that something like a floating mine was used in armies for the destruction of bridges. It consisted of a chest fitted with a rudder and filled with powder, and fired by means of two gun-locks, which were set in action by a stick protruding from the water and attached to their triggers.
Russian Mine laid in the Baltic in the Crimean War
A B, Close-fitting copper cases containing powder. C, Leather tube containing electric wire. D, Mooring weight. E, Small white wooden ball showing position of mine. F, Openings to load mine. G, Iron framework supporting mine. K, Iron ring-part of frame. L, Mooring rope.
In 1844 some attention was attracted to an alleged invention of a Captain Warner for blowing up ships. The John of Gaunt, a sailing-ship, was taken in tow by a steamer and blown up off Brighton in the presence of an immense crowd of spectators; but as the inventor wanted the Admiralty to pay him £400,000 for it before he showed them what it was like, his secret naturally remained a secret. It would seem to have been merely a mine floating just beneath the surface of the water, with some arrangement to explode it on contact. The Crimean War gave us some little experience of underwater mines, for several were employed by the Russians in the Baltic and the Black Sea. They were feeble affairs, and did no damage worth mentioning. One was fished up and exploded on board one of our ships, but no one was seriously hurt. Some were made of copper, others of wood fastened together like the staves of a barrel. But the rumour of these mines, which were stated to contain 700 pounds of powder and to explode either on contact or by what was then called a "galvanic current"—that is to say, electricity—caused the allied French and British fleets in the Baltic to exercise great care in their movements. As at the present day, a system of trawling for them was instituted, and no less than fifty were picked up off Cronstadt in ten days.