At the time when Cook started on his voyage England had for several years been engaged in, and was almost constantly at, naval war. From the French and Spanish prizes we got many valuable hints in the designing of ships, and our builders improved upon them with the best workmanship and materials in the world, so that the warships of Cook's time differed little from, and in many cases were, the hulks which, until very recent years, lay in our naval seaports. It ought not to be necessary to remind readers that Nelson's _Victory_, still afloat in Portsmouth harbour, was launched in 1765. [Illustration: CAPTAIN JAMES COOK, R.N. From picture in the National Portrait Gallery, painted by John Webber, K.A. _To face p._ 48.] The sailors were for the most part pressed men, but there was a notable difference between them and the seamen of Dampier's time. They were, and remained for long after, wild, improvident, overgrown children such as the nautical novelists who wrote a few years later [Sidenote: 1769] have pictured them; but the lawless rascals who manned king's ships or were pirates by turns, as fortune provided, were rapidly dying out, and veterans of the Spanish main were mostly to be found spending the evening of their days spinning yarns of treasure islands to the yokels of the village alehouse. One of the causes which led to this improvement in the class of seamen was the disgraceful behaviour of the crew of the _Wager_, a ship of Anson's squadron, when she was lost off the Horn in 1740. A good deal of the trouble was owing to the then state of the law, by which the pay of and control over a ship's company ceased upon her wreck. The law was so amended as to enlist seamen until regularly discharged from the service by the captain of the ship under the orders of the Admiralty. The food of sailors and the accommodation provided for them were little, if any, better than these things had been fifty years before--for the matter of that than they remained for fifty years later, and to the shame of those responsible, than the food still is in many merchant ships, for even now occasionally we hear of cases of scurvy on shipboard--a disease which Cook, over 120 years ago, avoided, though voyaging in such a manner as nowadays is unknown. But the most important change that had come to the sea service was in the methods of finding a ship's position at sea. Hadley's sextant was in use in 1731, Harrison's chronometer in 1762, and five years later the first number of the _Nautical Almanac_ was published, so that when Cook sailed longitude was no longer found by rule of thumb, and the great navigator, more than any other man, was able to and did, prove the value of these discoveries.