The United States was, therefore, at the beginning of the twentieth century, fairly launched on a policy of submarine boat construction, and other governments rapidly followed suit. France had, in the meantime, brought out two new boats, the Morse, 1898, and the Narval, after the designs of M. Lauboeuf, launched October 26, 1899. The Gustave Zédé had also been modified by adding hydroplanes so that she became controllable submerged.

The Morse was one hundred and eighteen feet long by eight feet three inches beam, with a displacement of one hundred and thirty-six tons, of about the same type as the Gustave Zédé. The Narval was one hundred and eleven feet six inches in length by twelve feet four inches beam; one hundred and six tons surface displacement and one hundred and sixty-eight tons submerged. She was, like the author's 1893 design, a double hull vessel controlled by hydroplanes. She was fitted with "Dzrewiecke" apparatus for carrying and discharging torpedoes, two of which were carried on either side. The Narval was a successful type and appears to have been the first French naval vessel to adopt a ship-shape outer hull of lighter plating. She was also, so far as my records show, the first French boat to be fitted with two motive powers—viz., steam for surface work and electricity for submerged work. To distinguish her in these particulars from the purely electric boats of cigar-shaped form, like the Gustave Zédé and Morse, Mr. Lauboeuf called her a submersible.

Very little was known about the French boats at this time (1900), as their method of construction and experiments were kept secret, but enough information leaked out as to their reported success to cause the British public much uneasiness, and they began to demand that their Admiralty should also take up the development of the submarine. No one had, so far, evolved a satisfactory type in England, so when the fact became known that the United States Congress had made an appropriation for five Holland boats, the British public became still more insistent that they should also have submarines.

About this time, so I was informed by Sir William White, who was then chief constructor of the British Navy, Lord Rothschild brought to him Mr. Isaac L. Rice, president of the Electric Boat Company, who controlled the Holland patents and who offered to build duplicates of the United States boats for England. Sir William thought this gave the Admiralty the opportunity to satisfy the public demands and to meet the French, their hereditary enemy—this was before the establishment of the "Entente Cordiale"—in their development of the submarine. Consequently an arrangement was made for the manufacture of this type of vessel for England by the Vickers Company. An agreement was drawn, so Sir William informed me, giving "Vickers" an exclusive monopoly of building submarines for the British Navy for a period of ten years, the consideration being that they should have available for the use of the British Admiralty all the details of the development work of the Electric Boat Company in America. This, plus their own experience and development work in England, which should be kept secret, should enable England to keep on an equal footing with France.

Sir William informed me that he thought this had been a mistake in policy, as it had deprived the government of the opportunity to secure improvements that had been developed by other inventors and builders who had made greater progress on independent lines.

England, therefore, started to build her first submarine, known as the "A" type. These were practically duplicates of the United States Adder and Moccasin type, now also designated as "A's" Nos. 1 to 7. England has been particularly unfortunate with this class of submarine, several of them having plunged to the bottom with the loss of their crews during peace-time manœuvres.

Modern French Submarine of Lauboeuf Design. Constructed by Schneider and Company